7475 aircraft aerospace grade aluminum plate sheet has good technological plasticity and superplasticity, and the thin plate parts with complex shape can be superplastic forming with ultra-fine crystal structure.
7475 belongs to the Al-Zn-Mg-Cu series alloy. The 7475 aircraft aerospace grade aluminum plate sheet is used for aluminum-clad and non-aluminum-clad plates for the fuselage, wing skeletons, stringers, etc., and other existing high strength Also need parts with high fracture toughness.
7475 Aircraft aerospace grade aluminum plate sheet
The 7475 aluminum alloy sheet is supplied with O, T6 and T76, and the thick plate is supplied with T651, T7651 and T7351. Compared with the state of T76 and T6, the corrosion resistance, especially the anti peeling corrosion resistance, was improved, but the strength was reduced. Compared with the state of T7651 and T651, the resistance to peeling corrosion and stress corrosion resistance is improved, and the fracture toughness is improved, but the strength is reduced.
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Chemical Composition of 7475 Alloy |
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|
Alloy |
Si |
Fe |
Cu |
Mn |
Mg |
Cr |
Ni |
Zn |
Ti |
Zr |
Others |
Al |
|
|
Each |
Total |
||||||||||||
|
7475 |
0.1 |
0.12 |
1.2~1.9 |
0.06 |
1.9~2.6 |
0.18~0.25 |
~ |
5.2~6.2 |
0.06 |
~ |
0.05 |
0.15 |
Remainder |
|
Alloy |
Alloy series |
Main features |
σb Value/MPa |
Work Temperature/℃ |
|
7475 |
7075 series |
The 7475 aluminum alloy sheet is supplied with O, T6 and T76, and the thick plate is supplied with T651, T7651 and T7351. Compared with the state of T76 and T6, the corrosion resistance, especially the anti peeling corrosion resistance, was improved, but the strength was reduced. Compared with the state of T7651 and T651, the resistance to peeling corrosion and stress corrosion resistance is improved, and the fracture toughness is improved, but the strength is reduced. |
448～538 |
<125 |
|
Tensile mechanical properties of7475 T651 T7651 T7351 aluminum alloy sheet |
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|
Technical standard |
Type |
Temper |
Thickness δ/mm |
RMm/MPa |
RP0.2/MPa |
A10/ |
|
Q/6S 790 |
Aluminum sheet |
O |
1.0～1.6 |
<250 |
<140 |
10 |
|
>1.6 |
<250 |
<140 |
10 |
|||
|
>4.8 |
<270 |
<145 |
10 |
|||
|
T6 |
1.0～1.6 |
475 |
405 |
9 |
||
|
>1.6 |
485 |
415 |
9 |
|||
|
>4.8 |
495 |
420 |
9 |
|||
|
T76 |
1.0～1.6 |
455 |
380 |
9 |
||
|
>1.6 |
460 |
385 |
9 |
|||
|
>4.8 |
475 |
395 |
9 |
|||
|
Q/6S 829 |
Aluminum sheet |
T6 |
1.0～1.6 |
475 |
405 |
9 |
|
>1.6 |
485 |
415 |
9 |
|||
|
>4.8 |
495 |
420 |
9 |
|||
|
Q/6S 792 |
Aluminum sheet |
T6 |
1.0～1.6 |
455 |
380 |
9 |
|
>1.6 |
460 |
385 |
9 |
|||
|
>4.8 |
475 |
395 |
9 |
|||
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Mechanical properties of 7475 T651 T7651 T7351 aluminum alloy sheet |
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|
Standard |
Temper |
Thicknessδ/mm |
Direction |
RMm/MPa |
RP0.2/MPa |
A10/ |
|
Q/6S 830 |
T651 |
6.5～12.5 |
L |
531 |
462 |
9 |
|
LT |
538 |
462 |
9 |
|||
|
>12.5 |
L |
531 |
469 |
8 |
||
|
LT |
538 |
469 |
8 |
|||
|
>25.4 |
L |
524 |
462 |
6 |
||
|
LT |
531 |
462 |
6 |
|||
|
Q/6S 831 |
T7651 |
6.5～12.7 |
L |
483 |
414 |
9 |
|
LT |
490 |
414 |
9 |
|||
|
>12.7 |
L |
476 |
407 |
8 |
||
|
LT |
483 |
407 |
8 |
|||
|
>25.4 |
L |
476 |
407 |
6 |
||
|
LT |
483 |
407 |
6 |
|||
|
Q/6S 791 |
T7351 |
6.5～38.0 |
L |
469 |
393 |
10 |
|
LT |
469 |
393 |
9 |
|||
|
38.0 |
L |
469 |
393 |
10 |
||
|
LT |
469 |
393 |
9 |
|||
|
ST |
441 |
365 |
4 |
|||
|
>38.0 |
L |
462 |
379 |
40 |
||
|
LT |
462 |
379 |
8 |
|||
|
ST |
441 |
359 |
4 |
|||
|
Alloy |
Temper |
Aircraft model |
Application parts and typical parts |
|
7475 |
Aluminum sheet： O、T6、T76 Aluminum plate： T651、T7651、T7351 |
Y8， Y12，J6，J7，J8 etc. |
Panels, beams, frames, wing ribs, joints, etc. |
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