Aluminum alloys

7020

Spécifications

EU
Al Zn4,5Mg1
USA
UNS: A97020
ISO Symbol
Al Zn4,5Mg1

Composition

Cr
0.22
Mn
0.25
Al
Base
Mg
1.20
Zn
4.5

Applications

• Closed-die forgings and forged bars for nuclear, space and defence industries.

Characteristics

• Good weldability.
• Average mechanical strength.
• Good balance between toughness and stress corrosion resistance.
• This alloy is similar to Grade 7005.

Mechanical properties

Heat
treatment
UTS
(N/mm²)
0,2%
YS
(N/mm²)
A
(%)
T 6 condition thickness < 100 mm > 350 > 280 > 10
T 652 condition thickness 100/200 mm> 340> 275> 10

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

2024

Aluminum alloys

7050

Aluminum alloys

7010

Aluminum alloys