HK31A-O
Material Data Sheet
Magnesium HK31A alloy series are known to possess good castability, pressure tightness, and creep resistant to 350°C (662°F).
Chemical Composition
| Element | Content (%) |
|---|---|
| Magnesium, Mg | 96.0 |
| Thorium, Th | 2.5 – 4.0 |
| Zirconium, Zr | 0.4 – 1.0 |
| Zinc, Zn | ≤ 0.30 |
| Copper, Cu | ≤ 0.1 |
| Nickel, Ni | ≤ 0.01 |
Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 1.80 g/cm³ | 0.065 lb/in³ |
| Melting Point | 590 – 6520 °C | 1090 – 1200 °F |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile Strength, Ultimate | 200 MPa | 29000 psi |
| Tensile Strength, Yield | 120 MPa | 17400 psi |
| Elongation at Break | 30% | 30% |
| Tensile Modulus | 45.0 GPa | 6530 ksi |
| Compressive Yield Strength | 97.0 MPa | 14100 psi |
| Poissons Ratio | 0.35 | 0.35 |
| Machinability | 100% | 100% |
| Shear Modulus | 17.0 GPa | 2470 ksi |
| Charpy Impact | 3.40 J | 2.51 ft-lb |
