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) | 10,700 | ksi | 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) | 3,000 | ksi | 22°C · Extrusion | ||
S–N Curve (Wöhler)(S–N) | Curve (40 pts) | ksi | 21°C · L | ||
Ultimate Tensile Strength(σUTS)2 entries | 86.00 | ksi | 22°C · Die forging · T66 · AMS 4148 · L · t=≤3.000 in | ||
| ↳ | 77.00 | ksi | 22°C · Die forging · T66 · AMS 4148 · LT · t=≤3.000 in | ||
Yield Strength (0.2% offset)(σy)2 entries | 76.00 | ksi | 22°C · Die forging · T66 · AMS 4148 · L · t=≤3.000 in | ||
| ↳ | 66.00 | ksi | 22°C · Die forging · T66 · AMS 4148 · LT · t=≤3.000 in | ||
Young's Modulus(E) | 10,200 | ksi | 22°C · Die forging |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.1010 | lb/in³ | 22°C |