7085 Aircraft Aerospace Grade Aluminum Plate Sheet

7085 aluminum alloy is the latest generation of advanced aluminum alloy developed by Alcoa in the United States in 2002. 7085 Aircraft aerospace grade aluminum plate sheet has high hardenability, high strength, high damage tolerance and has a major application background in large aircraft and other fields. But its The corrosion resistance is not ideal, which will inevitably affect the safe application of Al-Zn-Mg-Cu aluminum alloys. Aviation structural materials have a long contact time with corrosive media in the atmosphere, and in long-distance flight, the environment is relatively harsh and corrosion resistance It is an important indicator for investigating aluminum alloys for aviation. 7085 aluminum alloy forgings are mainly used for load-bearing structural parts such as wing spars, wing ribs and landing gears of Airbus A380, which in turn requires them to have high strength. The 7085 aircraft aerospace grade aluminum plate sheet produced by Chalco Aluminum resolves the contradiction between the strength and corrosion resistance of 7085 aluminum alloy through the microalloying design, combined with the combined deformation method and heat treatment process.

Application of 7085 aluminum alloy

Application of 7085 aluminum alloy

Chemical Composition of 7085 Alloy

Alloy

Si

Fe

Cu

Mn

Mg

Cr

Ni

Zn

Ti

Zr

Others

Al

Each

Total

7085

0.12

0.15

1.5~2.0

0.1

2.1~2.6

0.05

0.05

5.7~6.7

0.05

0.10~0.16

0.05

0.15

Remainder

Alloy

Alloy series

Main features

Σb Value/MPa

Work Temperature/℃

7085

New type alloy

A kind of high strength and high hardenability forging aluminum alloy has been developed since 1990s. 7085 alloy heavy forgings can solve the contradiction between specification hardenability, performance and residual internal stress, and have excellent comprehensive properties, especially in fracture toughness, without the influence of thickness.

510

<125

Physical Property of 7010 Alloy

Alloy

Type

Temper

Size/mm

Direction

σb/MPa

σp 0.2/MPa

δ %

KIC OR KC

7085

Aluminum plate

T7651

δ101.62~127.00

L

510

476

7

LT

503

462

5

ST

483

434

3

δ127.02~152.40

L

510

476

7

LT

503

462

4

ST

483

434

3

Δ152.42~177.80

L

503

469

6

LT

503

448

3

ST

476

434

3

Alloy

Temper

Aircraft models

Application parts and typical parts

7085

Aluminum plate:  T7651

A380

Wing beam

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