7050 Aircraft Aerospace Grade Aluminum Plate Sheet

7050 is a high-strength heat-treatable alloy with extremely high strength and resistance to drop corrosion and stress corrosion cracking. 7050 aircraft aerospace grade aluminum plate sheet commonly used in aircraft structural parts for medium and thick plate kneading parts, free forging parts and die forging parts. The requirements of the alloy for the production of such parts are: drop corrosion resistance and stress corrosion cracking resistance, cracking toughness and fatigue resistance. High strength heat treated alloy

High strength heat treated alloy

Chemical Composition of 7050 Alloy

Alloy

Si

Fe

Cu

Mn

Mg

Cr

Ni

Zn

Ti

Zr

        Others

Al

Each

Total

7050

0.12

0.15

2.0~2.6

0.1

1.9~2.6

0.04

~

5.7~6.7

0.06

0.08~0.15

0.05

0.15

Remainder

Alloy0

Alloy series

Main features

Σb Value/MPa

Working temperatue/℃

7050

7050 series

7050, it is one of the most widely used and comprehensive high strength aluminum alloys. It has high strength, high resistance to stress corrosion cracking and good fracture toughness. The main varieties are thick plates, profiles and forgings. The 7050 thick plate has two kinds of use state T7651 and T7451. T7651 has good anti peeling corrosion performance and medium stress corrosion resistance, and has high static strength. T7451 has the best anti stripping corrosion ability, and the ability to resist stress corrosion is also better than T7651, but the strength is slightly lower. At present, the short transverse properties of the 7050 Alloy thick plate have been further improved.

495~530

<125

Physical Properties of 7050 Alloy

Alloy

Type

Temper

Specifications/mm

Direction

σb/MPa

σp 0.2/MPa

A

B

A

B

7050

Aluminum sheet

T7451

δ6.35~38.1

L

217.6

524.4

448.5

462.3

LT

510.6

524.4

441.6

455.4

δ38.125~76.2

L

510.6

524.4

448.5

455.4

LT

517.5

524.4

441.6

455.4

δ76.225~101.6

L

510.6

517.5

448.5

455.4

LT

510.6

517.5

441.6

455.4

ST

469.2

496.8

407.1

414.0

δ101.625~127

L

496.8

503.7

427.8

448.5

LT

496.8

510.6

420.9

441.6

ST

462.3

476.1

400.2

414.0

δ127.025~152.4

L

489.9

496.8

414.0

434.7

LT

483.0

503.7

414.0

427.8

ST

455.4

476.1

393.3

393.3

T7651

δ25.425~38.1

L

531.3

552.0

462.3

489.9

LT

524.4

545.1

455.4

483.0

δ38.125~50.8

L

524.4

538.2

455.4

483.0

LT

517.5

538.2

448.5

476.1

ST

496.8

517.5

407.1

434.7

δ50.825~63.5

L

517.5

538.2

455.4

483.0

LT

517.5

538.2

448.5

476.1

ST

483.0

503.7

414.0

427.8

Aluminum profile

T76511

δ≤12.675

L

531.3

545.1

469.2

489.9

LT

524.4

538.2

462.3

476.1

Free aluminum forgings

T7452

δ152.425~177.8

L

469.2

489.9

386.4

420.9

LT

462.3

483

386.4

407.1

ST

448.5

476.1

358.8

386.4

Alloy

Temper

Aircraft models

Application parts and typical parts

7050

Aluminum plate:  T7651、T7451

Aluminum profile: T76511

Free aluminum forgings:7452

Widely used abroad, domestic ARJ21 and so on

For thick section of main structure of high load, such as the manufacture of fuselage frame and bulkhead, wing skin stiffener, extrusion, Stringer, reinforcing rib, forging parts, gear parts, supporting beam, wall, flange, important joints etc..

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