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Aluminum 7075
| Category | Property | Metric | English | Notes |
|---|---|---|---|---|
| Chemical Composition | Aluminum (Al) | 87.1 - 91.4% | - | Remainder |
| Chromium (Cr) | 0.18 - 0.28% | - | - | |
| Copper (Cu) | 1.2 - 2.0% | - | - | |
| Zinc (Zn) | 5.1 - 6.1% | - | - | |
| Magnesium (Mg) | 2.1 - 2.9% | - | - | |
| Others (each/total) | Max 0.05% / Max 0.15% | - | - | |
| Physical Properties | Density | 2.81 g/cc | 0.102 lb/in³ | Typical |
| Melting Point | 477 - 635 °C | 890 - 1175 °F | Typical range for wrought products | |
| Mechanical Properties | Hardness (Brinell) | 150 | 150 | 500 g load, 10 mm ball |
| Ultimate Tensile Strength | 572 MPa | 83,000 psi | Typical | |
| Tensile Yield Strength | 503 MPa | 73,000 psi | Typical | |
| Elongation at Break | 11% | 11% | 1/16 in. (1.6 mm) thickness | |
| Fatigue Strength | 159 MPa | 23,000 psi | 500,000,000 cycles | |
| Fracture Toughness (K_IC) | 20-29 MPa·m½ | 18.2-26.4 ksi·in½ | Direction-dependent | |
| Thermal Properties | Thermal Conductivity | 130 W/m-K | 900 BTU-in/hr-ft²-°F | Typical at 77°F |
| Specific Heat Capacity | 0.96 J/g-°C | 0.229 BTU/lb-°F | - | |
| Coefficient of Thermal Expansion | 23.6 µm/m-°C | 13.1 µin/in-°F | 68-212°F range | |
| Electrical Properties | Electrical Resistivity | 5.15e-006 ohm-cm | 5.15e-006 ohm-cm | Typical at 68°F |
| Processing Properties | Annealing Temperature | 413 °C | 775 °F | - |
| Solution Temperature | 466 - 482 °C | 870 - 900 °F | - | |
| Aging Temperature | 121 °C | 250 °F | - | |
| Applications | Aerospace and Defense | Aircraft fittings, gears, shafts, missile parts, regulating valve parts | - | Highly stressed structural parts |
| Automotive and Sports | Bike frames, ATV sprockets | - | - | |
| Industrial | Worm gears, keys, meter shafts | - | - |
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