Aluminium alloy








Welded aluminium alloy bicycle frame, made in the 1990s.


Aluminium alloys (or aluminum alloys; see spelling differences) are alloys in which aluminium (Al) is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon, tin and zinc. There are two principal classifications, namely casting alloys and wrought alloys, both of which are further subdivided into the categories heat-treatable and non-heat-treatable. About 85% of aluminium is used for wrought products, for example rolled plate, foils and extrusions. Cast aluminium alloys yield cost-effective products due to the low melting point, although they generally have lower tensile strengths than wrought alloys. The most important cast aluminium alloy system is Al–Si, where the high levels of silicon (4.0–13%) contribute to give good casting characteristics. Aluminium alloys are widely used in engineering structures and components where light weight or corrosion resistance is required.[1]


Alloys composed mostly of aluminium have been very important in aerospace manufacturing since the introduction of metal-skinned aircraft. Aluminium-magnesium alloys are both lighter than other aluminium alloys and much less flammable than alloys that contain a very high percentage of magnesium.[2]


Aluminium alloy surfaces will develop a white, protective layer of aluminium oxide if left unprotected by anodizing and/or correct painting procedures. In a wet environment, galvanic corrosion can occur when an aluminium alloy is placed in electrical contact with other metals with more positive corrosion potentials than aluminium, and an electrolyte is present that allows ion exchange. Referred to as dissimilar-metal corrosion, this process can occur as exfoliation or as intergranular corrosion. Aluminium alloys can be improperly heat treated. This causes internal element separation, and the metal then corrodes from the inside out.[citation needed]


Aluminium alloy compositions are registered with The Aluminum Association. Many organizations publish more specific standards for the manufacture of aluminium alloy, including the Society of Automotive Engineers standards organization, specifically its aerospace standards subgroups,[3] and ASTM International.




Contents






  • 1 Engineering use and aluminum alloys properties


    • 1.1 Aluminium alloys versus types of steel


    • 1.2 Heat sensitivity considerations


    • 1.3 Household wiring




  • 2 Alloy designations


    • 2.1 Temper designation


    • 2.2 Wrought alloys


      • 2.2.1 1000 series


      • 2.2.2 2000 series


      • 2.2.3 3000 series


      • 2.2.4 4000 series


      • 2.2.5 5000 series


      • 2.2.6 6000 series


      • 2.2.7 7000 series


      • 2.2.8 8000 series


      • 2.2.9 Mixed list




    • 2.3 Cast alloys


    • 2.4 Named alloys




  • 3 Applications


    • 3.1 Aerospace alloys


      • 3.1.1 Aluminium–Scandium


      • 3.1.2 List of aerospace aluminium alloys




    • 3.2 Marine alloys


    • 3.3 Cycling alloys


    • 3.4 Automotive alloys


    • 3.5 Air and gas cylinders




  • 4 See also


  • 5 References


  • 6 External links





Engineering use and aluminum alloys properties




Aluminium alloy bicycle wheel. 1960s Bootie Folding Cycle


Aluminium alloys with a wide range of properties are used in engineering structures. Alloy systems are classified by a number system (ANSI) or by names indicating their main alloying constituents (DIN and ISO). Selecting the right alloy for a given application entails considerations of its tensile strength, density, ductility, formability, workability, weldability, and corrosion resistance, to name a few. A brief historical overview of alloys and manufacturing technologies is given in Ref.[4] Aluminium alloys are used extensively in aircraft due to their high strength-to-weight ratio. On the other hand, pure aluminium metal is much too soft for such uses, and it does not have the high tensile strength that is needed for airplanes and helicopters.



Aluminium alloys versus types of steel


Aluminium alloys typically have an elastic modulus of about 70 GPa, which is about one-third of the elastic modulus of most kinds of steel and steel alloys. Therefore, for a given load, a component or unit made of an aluminium alloy will experience a greater deformation in the elastic regime than a steel part of identical size and shape. Though there are aluminium alloys with somewhat-higher tensile strengths than the commonly used kinds of steel, simply replacing a steel part with an aluminium alloy might lead to problems.


With completely new metal products, the design choices are often governed by the choice of manufacturing technology. Extrusions are particularly important in this regard, owing to the ease with which aluminium alloys, particularly the Al–Mg–Si series, can be extruded to form complex profiles.


In general, stiffer and lighter designs can be achieved with Aluminium alloy than is feasible with steels. For instance, consider the bending of a thin-walled tube: the second moment of area is inversely related to the stress in the tube wall, i.e. stresses are lower for larger values. The second moment of area is proportional to the cube of the radius times the wall thickness, thus increasing the radius (and weight) by 26% will lead to a halving of the wall stress. For this reason, bicycle frames made of aluminium alloys make use of larger tube diameters than steel or titanium in order to yield the desired stiffness and strength. In automotive engineering, cars made of aluminium alloys employ space frames made of extruded profiles to ensure rigidity. This represents a radical change from the common approach for current steel car design, which depend on the body shells for stiffness, known as unibody design.


Aluminium alloys are widely used in automotive engines, particularly in cylinder blocks and crankcases due to the weight savings that are possible. Since aluminium alloys are susceptible to warping at elevated temperatures, the cooling system of such engines is critical. Manufacturing techniques and metallurgical advancements have also been instrumental for the successful application in automotive engines. In the 1960s, the aluminium cylinder heads of the Corvair earned a reputation for failure and stripping of threads, which is not seen in current aluminium cylinder heads.


An important structural limitation of aluminium alloys is their lower fatigue strength compared to steel. In controlled laboratory conditions, steels display a fatigue limit, which is the stress amplitude below which no failures occur – the metal does not continue to weaken with extended stress cycles. Aluminium alloys do not have this lower fatigue limit and will continue to weaken with continued stress cycles. Aluminium alloys are therefore sparsely used in parts that require high fatigue strength in the high cycle regime (more than 107 stress cycles).



Heat sensitivity considerations


Often, the metal's sensitivity to heat must also be considered. Even a relatively routine workshop procedure involving heating is complicated by the fact that aluminium, unlike steel, will melt without first glowing red. Forming operations where a blow torch is used can reverse or remove heat treating, therefore is not advised whatsoever. No visual signs reveal how the material is internally damaged. Much like welding heat treated, high strength link chain, all strength is now lost by heat of the torch. The chain is dangerous and must be discarded.


Aluminium is subject to internal stresses and strains. Sometimes years later, as is the tendency of improperly welded aluminium bicycle frames to gradually twist out of alignment from the stresses of the welding process. Thus, the aerospace industry avoids heat altogether by joining parts with rivets of like metal composition, other fasteners, or adhesives.


Stresses in overheated aluminium can be relieved by heat-treating the parts in an oven and gradually cooling it—in effect annealing the stresses. Yet these parts may still become distorted, so that heat-treating of welded bicycle frames, for instance, can result in a significant fraction becoming misaligned. If the misalignment is not too severe, the cooled parts may be bent into alignment. Of course, if the frame is properly designed for rigidity (see above), that bending will require enormous force.


Aluminium's intolerance to high temperatures has not precluded its use in rocketry; even for use in constructing combustion chambers where gases can reach 3500 K. The Agena upper stage engine used a regeneratively cooled aluminium design for some parts of the nozzle, including the thermally critical throat region; in fact the extremely high thermal conductivity of aluminium prevented the throat from reaching the melting point even under massive heat flux, resulting in a reliable, lightweight component.



Household wiring



Because of its high conductivity and relatively low price compared with copper in the 1960s, aluminium was introduced at that time for household electrical wiring in North America, even though many fixtures had not been designed to accept aluminium wire. But the new use brought some problems:



  • The greater coefficient of thermal expansion of aluminium causes the wire to expand and contract relative to the dissimilar metal screw connection, eventually loosening the connection.

  • Pure aluminium has a tendency to creep under steady sustained pressure (to a greater degree as the temperature rises), again loosening the connection.


  • Galvanic corrosion from the dissimilar metals increases the electrical resistance of the connection.


All of this resulted in overheated and loose connections, and this in turn resulted in some fires. Builders then became wary of using the wire, and many jurisdictions outlawed its use in very small sizes, in new construction. Yet newer fixtures eventually were introduced with connections designed to avoid loosening and overheating. At first they were marked "Al/Cu", but they now bear a "CO/ALR" coding.


Another way to forestall the heating problem is to crimp the aluminium wire to a short "pigtail" of copper wire. A properly done high-pressure crimp by the proper tool is tight enough to reduce any thermal expansion of the aluminium. Today, new alloys, designs, and methods are used for aluminium wiring in combination with aluminium terminations.



Alloy designations


Wrought and cast aluminium alloys use different identification systems. Wrought aluminium is identified with a four digit number which identifies the alloying elements.


Cast aluminium alloys use a four to five digit number with a decimal point. The digit in the hundreds place indicates the alloying elements, while the digit after the decimal point indicates the form (cast shape or ingot).



Temper designation


The temper designation follows the cast or wrought designation number with a dash, a letter, and potentially a one to three digit number, e.g. 6061-T6. The definitions for the tempers are:[5][6]



-F 

As fabricated

-H 

Strain hardened (cold worked) with or without thermal treatment

-H1 

Strain hardened without thermal treatment

-H2 

Strain hardened and partially annealed

-H3 

Strain hardened and stabilized by low temperature heating

Second digit 

A second digit denotes the degree of hardness

-HX2 = 1/4 hard

-HX4 = 1/2 hard

-HX6 = 3/4 hard

-HX8 = full hard

-HX9 = extra hard







-O 

Full soft (annealed)

-T 

Heat treated to produce stable tempers

-T1 

Cooled from hot working and naturally aged (at room temperature)

-T2 

Cooled from hot working, cold-worked, and naturally aged

-T3 

Solution heat treated and cold worked

-T4 

Solution heat treated and naturally aged

-T5 

Cooled from hot working and artificially aged (at elevated temperature)

-T51 

Stress relieved by stretching

-T510 

No further straightening after stretching

-T511 

Minor straightening after stretching





-T52 

Stress relieved by thermal treatment





-T6 

Solution heat treated and artificially aged

-T7 

Solution heat treated and stabilized

-T8 

Solution heat treated, cold worked, and artificially aged

-T9 

Solution heat treated, artificially aged, and cold worked

-T10 

Cooled from hot working, cold-worked, and artificially aged





-W 

Solution heat treated only


Note: -W is a relatively soft intermediary designation that applies after heat treat and before aging is completed. The -W condition can be extended at extremely low temperatures but not indefinitely and depending on the material will typically last no longer than 15 minutes at ambient temperatures.



Wrought alloys


The International Alloy Designation System is the most widely accepted naming scheme for wrought alloys. Each alloy is given a four-digit number, where the first digit indicates the major alloying elements, the second — if different from 0 — indicates a variation of the alloy, and the third and fourth digits identify the specific alloy in the series. For example, in alloy 3105, the number 3 indicates the alloy is in the manganese series, 1 indicates the first modification of alloy 3005, and finally 05 identifies it in the 3000 series.[7]



  • 1000 series are essentially pure aluminium with a minimum 99% aluminium content by weight and can be work hardened.

  • 2000 series are alloyed with copper, can be precipitation hardened to strengths comparable to steel. Formerly referred to as duralumin, they were once the most common aerospace alloys, but were susceptible to stress corrosion cracking and are increasingly replaced by 7000 series in new designs.

  • 3000 series are alloyed with manganese, and can be work hardened.

  • 4000 series are alloyed with silicon. Variations of aluminium-silicon alloys intended for casting (and therefore not included in 4000 series) are also known as silumin.

  • 5000 series are alloyed with magnesium, and offer superb corrosion resistance, making them suitable for marine applications. Also, 5083 alloy has the highest strength of not heat-treated alloys. Most 5000 series alloys include manganese as well.

  • 6000 series are alloyed with magnesium and silicon. They are easy to machine, are weldable, and can be precipitation hardened, but not to the high strengths that 2000 and 7000 can reach. 6061 alloy is one of the most commonly used general-purpose aluminium alloys.

  • 7000 series are alloyed with zinc, and can be precipitation hardened to the highest strengths of any aluminium alloy (ultimate tensile strength up to 700 MPa for the 7068 alloy). Most 7000 series alloys include magnesium and copper as well.

  • 8000 series are alloyed with other elements which are not covered by other series. Aluminium-lithium alloys are an example [8]



1000 series








































































1000 series aluminium alloy nominal composition (% weight) and applications
Alloy Al contents Alloying elements Uses and refs
1050 99.5 - Drawn tube, chemical equipment
1060 99.6 - Universal
1070 99.7 - Thick-wall drawn tube
1100 99.0
Cu 0.1
Universal, holloware
1145 99.45 - Sheet, plate, foil
1199 99.99 - Foil[9]
1350 99.5 - Electrical conductors
1370 99.7 - Electrical conductors

1420#
92.9
Mg 5.0; Li 2.0; Zr 0.1
Aerospace

1421#
92.9
Mg 5.0; Li 2.0; Mn 0.2; Sc 0.2; Zr 0.1
Aerospace[10]

# Not an International Alloy Designation System name



2000 series








































































































































































2000 series aluminium alloy nominal composition (% weight) and applications
Alloy Al contents Alloying elements Uses and refs
2004 93.6
Cu 6.0; Zr 0.4
Aerospace
2011 93.7
Cu 5.5; Bi 0.4; Pb 0.4
Universal
2014 93.5
Cu 4.4; Si 0.8; Mn 0.8; Mg 0.5
Universal
2017 94.2
Cu 4.0; Si 0.5; Mn 0.7; Mg 0.6
Aerospace
2020 93.4
Cu 4.5; Li 1.3; Mn 0.55; Cd 0.25
Aerospace
2024 93.5
Cu 4.4; Mn 0.6; Mg 1.5
Universal, aerospace[11]
2029 94.6
Cu 3.6; Mn 0.3; Mg 1.0; Ag 0.4; Zr 0.1
Alclad sheet, aerospace[12]
2036 96.7
Cu 2.6; Mn 0.25; Mg 0.45
Sheet
2048 94.8
Cu 3.3; Mn 0.4; Mg 1.5
Sheet, plate
2055 93.5
Cu 3.7; Zn 0.5; Li 1.1; Ag 0.4;Mn 0.2; Mg 0.3; Zr 0.1
Aerospace extrusions,[13]
2080 94.0
Mg 3.7; Zn 1.85; Cr 0.2; Li 0.2
Aerospace
2090 95.0
Cu 2.7; Li 2.2; Zr 0.12
Aerospace
2091 94.3
Cu 2.1; Li 2.0; Mg 1.5; Zr 0.1
Aerospace, cryogenics
2095 93.6
Cu 4.2; Li 1.3; Mg 0.4; Ag 0.4; Zr 0.1
Aerospace
2099 94.3
Cu 2.53; Mn 0.3; Mg 0.25; Li 1.75; Zn 0.75; Zr 0.09
Aerospace[14]
2124 93.5
Cu 4.4; Mn 0.6; Mg 1.5
Plate
2195 93.5
Cu 4.0; Mn 0.5; Mg 0.45; Li 1.0; Ag 0.4; Zr 0.12
aerospace,[15][16]Space Shuttle Super Lightweight external tank,[17] and the SpaceX Falcon 9[18] and Falcon 1e second stage launch vehicles.[19]
2196 Extrusion
2198 Sheet
2218 92.5
Cu 4.0; Mg 1.5;Ni 2
Forgings
2219 93.0
Cu 6.3; Mn 0.3;Ti 0.06; V 0.1; Zr 0.18
Universal, Space Shuttle Standard Weight external tank
2224&2324 93.8
Cu 4.1; Mn 0.6; Mg 1.5
Plate[11]
2319 93.0
Cu 6.3; Mn 0.3; Ti 0.15; V 0.1; Zr 0.18
Bar and wire
2519 93.0
Cu 5.8; Mg 0.2; Ti 0.15; V 0.1; Zr 0.2
Aerospace armor plate
2524 93.8
Cu 4.2; Mn 0.6; Mg 1.4
Plate, sheet[20]
2618 93.7
Cu 2.3; Si 0.18; Mg 1.6; Ti 0.07; Fe 1.1; Ni 1.0
Forgings


3000 series






















































3000 series aluminium alloy nominal composition (% weight) and applications
Alloy Al contents Alloying elements Uses and refs
3003 98.6
Mn 1.2; Cu 0.12
Universal, sheet, rigid foil containers, signs, decorative
3004 97.8
Mn 1.2; Mg 1
Universal, beverage cans[21]
3005 98.5
Mn 1.0; Mg 0.5
Work-hardened
3102 99.8
Mn 0.2
Work-hardened[22]
3103&3303 98.8
Mn 1.2
Work-hardened
3105 97.8
Mn 0.55; Mg 0.5
Sheet
3203 98.8
Mn 1.2
Sheet, high strength foil


4000 series






















































4000 series aluminium alloy nominal composition (% weight) and applications
Alloy Al contents Alloying elements Uses and refs
4006 98.3
Si 1.0; Fe 0.65
Work-hardened or aged
4007 96.3
Si 1.4; Mn 1.2; Fe 0.7; Ni 0.3; Cr 0.1
Work-hardened
4015 96.8
Si 2.0; Mn 1.0; Mg 0.2
Work-hardened
4032 85
Si 12.2; Cu 0.9; Mg 1; Ni 0.9;
Forgings
4043 94.8
Si 5.2
Rod
4047 85.5
Si 6.0; Fe 0.8; Cu 0.3; Zn 0.2; Mn 0.15; Mg 0.1
Sheet, cladding, fillers
4543 93.7
Si 6.0; Mg 0.3
architectural extrusions


5000 series




































































































































5000 series aluminium alloy nominal composition (% weight) and applications
Alloy Al contents Alloying elements Uses and refs
5005 & 5657 99.2
Mg 0.8
Sheet, plate, rod, cubesats
5010 99.3
Mg 0.5; Mn 0.2;

5019 94.7
Mg 5.0; Mn 0.25;

5024 94.5
Mg 4.6; Mn 0.6; Zr 0.1; Sc 0.2
Extrusions, aerospace[23]
5026 93.9
Mg 4.5; Mn 1; Si 0.9; Fe 0.4; Cu 0.3

5050 98.6
Mg 1.4
Universal
5052 & 5652 97.2
Mg 2.5; Cr 0.25
Universal, aerospace (cubesats), marine
5056 94.8
Mg 5.0; Mn 0.12; Cr 0.12
Foil, rod, rivets
5059 93.5
Mg 5.0; Mn 0.8; Zn 0.6; Zr 0.12
rocket cryogenic tanks
5083 94.8
Mg 4.4; Mn 0.7; Cr 0.15
Universal, welding, marine
5086 95.4
Mg 4.0; Mn 0.4; Cr 0.15
Universal, welding, marine
5154 & 5254 96.2
Mg 3.5; Cr 0.25;
Universal, rivets[24]
5182 95.2
Mg 4.5; Mn 0.35;
Sheet
5252 97.5
Mg 2.5;
Sheet
5356 94.6
Mg 5.0; Mn 0.12; Cr 0.12; Ti 0.13
Rod, MIG wire
5454 96.4
Mg 2.7; Mn 0.8; Cr 0.12
Universal
5456 94
Mg 5.1; Mn 0.8; Cr 0.12
Universal
5457 98.7
Mg 1.0; Mn 0.2; Cu 0.1
Sheet, automobile trim[25]
5557 99.1
Mg 0.6; Mn 0.2; Cu 0.1
Sheet, automobile trim[26]
5754 95.8
Mg 3.1; Mn 0.5; Cr 0.3
Sheet, Rod


6000 series


































































































































































6000 series aluminium alloy nominal composition (% weight) and applications
Alloy Al contents Alloying elements Uses and refs
6005 98.7
Si 0.8; Mg 0.5
Extrusions, angles
6009 97.7
Si 0.8; Mg 0.6; Mn 0.5; Cu 0.35
Sheet
6010 97.3
Si 1.0; Mg 0.7; Mn 0.5; Cu 0.35
Sheet
6013 97.05
Si 0.8; Mg 1.0; Mn 0.35; Cu 0.8
Plate, aerospace, smartphone cases[27][28]
6022 97.9
Si 1.1; Mg 0.6; Mn 0.05; Cu 0.05; Fe 0.3
Sheet, automotive[29]
6060 98.9
Si 0.4; Mg 0.5; Fe 0.2
Heat-treatable
6061 97.9
Si 0.6; Mg 1.0; Cu 0.25; Cr 0.2
Universal, structural, aerospace (cubesats)[30]

6063 & 6463
98.9
Si 0.4; Mg 0.7
Universal, marine, decorative
6063A 98.7
Si 0.4; Mg 0.7; Fe 0.2
Heat-treatable
6065 97.1
Si 0.6; Mg 1.0; Cu 0.25; Bi 1.0
Heat-treatable
6066 95.7
Si 1.4; Mg 1.1; Mn 0.8; Cu 1.0
Universal
6070 96.8
Si 1.4; Mg 0.8; Mn 0.7; Cu 0.28
Extrusions
6081 98.1
Si 0.9; Mg 0.8; Mn 0.2
Heat-treatable
6082 97.5
Si 1.0; Mg 0.85; Mn 0.65
Heat-treatable
6101 98.9
Si 0.5; Mg 0.6
Extrusions
6105 98.6
Si 0.8; Mg 0.65
Heat-treatable
6113 96.8
Si 0.8; Mg 1.0; Mn 0.35; Cu 0.8; O 0.2
Aerospace
6151 98.2
Si 0.9; Mg 0.6; Cr 0.25
Forgings
6162 98.6
Si 0.55; Mg 0.9
Heat-treatable
6201 98.5
Si 0.7; Mg 0.8
Rod
6205 98.4
Si 0.8; Mg 0.5;Mn 0.1; Cr 0.1; Zr 0.1
Extrusions
6262 96.8
Si 0.6; Mg 1.0; Cu 0.25; Cr 0.1; Bi 0.6; Pb 0.6
Universal
6351 97.8
Si 1.0; Mg 0.6;Mn 0.6
Extrusions
6463 98.9
Si 0.4; Mg 0.7
Extrusions
6951 97.2
Si 0.5; Fe 0.8; Cu 0.3; Mg 0.7; Mn 0.1; Zn 0.2
Heat-treatable


7000 series










































































































































7000 series aluminium alloy nominal composition (% weight) and applications
Alloy Al contents Alloying elements Uses and refs
7005 93.3
Zn 4.5; Mg 1.4; Mn 0.45; Cr 0.13; Zr 0.14; Ti 0.04
Extrusions
7010 93.3
Zn 6.2; Mg 2.35; Cu 1.7; Zr 0.1;
Aerospace

7022
(variable)
Fe 0.5max; Si 0.5max; Zn 4.3–5.2; Mg 2.6–3.7; Mn 0.1–0.4; Cu 0.5–1.0; Cr 0.1–0.3; Zr 0.2max; Ti 0.2max
(experimental)[31]
7034 85.7
Zn 11.0; Mg 2.3; Cu 1.0
Ultimate tensile strength 750 MPa[32]
7039 92.3
Zn 4.0; Mg 3.3; Mn 0.2; Cr 0.2
Aerospace armor plate
7049 88.1
Zn 7.7; Mg 2.45; Cu 1.6; Cr 0.15
Universal, aerospace
7050 89.0
Zn 6.2; Mg 2.3; Cu 2.3; Zr 0.1
Universal, aerospace
7055 87.2
Zn 8.0; Mg 2.3; Cu 2.3; Zr 0.1
Plate, extrusions, aerospace[33]
7065 88.5
Zn 7.7; Mg 1.6; Cu 2.1; Zr 0.1
Plate, aerospace[34]
7068 87.6
Zn 7.8; Mg 2.5; Cu 2.0; Zr 0.12
Aerospace, Ultimate tensile strength 710 MPa
7072 99.0
Zn 1.0
Sheet, foil
7075 & 7175 90.0
Zn 5.6; Mg 2.5; Cu 1.6; Cr 0.23
Universal, aerospace (cubesats), forgings
7079 91.4
Zn 4.3; Mg 3.3; Cu 0.6; Mn 0.2; Cr 0.15
-
7085 89.4
Zn 7.5; Mg 1.5; Cu 1.6
Thick plate, aerospace[35]
7093 86.7
Zn 9.0; Mg 2.5; Cu 1.5; O 0.2; Zr 0.1
Aerospace
7116 93.7
Zn 4.5; Mg 1; Cu 0.8
Heat-treatable
7129 93.2
Zn 4.5; Mg 1.6; Cu 0.7
-
7150 89.05
Zn 6.4; Mg 2.35; Cu 2.2; O 0.2; Zr 0.1
Aerospace
7178 88.1
Zn 6.8; Mg 2.7; Cu 2.0; Cr 0.26
Universal, aerospace
7255 87.5
Zn 8.0; Mg 2.1; Cu 2.3; Zr 0.1
Plate, aerospace[36]
7475 90.3
Zn 5.7; Mg 2.3; Si 1.5; Cr 0.22
Universal, aerospace


8000 series




























































8000 series aluminium alloy nominal composition (% weight) and applications
Alloy Al content Alloying elements Uses and refs
8006 98.0
Fe 1.5; Mn 0.5;
Universal, weldable
8009 88.3
Fe 8.6; Si 1.8; V 1.3
High-temperature aerospace[37]
8011 98.7
Fe 0.7; Si 0.6
Work-hardened
8014 98.2
Fe 1.4; Mn 0.4;
universal[38]
8019 87.5
Fe 8.3; Ge 4.0; O 0.2
Aerospace
8030 99.3
Fe 0.5; Cu 0.2
wire[39]
8090 94.8
Li 2.45; Cu 1.3; Mg 0.95; Zr 0.12;
aerospace, cryogenics[40]
8176 99.3
Fe 0.6; Si 0.1
electrical wire[41]


Mixed list


































































































































































































































































































































































































































































































































































































































































































































































































































































































Wrought aluminium alloy composition limits (% weight)
Alloy

Si

Fe

Cu

Mn

Mg

Cr

Zn

V

Ti

Bi

Ga

Pb

Zr
Limits††
Al
Each Total

1050[42]
0.25 0.40 0.05 0.05 0.05 0.05 0.03 99.5 min
1060 0.25 0.35 0.05 0.028 0.03 0.03 0.05 0.05 0.028 0.03 0.03 0.03 0.03 0.028 99.6 min
1100 0.95 Si+Fe 0.05–0.20 0.05 0.10 0.05 0.15 99.0 min

1199[42]
0.006 0.006 0.006 0.002 0.006 0.006 0.005 0.002 0.005 0.002 99.99 min
2014 0.50–1.2 0.7 3.9–5.0 0.40–1.2 0.20–0.8 0.10 0.25 0.15 0.05 0.15 remainder
2024 0.50 0.50 3.8–4.9 0.30–0.9 1.2–1.8 0.10 0.25 0.15 0.05 0.15 remainder
2219 0.2 0.30 5.8–6.8 0.20–0.40 0.02 0.10 0.05–0.15 0.02–0.10 0.10–0.25 0.05 0.15 remainder
3003 0.6 0.7 0.05–0.20 1.0–1.5 0.10 0.05 0.15 remainder
3004 0.30 0.7 0.25 1.0–1.5 0.8–1.3 0.25 0.05 0.15 remainder
3102 0.40 0.7 0.10 0.05–0.40 0.30 0.10 0.05 0.15 remainder
4041 4.5–6.0 0.80 0.30 0.05 0.05 0.10 0.20 0.05 0.15 remainder
5005 0.3 0.7 0.2 0.2 0.5-1.1 0.1 0.25 0.05 0.15 remainder
5052 0.25 0.40 0.10 0.10 2.2–2.8 0.15–0.35 0.10 0.05 0.15 remainder
5083 0.40 0.40 0.10 0.40–1.0 4.0–4.9 0.05–0.25 0.25 0.15 0.05 0.15 remainder
5086 0.40 0.50 0.10 0.20–0.7 3.5–4.5 0.05–0.25 0.25 0.15 0.05 0.15 remainder
5154 0.25 0.40 0.10 0.10 3.10–3.90 0.15–0.35 0.20 0.20 0.05 0.15 remainder
5356 0.25 0.40 0.10 0.10 4.50–5.50 0.05–0.20 0.10 0.06–0.20 0.05 0.15 remainder
5454 0.25 0.40 0.10 0.50–1.0 2.4–3.0 0.05–0.20 0.25 0.20 0.05 0.15 remainder
5456 0.25 0.40 0.10 0.50–1.0 4.7–5.5 0.05–0.20 0.25 0.20 0.05 0.15 remainder
5754 0.40 0.40 0.10 0.50 2.6–3.6 0.30 0.20 0.15 0.05 0.15 remainder
6005 0.6–0.9 0.35 0.10 0.10 0.40–0.6 0.10 0.10 0.10 0.05 0.15 remainder

6005A
0.50–0.9 0.35 0.30 0.50 0.40–0.7 0.30 0.20 0.10 0.05 0.15 remainder
6060 0.30–0.6 0.10–0.30 0.10 0.10 0.35–0.6 0.05 0.15 0.10 0.05 0.15 remainder
6061 0.40–0.8 0.7 0.15–0.40 0.15 0.8–1.2 0.04–0.35 0.25 0.15 0.05 0.15 remainder
6063 0.20–0.6 0.35 0.10 0.10 0.45–0.9 0.10 0.10 0.10 0.05 0.15 remainder
6066 0.9–1.8 0.50 0.7–1.2 0.6–1.1 0.8–1.4 0.40 0.25 0.20 0.05 0.15 remainder
6070 1.0–1.7 0.50 0.15–0.40 0.40–1.0 0.50–1.2 0.10 0.25 0.15 0.05 0.15 remainder
6082 0.7–1.3 0.50 0.10 0.40–1.0 0.60–1.2 0.25 0.20 0.10 0.05 0.15 remainder
6105 0.6–1.0 0.35 0.10 0.10 0.45–0.8 0.10 0.10 0.10 0.05 0.15 remainder
6162 0.40–0.8 0.50 0.20 0.10 0.7–1.1 0.10 0.25 0.10 0.05 0.15 remainder
6262 0.40–0.8 0.7 0.15–0.40 0.15 0.8–1.2 0.04–0.14 0.25 0.15 0.40–0.7 0.40–0.7 0.05 0.15 remainder
6351 0.7–1.3 0.50 0.10 0.40–0.8 0.40–0.8 0.20 0.20 0.05 0.15 remainder
6463 0.20–0.6 0.15 0.20 0.05 0.45–0.9 0.05 0.05 0.15 remainder
7005 0.35 0.40 0.10 0.20–0.70 1.0–1.8 0.06–0.20 4.0–5.0 0.01–0.06 0.08–0.20 0.05 0.15 remainder
7022 0.50 0.50 0.50–1.00 0.10–0.40 2.60–3.70 0.10–0.30 4.30–5.20 0.20 0.05 0.15 remainder
7068 0.12 0.15 1.60–2.40 0.10 2.20–3.00 0.05 7.30–8.30 0.01 0.05–0.15 0.05 0.15 remainder
7072 0.7 Si+Fe 0.10 0.10 0.10 0.8–1.3 0.05 0.15 remainder
7075 0.40 0.50 1.2–2.0 0.30 2.1–2.9 0.18–0.28 5.1–6.1 0.20 0.05 0.15 remainder
7079 0.3 0.40 0.40–0.80 0.10–0.30 2.9–3.7 0.10–0.25 3.8–4.8 0.10 0.05 0.15 remainder
7116 0.15 0.30 0.50–1.1 0.05 0.8–1.4 4.2–5.2 0.05 0.05 0.03 0.05 0.15 remainder
7129 0.15 0.30 0.50–0.9 0.10 1.3–2.0 0.10 4.2–5.2 0.05 0.05 0.03 0.05 0.15 remainder
7178 0.40 0.50 1.6–2.4 0.30 2.4–3.1 0.18–0.28 6.3–7.3 0.20 0.05 0.15 remainder

8176[41]
0.03–0.15 0.40–1.0 0.10 0.03 0.05 0.15 remainder
Alloy

Si

Fe

Cu

Mn

Mg

Cr

Zn

V

Ti

Bi

Ga

Pb

Zr
Limits††
Al
Each Total

Manganese plus chromium must be between 0.12–0.50%.
††This limit applies to all elements for which no other limit is specified on a given row, because no column exists or because the column is blank.


Cast alloys


The Aluminum Association (AA) has adopted a nomenclature similar to that of wrought alloys. British Standard and DIN have different designations. In the AA system, the second two digits reveal the minimum percentage of aluminium, e.g. 150.x correspond to a minimum of 99.50% aluminium. The digit after the decimal point takes a value of 0 or 1, denoting casting and ingot respectively.[1] The main alloying elements in the AA system are as follows:[43]



  • 1xx.x series are minimum 99% aluminium

  • 2xx.x series copper

  • 3xx.x series manganese

  • 4xx.x series silicon

  • 5xx.x series magnesium

  • 6xx.x series magnesium and silicon

  • 7xx.x series zinc

  • 8xx.x other elements

  • 9xx.x Unused series














































































































































































































































































































































Minimum tensile requirements for cast aluminium alloys[44]
Alloy type Temper Tensile strength (min) in ksi (MPa) Yield strength (min) in ksi (MPa) Elongation in 2 in %
ANSI UNS
201.0 A02010 T7 60.0 (414) 50.0 (345) 3.0
204.0 A02040 T4 45.0 (310) 28.0 (193) 6.0
242.0 A02420 O 23.0 (159) N/A N/A
T61 32.0 (221) 20.0 (138) N/A
A242.0 A12420 T75 29.0 (200) N/A 1.0
295.0 A02950 T4 29.0 (200) 13.0 (90) 6.0
T6 32.0 (221) 20.0 (138) 3.0
T62 36.0 (248) 28.0 (193) N/A
T7 29.0 (200) 16.0 (110) 3.0
319.0 A03190 F 23.0 (159) 13.0 (90) 1.5
T5 25.0 (172) N/A N/A
T6 31.0 (214) 20.0 (138) 1.5
328.0 A03280 F 25.0 (172) 14.0 (97) 1.0
T6 34.0 (234) 21.0 (145) 1.0
355.0 A03550 T6 32.0 (221) 20.0 (138) 2.0
T51 25.0 (172) 18.0 (124) N/A
T71 30.0 (207) 22.0 (152) N/A
C355.0 A33550 T6 36.0 (248) 25.0 (172) 2.5
356.0 A03560 F 19.0 (131) 9.5 (66) 2.0
T6 30.0 (207) 20.0 (138) 3.0
T7 31.0 (214) N/A N/A
T51 23.0 (159) 16.0 (110) N/A
T71 25.0 (172) 18.0 (124) 3.0
A356.0 A13560 T6 34.0 (234) 24.0 (165) 3.5
T61 35.0 (241) 26.0 (179) 1.0
443.0 A04430 F 17.0 (117) 7.0 (48) 3.0
B443.0 A24430 F 17.0 (117) 6.0 (41) 3.0
512.0 A05120 F 17.0 (117) 10.0 (69) N/A
514.0 A05140 F 22.0 (152) 9.0 (62) 6.0
520.0 A05200 T4 42.0 (290) 22.0 (152) 12.0
535.0 A05350 F 35.0 (241) 18.0 (124) 9.0
705.0 A07050 T5 30.0 (207) 17.0 (117)
5.0
707.0 A07070 T7 37.0 (255) 30.0 (207)
1.0
710.0 A07100 T5 32.0 (221) 20.0 (138) 2.0
712.0 A07120 T5 34.0 (234) 25.0 (172)
4.0
713.0 A07130 T5 32.0 (221) 22.0 (152) 3.0
771.0 A07710 T5 42.0 (290) 38.0 (262) 1.5
T51 32.0 (221) 27.0 (186) 3.0
T52 36.0 (248) 30.0 (207) 1.5
T6 42.0 (290) 35.0 (241) 5.0
T71 48.0 (331) 45.0 (310) 5.0
850.0 A08500 T5 16.0 (110) N/A 5.0
851.0 A08510 T5 17.0 (117) N/A 3.0
852.0 A08520 T5 24.0 (165) 18.0 (124) N/A

Only when requested by the customer


Named alloys




  • Alferium an aluminium-iron alloy developed by Schneider, used for aircraft manufacture by Société pour la Construction d'Avions Métallique "Aviméta"


  • Alclad aluminium sheet formed from high-purity aluminium surface layers bonded to high strength aluminium alloy core material[45]


  • Birmabright (aluminium, magnesium) a product of The Birmetals Company, basically equivalent to 5251


  • Duralumin (copper, aluminium)


  • Hindalium (aluminium, magnesium, manganese, silicon) product of Hindustan Aluminium Corporation Ltd, made in 16ga rolled sheets for cookware


  • Pandalloy Pratt&Whitney proprietary alloy, supposedly having high strength and superior high temperature performance.

  • Magnalium


  • Magnox (magnesium, aluminium)


  • Silumin (aluminium, silicon)


  • Titanal (aluminium, zinc, magnesium, copper, zirconium) a product of Austria Metall AG. Commonly used in high performance sports products, particularly snowboards and skis.


  • Y alloy, Hiduminium, R.R. alloys: pre-war nickel-aluminium alloys, used in aerospace and engine pistons, for their ability to retain strength at elevated temperature. These are replaced nowadays by higher-performing iron-aluminium alloys like 8009 capable to operate with low creep up to 300C.



Applications



Aerospace alloys



Aluminium–Scandium




Parts of the Mig–29 are made from Al–Sc alloy.[46]


The addition of scandium to aluminium creates nanoscale Al3Sc precipitates which limit the excessive grain growth that occurs in the heat-affected zone of welded aluminium components. This has two beneficial effects: the precipitated Al3Sc forms smaller crystals than are formed in other aluminium alloys[46] and the width of precipitate-free zones that normally exist at the grain boundaries of age-hardenable aluminium alloys is reduced.[46] Scandium is also a potent grain refiner in cast aluminium alloys, and atom for atom, the most potent strengthener in aluminium, both as a result of grain refinement and precipitation strengthening.


An added benefit of scandium additions to aluminium is that the nanoscale Al3Sc precipitates that give the alloy its strength are coarsening resistant at relatively high temperatures (~350 °C). This is in contrast to typical commercial 2xxx and 6xxx alloys, which quickly lose their strength at temperatures above 250 °C due to rapid coarsening of their strengthening precipitates.[47]


The effect of Al3Sc precipitates also increase the alloy yield strength by 50–70 MPa (7.3–10.2 ksi).


In principle, aluminium alloys strengthened with additions of scandium are very similar to traditional nickel-base superalloys, in that both are strengthened by coherent, coarsening resistant precipitates with an ordered L12 structure. However, Al-Sc alloys contain a much lower volume fraction of precipitates and the inter-precipitate distance is much smaller than in their nickel-base counterparts. In both cases however, the coarsening resistant precipitates allow the alloys to retain their strength at high temperatures.[48]


The increased operating temperature of Al-Sc alloys has significant implications for energy efficient applications, particularly in the automotive industry. These alloys can provide a replacement for denser materials such as steel and titanium that are used in 250-350 °C environments, such as in or near engines. Replacement of these materials with lighter aluminium alloys leads to weight reductions which in turn leads to increased fuel efficiencies.[49]


Additions of erbium and zirconium have been shown to increase the coarsening resistance of Al-Sc alloys to ~400 °C. This is achieved by the formation of a slow-diffusing zirconium-rich shell around scandium and erbium-rich precipitate cores, forming strengthening precipitates with composition Al3(Sc,Zr,Er).[50] Additional improvements in the coarsening resistance will allow these alloys to be used at increasingly higher temperatures.


Titanium alloys, which are stronger but heavier than Al-Sc alloys, are still much more widely used.[51]


The main application of metallic scandium by weight is in aluminium-scandium alloys for minor aerospace industry components. These alloys contain between 0.1% and 0.5% (by weight) of scandium. They were used in the Russian military aircraft Mig 21 and Mig 29.[46]


Some items of sports equipment, which rely on high performance materials, have been made with scandium-aluminium alloys, including baseball bats,[52]lacrosse sticks, as well as bicycle[53] frames and components, and tent poles.
U.S. gunmaker Smith & Wesson produces revolvers with frames composed of scandium alloy and cylinders of titanium.
[54]



List of aerospace aluminium alloys


The following aluminium alloys are commonly used in aircraft and other aerospace structures:[55][56]



  • 1420


  • 2004; 2014; 2017; 2020; 2024; 2080; 2090; 2091; 2095; 2219; 2224; 2324; 2519; 2524

  • 4047


  • 6013; 6061; 6063; 6113; 6951;


  • 7010; 7049; 7050; 7055; 7068; 7075; 7079; 7093; 7150; 7178; 7475;


  • 8009;


Note that the term aircraft aluminium or aerospace aluminium usually refers to 7075.[57][58]


4047 alumunium is a unique alloy used in both the aerospace and automotive applications as a cladding alloy or filler material. As filler, aluminum alloy 4047 strips can be combined to intricate applications to bond two metals.[59]


6951 is a heat treatable alloy providing additional strength to the fins while increasing sag resistance; this allows the manufacturer to reduce the gauge of the sheet and therefore reducing the weight of the formed fin. These distinctive features make aluminum alloy 6951 one of the preferred alloys for heat transfer and heat exchangers manufactured for aerospace applications.[60]


6063 aluminium alloys are heat treatable with moderately high strength, excellent corrosion resistance and good extrudability.
They are regularly used as architectural and structural members.[61]


The following list of aluminium alloys are currently produced,[citation needed] but less widely[citation needed] used:



  • 2090 aluminium

  • 2124 aluminium

  • 2324 aluminium

  • 6013 aluminium

  • 7050 aluminium

  • 7055 aluminium

  • 7150 aluminium

  • 7475 aluminium



Marine alloys


These alloys are used for boat building and shipbuilding, and other marine and salt-water sensitive shore applications.[62]



  • 5052 aluminium alloy

  • 5059 aluminium alloy

  • 5083 aluminium alloy

  • 5086 aluminium alloy

  • 6061 aluminium alloy

  • 6063 aluminium alloy


4043, 5183, 6005A, 6082 also used in marine constructions and off shore applications.



Cycling alloys


These alloys are used for cycling frames and components[citation needed]



  • 2014 aluminium

  • 6061 aluminium

  • 6063 aluminium

  • 7005 aluminium

  • 7075 aluminium

  • Scandium aluminium



Automotive alloys


6111 aluminium and 2008 aluminium alloy are extensively used for external automotive body panels, with 5083 and 5754 used for inner body panels. Bonnets have been manufactured from 2036, 6016, and 6111 alloys. Truck and trailer body panels have used 5456 aluminium.


Automobile frames often use 5182 aluminium or 5754 aluminium formed sheets, 6061 or 6063 extrusions.


Wheels have been cast from A356.0 aluminium or formed 5xxx sheet.
[63]


Cylinder blocks and crankcases are often cast made of aluminium alloys. The most popular aluminium alloys used for cylinder blocks are A356, 319 and to a minor extend 242.



Air and gas cylinders


6061 aluminum and 6351 aluminium [64] are widely used in breathing gas cylinders for scuba diving and SCBA.Alloys



See also







References





  1. ^ ab I. J. Polmear, Light Alloys, Arnold, 1995


  2. ^ Hombergsmeier, Elke (2007). "Magnesium for Aerospace Applications" (PDF). Archived (PDF) from the original on 6 September 2015. Retrieved 1 December 2012..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""""'""'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}


  3. ^ SAE aluminium specifications list, accessed 8 October 2006. Also SAE Aerospace Council Archived 27 September 2006 at the Wayback Machine., accessed 8 October 2006.


  4. ^ R.E. Sanders, Technology Innovation in aluminium Products, The Journal of The Minerals, 53(2):21–25, 2001. Online ed. Archived 17 March 2012 at the Wayback Machine.


  5. ^ "Sheet metal material". Archived from the original on 15 June 2009. Retrieved 26 July 2009.


  6. ^ Degarmo, E. Paul; Black, J T.; Kohser, Ronald A. (2003). Materials and Processes in Manufacturing (9th ed.). Wiley. p. 133. ISBN 0-471-65653-4.


  7. ^ "Understanding the Aluminum Alloy Designation System". Archived from the original on 29 July 2016. Retrieved 17 July 2016.


  8. ^ "8xxx Series Alloys". aluMATTER.org. Archived from the original on 5 May 2014. Retrieved 6 May 2014.


  9. ^ Davis, J.R. (2001). "Aluminum and Aluminum Alloys" (PDF). Alloying: Understanding the Basics. pp. 351–416. doi:10.1361/autb2001p351. ISBN 0-87170-744-6. Archived (PDF) from the original on 10 February 2017.


  10. ^ Toropova, L.S.; Eskin, D.G.; Kharakterova, M.L.; Dobatkina, T.V. (1998). Advanced Aluminum Alloys Containing Scandium Structure and Properties. Amsterdam: Gordon and Breach Science Publishers. ISBN 90-5699-089-6. Table 49


  11. ^ ab ALLOY 2324-T39 PLATE


  12. ^ Aluminum alloy Alclad 2029-T8


  13. ^ "Archived copy" (PDF). Archived (PDF) from the original on 26 October 2017. Retrieved 25 October 2017.CS1 maint: Archived copy as title (link)


  14. ^ Effect of Mg and Zn Elements on the Mechanical Properties and Precipitates in 2099 Alloy Archived 6 April 2017 at the Wayback Machine.


  15. ^ Precipitation of T1 and θ0 Phase in Al-4Cu-1Li-0.25Mn During Age Hardening: Microstructural Investigation and Phase-Field Simulation Archived 4 April 2017 at the Wayback Machine.


  16. ^ 2195 Aluminum Composition Spec


  17. ^ Super Lightweight External Tank Archived 23 November 2013 at the Wayback Machine., NASA, retrieved 12 Dec 2013.


  18. ^
    "Falcon 9". SpaceX. 2013. Archived from the original on 1 December 2011. Retrieved 2013-12-06.



  19. ^
    Bjelde, Brian; Max Vozoff; Gwynne Shotwell (August 2007). "The Falcon 1 Launch Vehicle: Demonstration Flights, Status, Manifest, and Upgrade Path". 21st Annual AIAA/USU Conference on Small Satellites (SSC07 ‐ III ‐ 6). Archived from the original on 15 December 2013. Retrieved 6 December 2013.



  20. ^ Aluminum alloy 2524-T3


  21. ^ Kaufman, John Gilbert (2000). "Applications for Aluminium Alloys and Tempers". Introduction to aluminum alloys and tempers. ASM International. pp. 93–94. ISBN 978-0-87170-689-8.


  22. ^ 3102 (AlMn0.2, A93102) Aluminum Archived 31 March 2017 at the Wayback Machine.


  23. ^ [1]


  24. ^ https://www.stanleyengineeredfastening.com/fasteners/rivets/pop-micro POP® Micro Rivets]


  25. ^ ASM Handbook, Volume 5: Surface Engineering C.M. Cotell, J.A. Sprague, and F.A. Smidt, Jr., editors, p. 490 DOI: 10.1361/asmhba0001281


  26. ^ Woldman’s Engineering Alloys, 9th Ed. (#06821G) ALLOY DATA/17


  27. ^ ALLOY 6013 SHEET HIGHER STRENGTH WITH IMPROVED FORMABILITY


  28. ^ New, Sleeker Samsung Smartphone Built Stronger with Alcoa’s Aerospace-Grade Aluminum


  29. ^ ALLOY 6022 SHEET Higher Strength with Improved Formability


  30. ^ Cubesat design Specifications Ref. 13 Archived 4 February 2012 at the Wayback Machine.


  31. ^ Placzankis, Brian E. (September 2009). General Corrosion Resistance Comparisons of Medium- and High-Strength Aluminum Alloys for DOD Systems Using Laboratory-Based Accelerated Corrosion Methods (Report). U.S. Army Research Laboratory. DTIC ADA516812; ARL-TR-4937. Retrieved 11 August 2018 – via Internet Archive.


  32. ^ RSP alloys datasheet


  33. ^ 7055 ALLOY-T7751 PLATE AND-T77511 EXTRUSIONS


  34. ^ Aluminum alloy 7065


  35. ^ Aluminum alloy 7085 High strength, high toughness, corrosion-resistant thick plate


  36. ^ Aluminum alloy 7255-T7751 Very high strength, fatigue-resistant plate


  37. ^ Y. Barbaux, G. Pons, "New rapidly solidified aluminium alloys for elevated temperature applications on aerospace structures", Journal de Physique IV Colloque, 1993, 03 (C7), pp.C7-191-C7-196


  38. ^ R.B. Ross,
    "Metallic Materials Specification Handbook", p.1B-11



  39. ^ Aluminum 8030 Alloy (UNS A98030)


  40. ^ MEE433B Aluminum-Lithium Alloys


  41. ^ ab "Aluminum 8176 Alloy (UNS A98176)". AZO materials. May 20, 2013. Retrieved 2018-06-22.


  42. ^ ab ASM Metals Handbook Vol. 2, Properties and Selection of Nonferrous Alloys and Special Purpose Materials, ASM International (p. 222)


  43. ^ Gilbert Kaufman, J (2000). "3". Introduction to Aluminum Alloys and Tempers. ASM International. p. 25. ISBN 9781615030668.


  44. ^ ASTM B 26 / B 26M – 05


  45. ^ Parker, Dana T. Building Victory: Aircraft Manufacturing in the Los Angeles Area in World War II, p. 39, 118, Cypress, CA, 2013.
    ISBN 978-0-9897906-0-4.



  46. ^ abcd Ahmad, Zaki (2003). "The properties and application of scandium-reinforced aluminum". JOM. 55 (2): 35. Bibcode:2003JOM....55b..35A. doi:10.1007/s11837-003-0224-6.


  47. ^ Marquis, Emmanuelle (2002). "Precipitation strengthening at ambient and elevated temperatures of heat-treatable Al(Sc) alloys". Acta Materialia. 50 (16): 4021. doi:10.1016/S1359-6454(02)00201-X.


  48. ^ Vo, Nhon (2016). "Role of silicon in the precipitation kinetics of dilute Al-Sc-Er-Zr alloys". Materials Science and Engineering: A. 677 (20): 485. doi:10.1016/j.msea.2016.09.065.


  49. ^
    "Heat Resistant Superalloys". NanoAl. 2016. Archived from the original on 12 November 2016. Retrieved 11 November 2016.



  50. ^ Vo, Nhon (2014). "Improving aging and creep resistance in a dilute Al-Sc alloy by microalloying with Si, Zr, and Er". Acta Materialia. 63 (15): 73. doi:10.1016/j.actamat.2013.10.008.


  51. ^ Schwarz, James A.; Contescu, Cristian I.; Putyera, Karol (2004). Dekker encyclopedia of nanoscience and nanotechnology. 3. CRC Press. p. 2274. ISBN 0-8247-5049-7. Archived from the original on 28 January 2017.


  52. ^ Bjerklie, Steve (2006). "A batty business: Anodized metal bats have revolutionized baseball. But are finishers losing the sweet spot?". Metal Finishing. 104 (4): 61. doi:10.1016/S0026-0576(06)80099-1.


  53. ^ "Easton Technology Report : Materials / Scandium" (PDF). EastonBike.com. Archived (PDF) from the original on 23 November 2008. Retrieved 3 April 2009.


  54. ^ "Small Frame (J) – Model 340PD Revolver". Smith & Wesson. Archived from the original on 30 October 2007. Retrieved 20 October 2008.


  55. ^ Fundamentals of Flight, Shevell, Richard S., 1989, Englewood Cliffs, Prentice Hall,
    ISBN 0-13-339060-8, Ch 18, pp 373–386.



  56. ^ Winston O. Soboyejo, T.S. Srivatsan, "Advanced Structural Materials: Properties, Design Optimization, and Applications", p. 245 Table 9.4. - Nominal composition of Aluminium Aerospace Alloys


  57. ^ "Aluminum in Aircraft". Archived from the original on 21 April 2009. Retrieved 2009-04-21.


  58. ^ Wagner, PennyJo (Winter 1995). "Aircraft aluminum". Archived from the original on 5 April 2009. Retrieved 2009-04-21.


  59. ^ "Aluminum Alloy 4047". Lynch Metals, Inc. Archived from the original on 27 February 2017. Retrieved 24 July 2017.


  60. ^ "Aluminum Alloy 6951". Lynch Metals, Inc. Archived from the original on 27 February 2017. Retrieved 24 July 2017.


  61. ^ Karthikeyan, L.; Senthil Kumar, V.S. (2011). "Relationship between process parameters and mechanical properties of friction stir processed AA6063-T6 aluminum alloy". Materials and Design. 32: 3085–3091. doi:10.1016/j.matdes.2010.12.049.


  62. ^ Boatbuilding with aluminium, Stephen F. Pollard, 1993, International Marine,
    ISBN 0-07-050426-1



  63. ^ Kaufman, John (2000). Introduction to aluminum alloys and tempers (PDF). ASM International. pp. 116–117. ISBN 0-87170-689-X. Archived (PDF) from the original on 15 December 2011. Retrieved 9 November 2011.


  64. ^ "A short Review of 6351 Alloy Aluminum Cylinders". Professional Scuba Inspectors. 1 July 2011. Archived from the original on 10 December 2013. Retrieved 18 June 2014.




External links



  • Aluminium alloys for die casting according to the Japanese Standards, China National Standards, U.S. Standards and German Standards

  • Aluminium alloys for chill casting and low pressure casting according to the Japanese, Chinese, American and German industrial standard

  • Aluminium alloys for extrusion according to the German Standards

  • The Aluminium Association's chemical composition standards for wrought aluminium

  • "The EAA Alumatter" computer-based reference database containing technical information on the most widely used aluminium alloys, their mechanical, physical and chemical properties

  • "Applications for Aluminium Alloys and Tempers.

  • Influence of Heat Treatment on the Mechanical Properties of Aluminium Alloy

  • Aluminium: physical properties, characteristics and alloys










Popular posts from this blog

Y

Mount Tamalpais

Indian Forest Service