Ultra High Strength • Aircraft Grade • Exceptional Stress Performance
7075-T6 is one of the highest strength aluminum alloys available, with strength comparable to many steels. This zinc-based alloy features excellent fatigue resistance and is extensively used in aerospace, defense, and high-performance structural applications where strength-to-weight ratio is critical.
7075-T6 aluminum is a precipitation-hardened aluminum-zinc alloy that delivers the highest strength among commercial aluminum alloys. The T6 temper indicates solution heat treatment followed by artificial aging, maximizing mechanical properties. With a strength-to-weight ratio superior to many steels, it's the material of choice for critical aerospace and defense applications.
| Element | Weight % | Purpose |
|---|---|---|
| Zinc (Zn) | 5.1 - 6.1 | Primary strengthening element |
| Magnesium (Mg) | 2.1 - 2.9 | Works with Zn for precipitation hardening |
| Copper (Cu) | 1.2 - 2.0 | Enhances strength and hardness |
| Chromium (Cr) | 0.18 - 0.28 | Grain structure control and stress corrosion resistance |
| Iron (Fe) | ≤ 0.50 | Impurity element |
| Silicon (Si) | ≤ 0.40 | Impurity element |
| Manganese (Mn) | ≤ 0.30 | Grain refinement |
| Titanium (Ti) | ≤ 0.20 | Grain refinement |
| Aluminum (Al) | Balance | Base metal |
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength (Ultimate) | 572 MPa | 83,000 psi |
| Yield Strength | 503 MPa | 73,000 psi |
| Elongation at Break | 11% | |
| Modulus of Elasticity | 71.7 GPa | 10.4 × 10⁶ psi |
| Brinell Hardness | 150 HB | |
| Shear Strength | 331 MPa | 48,000 psi |
| Fatigue Strength (500M cycles) | 159 MPa | 23,000 psi |
| Shear Modulus | 26.9 GPa | 3.9 × 10⁶ psi |
Note: Properties shown are typical values for T6 temper (solution heat treated and artificially aged). Actual values may vary based on form, thickness, and processing history.
Aircraft structural components, wing spars, fuselage frames, missile parts, satellite components, spacecraft structures, and critical high-stress aerospace applications.
High-performance bicycle frames, motorcycle parts, racing car components, high-stress automotive parts, and performance vehicle suspensions.
Rock climbing equipment (carabiners, ascenders), ski poles, baseball bats, lacrosse sticks, archery equipment, and competitive sports gear.
Mold tool manufacturing, precision jigs and fixtures, high-strength gears, structural components for equipment, and tooling plates.
Worm gears for electronics, precision components requiring high strength, electronic enclosures for harsh environments, and telecommunication hardware.
| Operation | Recommended Parameters |
|---|---|
| Turning | Speed: 600-900 SFM (180-275 m/min), Feed: 0.005-0.015 ipr |
| Milling | Speed: 800-1200 SFM (245-365 m/min), Carbide tooling recommended |
| Drilling | Speed: 200-300 SFM (60-90 m/min), Use coolant, peck drilling for deep holes |
| Threading | Reduced speeds, generous coolant, sharp tools critical |
| Coolant | Mineral oil, soluble oil, or synthetic coolants recommended |
Pro Tip: 7075-T6 machines best with positive rake angles and plenty of coolant. Watch for built-up edge on cutting tools and adjust speeds if necessary.
Get a quote for AS9100D certified 7075-T6 aluminum machining with full material traceability and certification.