AZ31B-O
Material Data Sheet
AZ31B-O magnesium is AZ31B magnesium in the annealed condition. It has the lowest strength and highest ductility compared to the other variants of AZ31B magnesium.
Chemical Composition
| Element | Content (%) |
|---|---|
| Magnesium, Mg | 96.0 |
| Aluminum, Al | 2.5 – 3.5 |
| Zinc, Zn | 0.6 – 1.4 |
| Manganese, Mn | ≤ 0.20 |
| Silicon, Si | ≤ 0.10 |
| Copper, Cu | ≤ 0.05 |
| Calcium, Ca | ≤ 0.04 |
| Iron, Fe | ≤ 0.005 |
| Nickel, Ni | ≤ 0.005 |
Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 1.77 g/cc | 0.0639 lb/in³ |
| Melting Point | 605 – 630 °C | 1120 – 1170 °F |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Brinell | 56 | 56 |
| Hardness, Knoop | 71 | 71 |
| Hardness, Vickers | 83 | 83 |
| Tensile Strength, Ultimate | 255 MPa | 37000 psi |
| Tensile Strength, Yield | 150 MPa | 21800 psi |
| Elongation at Break | 21% | 21% |
| Tensile Modulus | 45.0 GPa | 6530 ksi |
| Compressive Yield Strength | 110 MPa | 16000 psi |
| Ultimate Bearing Strength | 485 MPa | 70300 psi |
| Bearing Yield Strength | 290 MPa | 42100 psi |
| Poissons Ratio | 0.35 | 0.35 |
| Fatigue Strength | 120 – 145 MPa | 17400 – 21000 psi |
| Machinability | 100% | 100% |
| Shear Modulus | 17.0 GPa | 2470 ksi |
| Shear Strength | 145 MPa | 21000 psi |
Applications
Forgings in AZ31B-O find application in high strength
parts for:
- Aircraft Fuselage
- Cell phones and camera cases
- Textile Machinery
- Concrete Tools
