7A04 Aircraft Aerospace Grade Aluminum Plate Sheet

7A04 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, tooling and fixtures, aerospace industry, blow molding (bottle) molds, ultrasonic plastic welding molds, golf heads, shoe molds, paper molds, foam molding molds, dewaxing molds, machinery Equipment for making high-end aluminum alloy bicycle frames.

7A04 aerospace grade aluminum plate for aircraft structure

7A04 aerospace grade aluminum plate for aircraft structure

Chemical composition of 7A04 alloy

Alloy

Si

Fe

Cu

Mn

Mg

Cr

Ni

Zn

Ti

Zr

Others

Al

Each

Total

7A04

0.50

0.50

1.4~2.0

0.20~0.60

1.8~2.8

0.15~0.25

5.0~7.0

0.05

0.15

Remainder

Alloy

Alloy series

Mean features

σb  Value/MPa

Working temperature/℃

7A04

B95(Russia)

The yield strength to tensile strength, low ductility, sensitivity to stress concentration effects, especially the repeated static load under vibration load and the situation is more obvious, therefore need to strictly avoid stress concentration factor and the formation of additional stress in parts of the design, manufacture and assembly process. The short transverse stress corrosion resistance of the thick and large parts of the alloy is poor. There are mainly plate and extrusion parts.

480~570

<125

Physical Property of 7A04 Aluminum alloy plate sheet profile forgings

Alloy

Type

Temper

δ size/mm

Direction

σb/MPa

σp 0.2/MPa

δ %

Standard

7A04

Aluminum

Plate

T6

1.0~2.5

LT

480

410

7

GJB 2053-1994

>2.5

LT

490

420

7

T9

2.0~4.0

LT

520

450

7

T6

7.0~10.0

L

490

410

6

GJB 2662-1996

>10~25

L

490

410

4

>25~40

L

490

410

3

Alloy

Temper

Aircraft type

Application parts and typical parts

7A04

7A04 Aircraft aerospace grade aluminum plate sheet:  T6,T9

Y8, Y12

Skin, wall board, all kinds of beams (backlog, forgings), frame, fin, long truss, joint, landing gear and so on.

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