Aluminum alloys
7175
Spécifications
EU
Al 5,6Zn-2,5Mg-1,6Cu-0,23Cr
USA
UNS: A97175
Composition
Cr
0.23
Al
Base
Cu
1.6
Mg
2.5
Zn
5.6
Applications
• Forged bars and medium sized openor closed-die forgings, used in the production of structural components for aerospace where high mechanical strength is required.
Characteristics
• This alloy achieves a good balance between mechanical properties (strength, toughness and fatigue) and stress corrosion resistance for thicknesses ≤ 100mm.
• As its hardenability is not very high, grades 7010 or 7050 would be preferred where greater thicknesses are involved.
Mechanical properties
| Heat treatment |
UTS (N/mm²) |
0,2% YS (N/mm²) |
A (%) |
|---|---|---|---|
| T 7352 - T 7354 conditions | > 455 | > 370 | > 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 |