Aluminum alloys

7050

Spécifications

EU
Al Zn6CuMgZr
USA
UNS: A97050
ISO Symbol
Al Zn6CuMgZr
WL
3.4144

Composition

Al
Base
Cu
2.3
Mg
2.30
Zr
0.12
Zn
6.2

Applications

• Closed-die forgings and large forged bars for the aerospace industry.
• This alloy has been specifically designed for structural components subject to high fatigue stress and the risk of corrosion.

Characteristics

• This alloy used in the over-aged T74 condition achieves a good balance between mechanical properties (strength, toughness and fatigue) and stress corrosion resistance.
• In the over-aged T76 condition, it is particularly resistant to exfoliation corrosion.
• Its good hardenability makes it suitable for producing thick parts.

Mechanical properties

Heat
treatment
UTS
(N/mm²)
0,2%
YS
(N/mm²)
A
(%)
T 7452 condition thickness 150/175 mm > 469 > 400 > 9
T 74 condition thickness 100/125 mm> 483> 414> 7

Key to heat treatment symbols

Solution treated H Annealed R
Thermo-mechanical treatment TM Quenched and tempered T+RV
Sub-zero treatment F Solution treated and aged H+V

See also

7010

Aluminum alloys

2050

Aluminum alloys