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| PRODUCT DATA of AA2024-T81 |
| Material | AA2024-T81 |
| Product Type | Plate |
| Chemical Composition | 4.5% Cu, 1.5% Mg, 0.6% Mn, Rem. Al |
| Name of Manufacturer | Corus |
| EXPERIENCE IN PRACTICE |
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| Development Status | Commercial Product |
| Cost Range | Very Low |
| Equivalent Designations | Aluminium-Copper Alloy (ISO AlCu4Mg1), BS L97, BS L98, AFNOR A-U4G1, DIN 1725, AA 2024 |
| Space Experience | Good |
| PHYSICAL PROPERTIES |
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| Crystal Structure | Face centered cubic (fcc) |
| Specific Gravity | 2.77 |
| Magnetic Properties | Nonmagnetic |
| MECHANICAL PROPERTIES |
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| Ultimate Tensile Strength | 462 MPa(minimum) |
| Proof Stress (0.2%) | 400 MPa(minimum) |
| Elongation | 5 %(minimum) |
| 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: acc. to ECSS-Q-ST-70-36C Data Quality: Design Data |
| EMF vs SCE | -0.71 V |
| Bimetallic Corrosion | Can be used in a non-controlled environment with: Al+alloys, Cd, Sn-Pb alloys, Sn, Pb Can be used in a clean room environment with: as above and Mg, Ni, Monel, Inconel, Ni-Mo alloys, 300 series SS, 400 series SS, Ti and Ti alloys, 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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| Special Recommendations | For precipitation hardened parts, heating above the precipitation temperature may result in susceptibility to intergranular and stress corrosion. · The room-temperatureaged conditions may become susceptible to intergranular corrosion if the alloy is heated above 65°C. |