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| PRODUCT DATA of AA7050-T736 |
| Material | AA7050-T736 |
| General Information | Aluminium-Zinc-Copper-magnesium Alloy which has a good combination of strength, fracture toughness and corrosion resistance |
| Product Type | Die forging |
| Chemical Composition | Al-6.2Zn-2.25Mg-2.3Cu-0.12Zr |
| EXPERIENCE IN PRACTICE |
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| Development Status | Commercial Product |
| Cost Range | Low |
| Equivalent Designations | AA 7050, UNS A97050 |
| PHYSICAL PROPERTIES |
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| Crystal Structure | Face centered cubic (fcc) |
| Magnetic Properties | Nonmagnetic |
| ELASTIC PROPERTIES |
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| Tensile Modulus | 70.3 GPa |
| MECHANICAL PROPERTIES |
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| Ultimate Tensile Strength | 455 to 496 MPa |
| Proof Stress (0.2%) | 372 to 427 MPa |
| Elongation | 3 to 7 % |
| Shear Strength | 283 to 328 MPa |
| THERMAL PROPERTIES |
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| Thermal Conductivity | 154 W/m.K @ Room temperature |
| Melting Range | 488 to 629 °C |
| RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY |
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| General Corrosion Status | Requires specific corrosion protection |
| Stress Corrosion Status |
Moderate Resistance to SCC: Table 2 Remark: Requires Stress corrosion evaluation form Data Quality: Design Data |
| Bimetallic Corrosion | Can be used in a non-controlled environment: Al alloys, Cd Can be used in a clean room environment: Mg, Sn-Pb alloys (all), Sn, Pb, Zn, Be Needs specific measures: All others Test:ECSS-Q-ST-70C Rev.1 Table 5.1 Data Quality: Design Data |
| SPECIAL RECOMMENDATIONS |
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| Lessons Learned | In some cases, this alloy responds poorly to black anodising |