AZ31B
UNS M11311
Description
Magnesium alloy AZ31B is one of the most popular magnesium alloys with aluminum. It is known for its excellent mechanical properties, including tensile strength, yield strength, elongation value, reduction area percentage, and impact energy values. This alloy also has a high level of corrosion resistance due to its ability to form a protective oxide layer when exposed to air or water. In addition, it exhibits good welding characteristics with traditional welding methods such as TIG and MIG welding. Due to these excellent properties, AZ31B alloys offer considerable potential for the aircraft manufacturing industry, as well as the automotive industry and medical industry.
General Information
| Items | AZ31B-O | AZ31B-H26 |
|---|---|---|
| Catalog | ACAM-Mg-A001 | ACAM-Mg-A002 |
| Density | 1.77 g/cm3 | 1.77 g/cm3 |
| Melting Range | 605-630 °C | 605-630 °C |
| Remark | in the annealed condition | obtained by strain hardening and partial annealing |
Chemical Component
| Mg | Al | Zn | Mn | Si | Cu | Ca | Fe | Ni |
|---|---|---|---|---|---|---|---|---|
| 96.0 min | 2.5-3.5 | 0.6-1.4 | 0.20 max | 0.10 max | 0.05 max | 0.04 max | 0.005 max | 0.005 max |
* Unit: %
Typical Mechanical Properties
| Items | AZ31B-O | AZ31B-O |
|---|---|---|
| Tensile Strength, Ultimate | 255 MPa | 275 MPa |
| Tensile Strength, Yield | 150 MPa | 190 MPa |
| Elongation at Break | 21% | 10% |
| Tensile Modulus | 45.0 GPa | 45 GPa |
| Compressive Yield Strength | 110 MPa | 130 MPa |
| Ultimate Bearing Strength | 485 MPa | 495 MPa |
| Bearing Yield Strength | 290 MPa | 275 MPa |
| Poisson's Ratio | 0.35 | 0.35 |
| Fatigue Strength | 120 – 145 MPa | -- |
| Machinability | 100% | 100% |
| Shear Modulus | 17.0 GPa | 17 GPa |
| Shear Strength | 145 MPa | 190 MPa |
Material Forms
Alfa Chemistry offers magnesium alloy AZ31B in a variety of forms, including Plate, Tooling Plate, Sheet, Rod and Bar.
Applications
Forgings in AZ31B find application in high strength parts for:
- Aircraft Fuselage
- Textile Machinery
- Cell phones and camera cases
- Concrete Tools
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
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