7175 aluminum alloy (Zn-Mg-Cu system) in T66 temper is a high-strength aerospace alloy combining solution heat treatment, controlled stretching, and artificial aging to achieve maximum yield strength with improved stress-corrosion cracking resistance compared to T73 variants. Primary applications include aircraft structural components and highly stressed forgings requiring tensile strengths exceeding 500 MPa with enhanced resistance to sustained-load cracking in marine and humid environments.
Compliance & Regulations
1 interactive curve for this material
Stress-strain, S-N fatigue and environmental knockdown curves are free with an account.
Create free account| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Modulus(Ec) | 73.77 | GPa | 22°C · Die forging | ||
Elongation at Break(εf)2 entries | 7.000 | - | 22°C · Die forging · T66 · AMS 4148 · L · t=≤3.000 in | ||
| ↳ | 4.000 | - | 22°C · Die forging · T66 · AMS 4148 · LT · t=≤3.000 in | ||
Poisson's Ratio(ν) | 0.3300 | - | 22°C | ||
Shear Modulus(G) | 20.68 | GPa | 22°C · Extrusion | ||
S–N Curve (Wöhler)(S–N) | Curve (40 pts) | Pa | 21°C · L | ||
Ultimate Tensile Strength(σUTS)2 entries | 592.9 | MPa | 22°C · Die forging · T66 · AMS 4148 · L · t=≤3.000 in | ||
| ↳ | 530.9 | MPa | 22°C · Die forging · T66 · AMS 4148 · LT · t=≤3.000 in | ||
Yield Strength (0.2% offset)(σy)2 entries | 524.0 | MPa | 22°C · Die forging · T66 · AMS 4148 · L · t=≤3.000 in | ||
| ↳ | 455.1 | MPa | 22°C · Die forging · T66 · AMS 4148 · LT · t=≤3.000 in | ||
Young's Modulus(E) | 70.33 | GPa | 22°C · Die forging |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 2.796 | kg/m³ | 22°C |