| ASTM AZ81A-T4 | |
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| Category | Magnesium Alloy |
| Designations | United States: UNS S21900, ASTM A276, ASTM A580, ASTM A412 |
| Composition | |
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| Mechanical Properties | |
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| Properties | Conditions | ||
| T (°C) | Treatment | ||
| Density (×1000 kg/m3) | 1.8 | 25 | |
| Poisson's Ratio | 0.35 | 25 | |
| Elastic Modulus (GPa) | 44.8 | 25 | |
| Tensile Strength (Mpa) | 275.0 | 25 | T4 (sand casting, permanent mold casting) |
| Yield Strength (Mpa) | 83.0 | ||
| Elongation (%) | 15.0 | ||
| Reduction in Area (%) | |||
| Hardness (HB500) | 55 | 25 | T4 (sand casting, permanent mold casting) |
| Shear Strength (MPa) | 125 | 25 | T4 (sand casting, permanent mold casting) |
| Thermal Properties | |
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