| All data is for information only------(Home) | |
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| PRODUCT DATA of AA7475-T76 |
| Material | AA7475-T76 |
| Product Datasheet | Alcoa 7475 plate and sheet |
| Processing and Assembly | Solution heat treated and then artificially overaged in order to achieve a good exfoliation corrosion resistance. |
| EXPERIENCE IN PRACTICE |
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| Development Status | Commercial Product |
| Equivalent Designations | AA 7475 |
| PHYSICAL PROPERTIES |
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| Crystal Structure | Face centered cubic (fcc) |
| Specific Gravity | 2.81 |
| Magnetic Properties | Nonmagnetic |
| THERMAL PROPERTIES |
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| Thermal Conductivity | 147 W/m.K |
| Thermal Expansion Coefficient | 23.2 μstrain/°C |
| Melting Range | 477 to 635 °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 where the Zn content is at the high end of the composition range, this alloy responds poorly to black anodising. |