Aluminium alloys (or aluminum alloys; seespelling differences) are alloys in which aluminium(Al) is the predominant metal. The typical alloying elements are coppermagnesiummanganese,silicontin 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 andextrusions. Cast aluminium alloys yield cost-effective products due to the low melting point, although they generally have lower tensile strengthsthan 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.

Alloys composed mostly of aluminium have been very important in aerospace manufacturingsince 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.

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 negative 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. Aircraft mechanics deal daily with aluminium alloy corrosion.

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, and ASTM International.

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Aluminium Alloys

Aluminium Alloy 1000

Alloy Designation

UK
Specifications

US
Specifications

US Federal
Specifications

European
Specifications

Other

1050A
A91050

BS 1B 1050A Sheet, plate
BS 5 L36 Rivet stock

 

 

WS 3.0255
EN AW- Al99.5

A5 - 1050A

1080A

BS 1A Alloy 1080A

 

 

WS 3.0285

A8 - 1080A

1100
A91100

 

AMS 4001 1100-0 Sheet and Plate
AMS 4003 1100-H14 Sheet and Plate
AMS 4062 1100-H14 Tube
AMS 4102 1100-F Bars, Rods and Wire
AMS 4180 1100-H18 Wire

QQ-A-225/1 1100-TF Bar
QQ-A-250/1 1100-T0 Sheet
QQ-A-250/1 1100-H14 Sheet
WW-T-700/1 1100-H14 Seamless drawn tube
MIL-W-6712 Type II

 

 

1200

BS 6 L16 1200-H14 or H24 sheet
BS 6 L17 1200-O temper sheet
BS 5 L34 1200 Forging stock
BS 4 L 54 1200 Hydraulic tube
BS L116 Alloy 1200 Tube Drawn
BS 1C

 

 

WS 3.0205

A4 - 1200

1350
A91350

BS 1E

 

 

WS 3.0257
EN AW- Al99.5(A)

A5/L

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Aluminium Alloy 2000

Alloy Designation

UK
Specifications

US
Specifications

US Federal
Specifications

European
Specifications

Other

2011
A92011

BS FC1 2011 Bar & Rod

 

QQ-A-225/3 2011 Bar, cold drawn

WS 3.1655

AlCu(Bi/Mg)Pb
A-U5PbBi

2014A
A92014

BS 7 L37 2014A Rivet stock
BS 3 L63 2014A-T6 tube
BS 2 L77 2014A Forging stock
BS 2 L87 2014A-T6 Bar
BS 2 L93 2014A-T651 Plate
BS L102 2014A-T4 Bar
BS L103 2014A-T4 Forging Stock
BS L105 2014A-T4 Drawn tube
BS L156 2014A-T4 Bare Sheet
BS L157 2014A-T6 Bare Sheet
BS L158 2014A-T4 Bare Sheet, close tolerance BS L159 2014A-T6 Bare Sheet, close toleranceBS L163 2014A-T3 Clad Sheet
BS L164 2014A-T4 Clad Sheet
BS L165 2014A-T6 Clad Sheet
BS L166 2014A-T4 Clad Sheet, close tolerance BS L167 2014A-T6 Clad Sheet, close toleranceBS L168 2014A-T6 / T6511 BarDTD 5010 Plate
DTD 5030 Clad plate
DTD 5040 Clad plate BS H15, HS15, HP15, HT15, HE15

AMS 4028 2014-T0 Sheet /Plate
AMS 4029 2014-T651 Sheet , plate
AMS 4121 2014-T6/T6511 Bar
AMS 4133 2014-T6 Forging
AMS 4134 2014-T6 Die Forging
AMS 4153 2014-T6 Extrusions

QQ-A-200/2 2014-T4 Extruded bar
QQ-A-200/2 2014-T6 Extruded bar
QQ-A-225/4 2014-T4 Cold finished bar
QQ-A-225/4 2014-T6 Cold finished bar
QQ-A-250/3 2014-T4 Clad sheet
QQ-A-250/3 2014-T6 Clad sheet
QQ-A-367
MIL-A-21180

WS 3.1255
EN 2087 2014A-T6 Clad sheet
EN 2088 2014A-T4 Clad sheet
EN 2089 2014A-T6 Sheet
EN 2100 2014A-T4511 Extruded bar
EN 2324 2014A-T6
EN 2384 2014A-T6511 Extruded bar
EN 2395 2014A-T4 Sheet
EN 2634 2014A-T4511 Extruded bar EN 2635 2014A-T6511 Extruded bar, peripheral coarse grain control
EN 2639 2014A-T6

A-U4SG
AlCu4SiMg
AECMA 2387

2017A
A92017

 

AMS 4110 2017-451 (see AMS 4118)
AMS 4118 2017-T4/T451 Bar

QQ-A-225/5 Alloy 2017a

 

 

2024
A92024

BS 2 L97 2024-T351 Plate
BS 2 L98 2024-T4 Plate
BS L109 2024-T4 Clad sheet
BS L110 2024-F Clad sheet
British Aerospace S071009
DTD 5100A Clad plate

AMS 4033 2024-T351 
AMS 4034 2024-T351
AMS 4035 2024-T0 sheet , plate
AMS 4036 2024-T3/T351 sheet
Alclad one side
AMS 4037 2024-T3/T351 sheet , plate
AMS 4040 2024-T0 Alclad sheet, plate
AMS 4041 2024-T3/T351 Alclad sheet, plate
AMS 4077 2024-T0 Alclad sheet, plate
AMS 4086 2024-T3 Seamless, drawn
Hydrualic Tube
AMS 4087 2024-T0 Seamless tube
AMS 4088 2024-T3 Seamless tube
AMS 4112 2024-T6 (see AMS 4339)
AMS 4119 2024-T351 (see AMS 4120)
AMS 4120 2024-T4/T351 Bar, wire
AMS 4152 2024-T3 Extrusions
AMS 4164 2024-T3510 Extrusions
AMS 4165 2024-T3511 Extrusions
AMS 4193 2024-T861 Sheet, plate
AMS 4194 2024-T361 1-1.5% Alclad
AMS 4195 2024-T861 1.5% Alclad
AMS 4270 2024-T3 Alclad sheet
AMS 4339 2024-T851 Bar, rod

QQ-A-200/3 2024-T4 Extruded bar
QQ-A-200/3 2024-T8 Extruded bar
QQ-A-225/6 2024-T351 Cold finished bar
QQ-A-225/6 2024-T4 Cold finished bar
QQ-A-225/6 2024-T851 Cold finished bar
QQ-A-250/4 2024-0 Sheet and Plate
QQ-A-250/4 2024-T3 Sheet and Plate
QQ-A-250/5 2024-0 Alclad sheet and plate
QQ-A-250/5 2024-T3 Alclad sheet and plate
WW-T-700/3 2024-T3 Seamless, drawn tube
MIL-T-50777 Seamless Tube
MIL-A-81596 Foil

WS 3.1354 Bare sheet
WS 3.1364 Alclad sheet
WS 3.1355
EN 2090 2024-T3 Clad sheet
EN 2091 Clad sheet
EN 2318 2024-T3511 Extruded bar
EN 2321
EN 2419 T351
EN 2633 2024-T3511 Extruded bar with peripheral coarse grain control
EN 2638
EN 2703 2024-T4 Clad sheet
EN 3447
EN 3474 2024-T81 Sheet
EN 3550
EN 3997 2024-T3 Sheet
EN 3998 2024-T4 Sheet
EN 3999 2024-T351 Sheet
EN 4001 2024-T351 Clad sheet
EN 4101 2024-T4 Sheet
EN 6000

Airbus ABM1-1005
BAEM 0145 / BAEM 0172 A-U4G1
AIR 9048.630
AIR 9048.100
AIR 9048.110
AIR 9048.120
AIR 9048.130
AIR 9048.140 AIR 9049
AIR 9051A
AECMA 2710
ASN-A-3001
ASN-A-3010
ASN-A-3012
ASN-A-3058
ASN-A-3351
ASN-A-3048
CCT VA279
NCT 10-235-03MD
NCT 15-235-06MB
NCT 15-235-07MB

2031

BS 2 L83 2031 Rivet stock
BS H12

 

 

 

A-U2N

2219

 

AMS 4031 2219-T0 Sheet, plate
AMS 4066 2219-T851 Seamless tube
AMS 4068 2219-T351 Seamless tube
AMS 4094 2219-T851 Alclad sheet
AMS 4095 2219-T351 Alclad sheet
AMS 4096 2219-T0 Alclad sheet
AMS 4143 2219-T6 Forgings
AMS 4144 2219-T851/T852 Hand
Forgings
AMS 4162 2219-T8511 Extrusion
AMS 4163 2219-T3511 Extrusion

QQ-A-250/30 2219-0
MIL-A-22771

 

 

2618A

BS H16
DTD 745A 2618A Forging stock
DTD 5014 2618-T6511 bar
DTD 5014A 2618-T6511 bar

DTD 5070B 2618-TF Clad sheet
DTD 717A 2618 A -T6 Forging Stock and Forgings
DTD 5084A T6 Forging Stock and Forgings
DTD 731B 2618 T6 Forging Stock and Forgings

AMS 4132 2618-T61 Die & Hand forgings

 

 

A-U2GN

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Aluminium Alloy 3000

Alloy Designation

UK
Specifications

US
Specifications

US Federal
Specifications

European
Specifications

Other

3003
A93003

 

AMS 4006 3003-T0 Sheet, plate
AMS 4008 3003-H14 Sheet, plate
AMS 4067 3003-H14 Seamless tube

QQ-A-225/2 3003 Cold finished bar
QQ-A-250/2 3003 Sheet and plate
WW-T-700/2 3003 Seamless tube

 

 

3103

BS N3 
BS 4 L59 3103-H16/H26 Sheet
BS 4 L60 3103-H12/H22 Sheet
BS 4 L61 3103-O Temper Sheet

 

 

WS 3.0515

 

3105

BS N31

 

 

WS 3.0505

 

Aluminium Alloy 4000

Alloy Designation

UK
Specifications

US
Specifications

US Federal
Specifications

European
Specifications

Other

4043

BS N21 Tig and Mig Wire

AMS 4190 Welding wire (AWS 5.10)

 

 

AlSi5(A)
A-S5

4047

BS N2 Brazing sheet and wire

AMS 4185 Welding wire (AWS 5.10)

QQ-B-655 Class FS-BA1 Si4

 

AlSi12(A)
A-S12

Aluminium Alloy 5000

Alloy Designation

UK
Specifications

US
Specifications

US Federal
Specifications

European
Specifications

Other

5005

BS N41 5005

 

 

 

A-G0.6 - 5005

5052
A95052

 

AMS 4004 5052 Strain Hardened Foil 
AMS 4015 5052-T0 Sheet, Plate and Foil
AMS 4016 5052-H32 Sheet, Plate and Foil
AMS 4017 5052-H34 Sheet, Plate and Foil
AMS 4069 5052-0 Tube Drawn Seamless Close Tols
AMS 4070 5052-0 Tube Drawn Seamless
AMS 4071 5052-0 Tube Drawn Seamless Hydraulic 
AMS 4114 5052-TF Bar, Rod Rolled or Cold Finish
AMS 4175 5052 Honeycomb Core (use AMS 4348)
AMS 4348 5052 Core Honeycomb

QQ-A-225/7 5052 Cold finished bar
QQ-A-250/8 5052-0 Sheet and plate
QQ-A-250/8 5052-H32 Sheet and plate
QQ-A-250/8 5052-H34 Sheet and plate
WW-T-700/4 5052 Seamless tube

 

 

5056

BS 3 L58 Alloy 5056 A Rivet Stock

AMS 4182 5056-0 Wire
AMS 4349 5056 Core Honeycomb

QQ-A-430 5056-0 Rivet wire

WS 3.3555

A-G5M

5083
A95083

BS N8 Alloy 5083 Sheet and Plate

AMS 4056 5083-0 Sheet and Plate

QQ-A-200/4 5083 Extruded bar, tube
QQ-A-250/6 5083 Sheet and Plate

WS 3.3547 

AlMg4.5Mn
A-G4.5MC

5154 A

BS N5 Alloy 5154A

 

 

 

 

5251

BS 5L44 Alloy 5251 Forging Stock and Forgings
BS 3L56 Alloy 5251 TubeDrawn Hydraulically Tested
BS 3 L80 Alloy 5251-0 Sheet and Strip
BS 3 L81 Alloy 5251-H16/H26 Sheet and Strip
BS N4 Alloy 5251

 

 

WS 3.3525

A-G2M

5454
A95454

BS N51 Alloy 5454

 

QQ-A-250/10 5454 Sheet and Plate

WS 3.3537

A-G2.5MC

5554

BS N52 Alloy 5554

 

 

 

 

5556A

BS N61 Alloy 5556A Wire MIG and TIG

 

 

 

 

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Aluminium Alloy 6000

Alloy Designation

UK
Specifications

US
Specifications

US Federal
Specifications

European
Specifications

Other

6053
UNS A96053

6053- Wire

 

 

 

 

6056

6056-Wire

 

 

 

 

6061
A96061
A86061

BS L117 Alloy 6061 Tube Drawn T6 
BS L118 Alloy 6061 Tube Drawn T6 Hydraulically Tested 
H20
HE20 6061 Extrusions
HP20 6061 Plate
HS20 6061 Sheet

AMS 4009 6061-0 Foil 
AMS 4021 6061-0 Alclad Sheet and Plate
AMS 4022 6061 Alclad Sheet and Plate Cancelled
AMS 4023 6061 Alclad Sheet and Plate Cancelled
AMS 4025 6061-0 Sheet and Plate
AMS 4026 6061-T4 Sheet T451 Plate
AMS 4027 6061-T6 Sheet and T651 Plate
AMS 4053 6061 Cancelled
AMS 4079 6061-0 Tube Drawn Seamless Close Tolerence 
AMS 4080 6061-0 Tube Drawn Seamless
AMS 4081 6081-T4 Tube Drawn Seamless Hydraulic
AMS 4082 6061-T6 Tube Drawn Seamless
AMS 4083 6061-T6 Tube Drawn Seamless Hydraulic
AMS 4091 Superseded by AMS 4081
AMS 4092 Superseded by AMS 4082
AMS 4093 Superseded by AMS 4083
AMS 4113 6061-T6 Extruded shapes
AMS 4115 6061-0 Cold finished bars, rod, wire
AMS 4116 6061-T4 Cold finished bars, rod, wire
AMS 4117 6061-T6/T651 Cold finished bars, rod, wire
AMS 4127 6061-T6 Forgings Rolled or Forged 
AMS 4128 6061-T451 Bars Rolled or Forged
AMS 4129 6061-T651 Superseded by 4117
AMS 4146 6061-T4 Forgings
AMS 4150 6061-T6 Extrusions and Rings
AMS 4160 6061-0 Extrusion 
AMS 4161 6061-T4 Extrusion 
AMS 4172 6061-T4511 Extrusion
AMS 4173 6061-T6511 Extrusion

QQ-A-200/8 6061-T6/T6511 Extruded bar, tube, section
QQ-A-200/16 6061-T6 extruded stuctural shapes 
QQ-A-225/8 6061-T6 / T651 Cold finished bar, tube, section
QQ-A-250/11 6061 Sheet and Plate
WW-T-700/6 6061-T6 Seamless, drawn tube
MIL-T-7081 6061-T6 Hydraulic tube
QQ-A-367 6061 Forgings

WS 3.3211
WS 3.3214
EN 2392 6061-T6 Tube
EN 2694 6061-T6 Sheet, strip
EN 3341 6061-T4 Sheet, strip
EN 3342 6061-T4 Extruded bar
EN 3557 
EN 4213 6061-T651 Plate

AWCO-22
Birmetal-016
BA22
Duricilium-Q
Hiduminium-43
LA 380
ABM 2-3023
ABM 2-3025
ABM 2-3026
ABS 5144
ABS 5151
BACM 123 
BACM 171 6061-0 Tube
A-GSUC 
L-3453
ASN-A-3277
NCT 15-238-01
AIR 9048.210 6061-0 Sheet
AIR 9048.220 6061-T4 Sheet
AIR 9048.230 6061-0 Sheet
AIR 9048.240 6061-T6 Sheet
AIR 9049

6063

BS H9 Alloy 6063
DTD 372B 6063 Bars and Sections

AMS 4156 6063-T6 Extrusions

QQ-A-200/9 6063 
MIL-P-25995
ASTM B210
ASTM B221
ASTM B241
ASTM B345
ASTM B429
ASTM B483
ASTM B491

 

 

6082
A96082

BS L111 Alloy 6082-T6 Bars and Sections
BS L112 Alloy 6082 Forging Stock and Forgings
BS L113 Alloy 6082-T6 Sheet and Strip
BS L114 Alloy 6082-T6 Tube Drawn
BS L115 Alloy 6082-T651 PlateBS HE30 6082 Extrusions
BS HP30 6082 Plate
BS HT30 6082 Tube
BS HG30 6082 Wire
BS HS30 6082 Sheet

 

 

WS 3.2315
EN 2326 6082-T6 Extruded bar
EN 2636 6082-T6 Bar (with peripheral coarse grain control)
EN 4273
EN 4274 (with peripheral coarse grain control)

Alcoa-920
Birmetal-071
BA 25
Durcilium-S
Hiduminium-44
Anticorodal-090
AlMgSi1Mn
A-SGM0.7
AECMA 2389 Tube
AECMA 2390 Tube
UNI 3571
UNI 9006/4
L-3453

6101 A

BS 91E Alloy 6101 A

 

 

 

 

6262

 

 

QQ-A-225/10 6262 Wire, Rod and Bar

 

 

6463

BS E6 Alloy 6463

 

 

 

 

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Aluminium Alloy 7000

Alloy Designation

UK
Specifications

US
Specifications

US Federal
Specifications

European
Specifications

Other

7017

 

 

 

 

 

7020

BS H17 Alloy 7020

 

 

WS 3.4335

Alcan GB-D74S
BA 733
Hiduminium-45
EN AW-AlZn4.5Mgl
A-Z5G

7050
A97050

 

AMS 4050 7050-T7451 plate
AMS 4107 7050-T74 die forgings
AMS 4108 7050-T7452 hand forgings
AMS 4201 7050-T7452 die forgings
AMS 4340 7050-T76511 extrusions
AMS 4342 7050-T74511 extrusions

ASTM B247
ASTM B316
MIL-A-22771
QQ-A-430

 

W.S. 3.4144
EN 2689
EN 3338 7050-T7451 Bar (with peripheral coarse grain control)
EN 3982 7050-T7451 plate
EN 3983 7050-T7651 plate
EN 4449 7050-T76 sheet
EN 4450F 7050-T762 sheet

ABS 5239
AlZn6CuMgZr
AIR 9048.740 7050-T7451 plate

7075
A97075
A87075

BS 2 L95 Alloy 7075-T651 Plate
BS 2 L88 Alloy 7075-T6 Clad Sheet and Strip
BS L160 Alloy 7075-T73511 Bars and Sections
BS L161 Alloy 7075 Forging Stock and Forgings 
BS L162 Alloy 7075 Forging Stock and Forgings 
BS L170 Alloy 7075-T6511 Bars and Sections
DTD 5110 7075 Clad Plate
DTD 5124 7075 Bars and Sections

AMS 4038 7075-T651 Superseded by AMS 4045
AMS 4039 7075-T651 Superseded by AMS 4049
AMS 4044 7075 -0 Sheet and Plate
AMS 4045 7075-T6 Sheet and T651 Plate
AMS 4046 7075-T6 Alclad one side Sheet, T651 Plate
AMS 4048 7075-T0 Alclad Sheet and Plate
AMS 4049 7075 -T6 Alclad Sheet and T651 Plate
AMS 4078 7075-T351 Plate 
AMS 4122 7075-T6 Cold finished rod, bar, wire
AMS 4123 7075-T651 Cold finished bar, rod 
AMS 4124 7075-T7351 Cold finished bar, rod, wire
AMS 4126 7075-T6 Forgings 
AMS 4131 7075-T74 Forgings
AMS 4139 7075 Forgings (Non-Current)
AMS 4141 7075-T73 Die Forgings 
AMS 4147 7075-T7352 Forgings
AMS 4154 7075-T6 Extrusions 
AMS 4166 7075-T73 Extrusion
AMS 4167 7075-T73511 Extrusions 
AMS 4168 7075-T6511 Extrusions Unstraightened
AMS 4169 7075-T6511 Extrusions Straightened 
AMS 4174 7075-T73 Flash Welded Rings
AMS 4186 7075-TF Cold finished bar, rod, wire
AMS 4187 7075-0 Cold finished bar, rod, wire

QQ-A-250/13 7075-0 Alclad sheet and plate
QQ-A-250/13 7075-T6 Alclad sheet and plate
QQ-A-250/18 7075-0 Clad one side, sheet and plate
QQ-A-250/18 7075-T6 Clad one side, sheet and plate
QQ-A-250/24 7075-T7651 Plate
QQ-A-250/25 7075 Sheet, clad with7072-T76
QQ-A-250/26 7075 Sheet, clad with7011-T76
QQ-A-367 Alloy 7075-T6 Forgings
MIL-A-22771

EN 2127

AIR 9048.690 7075-T7351 Plate
AIR 9048.700 7075-T7351 Plate
AIR 9048.710 7075-T7351 Plate
AIR 9049

7175

 

AMS 4109 7175-T736 Superseded by AMS 4149
AMS 4148 7175-T6 Die Forgings
AMS 4149 7175-T74 Forgings 
AMS 4179 7175-T7452 Forgings 
AMS 4344 7175-T73511 Extrusion
MIL-A-22771 7175 T74 / T7452

 

WS 3.4364

ABS 5064
IPS03-02-000/0008-03
DAN 26/422
LN 9073

 Others

Alloy Designation

UK
Specifications

US
Specifications

US Federal
Specifications

European
Specifications

Other

1145

 

AMS 4011 1145-0 Foil and Light Gauge Sheet

 

 

 

1199

BS 1 Alloy 1199

 

 

French A9

 

2004
A92004

 

AMS 4208 2004-F Sheet
AMS 4209 2004-F Sheet, clad

 

 

 

2018

 

AMS 4140 2018-T61 Die Forgings

 

QQ-A-367

 

2025

 

AMS 4130 2025-T6 Die Forgings

 

QQ-A-367

 

2090
A92090

 

AMS 4232 2090-T86 Extrusion
AMS 4251 2090-T83 Sheet
AMS 4303 2090-T81 Plate

 

 

 

2117

L86 2117 Rivet Stock

AMS 7222

 

WS 3.1305

A-U2G - 2117

2124
A92124

 

AMS 4101 2124-T851 Plate
AMS 4221 2124-T8151 Plate

 

QQ-A-250/29 T851

 

2319
A92319

 

AMS 4191 2319 Welding Wire

 

 

AWS 5.10 ER 2319

4032

 

AMS 4145 4032-T6 Forging

QQ-A-367

 

AlSi10Mg

4008

 

AMS 4181 4008 Welding wire -
AWS A5.10 Class R-A356.0

 

 

 

4145

 

AMS 4184 4145 Brazing filler

QQ-B-655 Class FS-BA1 Si3

 

 

4643

 

AMS 4189 4643 Welding wire

 

 

 

4032

 

AMS 4318 4032-T86 Bar, cold finished
AMS 4319 4032-T651 Bar, cold finished

 

 

 

5004

DTD 5004 Forging Stock and Forgings

 

 

 

 

5086

 

 

QQ-A-250/7 5086 sheet and plate

 

 

5456

 

 

QQ-A-250/9 5456 Sheet and Plate

 

 

5754

 

 

 

 

A-G3M

6013

 

AMS 4216 6013-T6 Sheet
AMS 4347 6013-T4 Sheet

 

 

 

6056A

BS B6 Alloy 6056A

 

 

 

 

6060

 

 

 

WS 3.3535
WS3.3206

AlMgSi0.5
A-GS

6062

 

AMS 4150 6062-T6 Extrusions
AMS 4155 6062-T6 Superseded by AMS 4150

 

 

 

6066

BS 2 L84 Alloy 6066-T4 Bars, Sections

 

 

 

 

6151

 

AMS 4125 6151-T6 Die Forgings, Forged Rings

QQ-A-367 
MIL-A-22771

 

 

7014

BS L171 Alloy 7014 Forgings
BS L172 Alloy 7014 Forging Stock
DTD 5094A 7014 Forging Stock and Forgings
DTD 5024 7014 Forging Stock and Forgings
DTD 5044 7014 Bars and Sections
DTD 5104A 7014 Forging Stock and Forgings
DTD 5110 7014 Clad Plate

 

 

 

 

7010

 

AMS 4203 7010-T7351 Plate
AMS 4204 7010-T7651 Plate
AMS 4205 7010-T3651 /T7451 Plate

 

 

 

7049

 

AMS 4111 7049-T73 Forgings
AMS 4157 7049-T73511 Extrusions
AMS 4159 7049-T76511 Extrusions
AMS 4200 7049-T7351 Plate

QQ-A-367 Alloy 7049 T73

 

 

7079

 

AMS 4138 7079-T6 Forgings non-current

 

 

 

7149

 

AMS 4343 7149-T73511 Extrusion

 

 

 

7150

 

AMS 4252 7150-T7751 Plate
AMS 4306 7150-T6151 Plate
AMS 4307 7150-T61511 Extrusion
AMS 4345 7150-T77511 Extrusion

 

 

 

7178
A95083

 

AMS 4051 7178-0 Alclad Sheet and Plate

QQ-A-250/15 T0

 

 

7475

 

AMS 4084 7475-T61 Sheet
AMS 4085 7475-T761 Sheet
AMS 4089 7475-T7651 Plate
AMS 4090 7475-T651 Plate
AMS 4100 7475-T761 Alclad Sheet
AMS 4202 7475-T7351 Plate
AMS 4207 7475-T61 Sheet Alclad

 

 

 

8009

 

AMS 4308 8009-H112 Sheet
AMS 4309 8009-H112 Extrusion

 

 

 

8011

 

 

 

 

A-FeS

8090

 

AMS 4259 8090-T6 Sheet

 

 

 

Miscellaneous

4 L35 Ingots and Casting (Obs)
3 L51 Ingots and Castings (Obs)
3 L52 Ingots and Castings (Obs)
3 L53 Ingots and Castings (Obs)
3 L78 Ingots and Castings (Obs)
3 L78 Ingots and Castings (Obs)
2 L91 Ingots and Castings (Obs)
2 L92 Ingots and Castings (Obs)
2 L99 Ingots and Castings (Obs)
L119 Ingots and Castings
L154 Ingots and Castings
L155 Ingots and Castings
2 L169 Ingots and Castings
L173 Ingots and Castings
L174 Ingots and Castings
DTD 150A 7017M Forging Stock and Forgings
DTD 246C Forging Stock and Forgings
DTD 297A Forging Stock and Forgings
DTD 342B Forging Stock and Forgings
DTD 716B Ingots and Casting
DTD 722 Ingots and Casting
DTD 727 Ingots and Casting
DTD 735B Ingots and Casting
DTD 5008 Ingots and Casting
DTD 5018 Ingots and Casting
DTD 5114 Bars and Sections
DTD 5120B Plate
DTD 5130 Plate
DTD 5636 Forgings BS 2L85 Forging Stock and Forgings

 

 

 

 

 

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Contents

·         1 Engineering use and aluminium alloys properties

o    1.1 Overview

o    1.2 Aluminium alloys versus types of steel

o    1.3 Heat sensitivity considerations

o    1.4 Household wiring

·         2 Alloy designations

o    2.1 Temper designation

o    2.2 Wrought alloys

o    2.3 Cast alloys

o    2.4 Named alloys

·         3 Applications

o    3.1 Aerospace alloys

§  3.1.1 Scandium–aluminium

§  3.1.2 List of aerospace aluminium alloys

o    3.2 Marine alloys

o    3.3 Cycling alloys

o    3.4 Automotive alloys

o    3.5 Air and gas cylinders

·         4 See also

·         5 References

·         6 External links

Engineering use and aluminium alloys properties

Overview

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 strengthdensityductility, formability, workability, weldability, and corrosion resistance, to name a few. A brief historical overview of alloys and manufacturing technologies is given in Ref. 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 alloys 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 andcrankcases 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 ofthreads, 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 also is subject to internal stresses and strains when it is overheated; the tendency of the metal to creep under these stresses tends to result in delayed distortions. For example, the warping or cracking of overheated aluminium automobile cylinder heads is commonly observed, 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:

-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 forwrought alloys. Each alloy is given a four-digit number, where the first digit indicates the major alloying elements.

·                     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. They are also known as silumin.

·                     5000 series are alloyed with magnesium.

·                     6000 series are alloyed with magnesium and silicon. They are easy to machine, areweldable, 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 alloy.

·                     7000 series are alloyed with zinc, and can be precipitation hardened to the highest strengths of any aluminium alloy (tensile strength up to 700 MPa for the 7068 alloy).

·                     8000 series are alloyed with other elements which are not covered by other series.Aluminium-lithium alloys are an example [7]

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[8]

0.25

0.40

0.05

0.05

0.05

   

0.05

         

0.03

 

99.5 min

1060

0.25

0.35

0.05

0.03

0.03

0.03

0.05

0.05

0.03

0.03

0.03

0.03

0.03

0.03

 

99.6 min

1100

0.95 Si+Fe

0.05–0.20

0.05

   

0.10

           

0.05

0.15

99.0 min

1199[8]

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

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 column lists the limits that apply to all elements, whether a table column exists for them or not, for which no other limits are specified.

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:

·                      1xx.x series are minimum 99% aluminium

·                      2xx.x series copper

·                      3xx.x series silicon, copper and/or magnesium

·                      4xx.x series silicon

·                      5xx.x series magnesium

·                      7xx.x series zinc

·                      8xx.x series tin

·                      9xx.x other elements

Minimum tensile requirements for cast aluminium alloys

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[10]

·                      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 alloyHiduminiumR.R. alloys: pre-war nickel-aluminium alloys, used in aerospace and engine pistons, for their ability to retain strength at elevated temperature.

Applications

Aerospace alloys

Scandium–aluminium

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 and the width of precipitate-free zones that normally exist at the grain boundaries of age-hardenable aluminium alloys is reduced.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. However, titanium alloys, which are stronger but heavier, are cheaper and much more widely used.

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.

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

List of aerospace aluminium alloys

The following aluminium alloys are commonly used in aircraft and other aerospacestructures:

·                      7068 aluminium

·                      7075 aluminium

·                      6061 aluminium

·                      6063 aluminium

·                      2024 aluminium

·                      5052 aluminium

·                      7050 aluminium

Note that the term aircraft aluminium or aerospace aluminium usually refers to 7075.

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.

The following list of aluminium alloys are currently produced, but less widely used:

·                      2090 aluminium

·                      2124 aluminium

·                      2195 aluminium – Al-Li alloy, used in Space Shuttle Super Lightweight external tank,[20]and the SpaceX Falcon 9[21] and Falcon 1e second stage launch vehicles.[22]

·                      2219 aluminium – Al-Cu alloy, used in the original Space Shuttle Standard Weight external tank

·                      2324 aluminium

·                      5059 aluminium – Used in experimental rocket cryogenic tanks

·                      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.

·                      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

·                      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. Hoods have been manufactured from 20366016, and 6111 alloys. Truck and trailer body panels have used 5456 aluminum.

Automobile frames often use 5182 aluminium or 5754 aluminium formed sheets, 6061 or6063 extrusions.

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

Air and gas cylinders

6061 aluminum and 6351 aluminium [25] are widely used in breathing gas cylinders for scuba diving and SCBA.

 

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Disclaimer
Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.