7075 Aircraft Aerospace Grade Aluminum Plate Sheet

The main alloying element of 7075 is zinc, which has strong strength, good mechanical properties and anode reaction. 7075 aircraft aerospace grade aluminum plate sheet is mainly used to manufacture aircraft structures and other high-stress structural parts that require high strength and corrosion resistance, such as aircraft upper and lower wing panels, stringers, etc. After solution treatment, the plasticity is good, the heat treatment strengthening effect is good, it has good strength below 150 degrees, and has particularly good low temperature strength, poor welding performance, and stress corrosion cracking tendency. It is also widely used in mold processing, mechanical equipment, fixtures, etc.

7075 alloy has excellent low temperature strength

7075 alloy has excellent low temperature strength

Chemical Composition of 7075 alloy

Alloy

Si

Fe

Cu

Mn

Mg

Cr

Ni

Zn

Ti

Zr

Others

Al

Each

Total

7075

0.40

0.50

1.2~2.0

0.3

2.1~2.9

0.18~0.28

~

5.1~6.1

0.20

~

0.05

0.15

Remainder

Alloy

Alloy Series

Main features

σb  Value/MPa

Working Temperature/℃

7075

7075 series

7075 T6 T62 T7351 aluminum alloy plate sheet is currently the most widely used 7 * * * aviation Aluminum Alloy, main supply varieties of aluminum or aluminum, heat treatment condition of O, T6, T73, T76. The static strength of T6 is the highest, the ductility is the lowest and the fatigue is the worst. It is sensitive to stress corrosion cracking, and toughness decreases with the decrease of temperature. So the T6 state is not applied to cryogenic working parts. T73 has the lowest state strength, but has high fracture toughness and excellent resistance to stress corrosion cracking and denudation. The performance of T76 is between T6 and T73. Compared with T6 state, it has low strength but good resistance to stress corrosion. Compared with T73 state, its strength is high, but its stress corrosion resistance is poor.

421~538

<125

Alloy

Type

Temper

Size/mm

Direction

σb/MPa

σp 0.2/MPa

A

B

A

B

7075

Aluminum sheet

T6

T62

δ0.305~0.991

L

524.4

538.2

476.1

496.8

LT

524.4

538.2

462.3

483.0

δ1.016~3.175

L

538.2

552.0

483.0

496.8

LT

538.2

552.0

469.2

483.0

δ3.200~6.325

L

538.2

552.0

489.9

503.7

LT

538.2

552.0

476.1

489.9

δ6.35~12.675

L

510.6

524.4

448.5

462.3

LT

538.2

538.2

462.3

476.1

δ12.7~25.4

L

510.6

524.4

455.4

469.2

LT

538.2

552.0

469.2

483.0

δ25.425~50.8

L

503.7

517.5

441.6

448.5

LT

531.3

545.1

462.3

476.1

δ50.825~63.5

L

496.8

510.6

414.0

427.8

LT

524.4

538.2

441.6

455.4

ST

483.0

489.9

407.1

420.9

δ63.525~76.2

L

476.1

489.9

386.4

400.2

LT

489.9

503.7

400.2

414

ST

455.4

469.2

386.4

400.2

δ76.225~88.9

L

469.2

483.0

358.8

372.6

LT

489.9

503.7

400.2

414.0

ST

448.5

462.3

372.6

379.5

δ88.9~101.6

L

441.6

455.4

331.2

338.1

LT

462.3

476.1

372.6

386.4

ST

420.9

434.7

345.0

358.8

T7351

δ12.7~25.4

L

469.2

483.0

393.3

407.1

LT

476.1

489.9

393.3

407.1

δ25.425~38.1

L

462.3

476.1

393.3

407.1

LT

469.2

483.0

393.3

407.1

δ38.125~50.8

L

455.4

469.2

379.5

393.3

LT

462.3

476.1

379.5

393.3

ST

434.7

448.5

358.5

372.6

δ50.825~63.5

L

448.5

462.3

358.8

372.6

LT

455.4

469.2

365.7

379.5

ST

427.8

441.6

338.1

358.8

δ63.525~76.2

L

437.7

448.5

338.1

365.7

LT

448.5

455.4

358.8

365.7

ST

414.0

427.8

324.3

345.0

Alloy

Temper

Aircraft models

Application parts and typical parts

7075

Aluminum sheet: T6、T62、T7351

Aluminum plate:  T6、T62、T7351

Widely used

Panels, beams, frames, wing ribs, joints, etc.

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