Magnesium alloy AZ91D is the most widely used magnesium die-casting alloy, with good mechanical properties,Excellent corrosion resistance and castability.
Chemical Composition
| Element | Content (%) |
| Aluminum, Al | 8.3-9.7 |
| Manganese, Mn | 0.15-0.50 |
| Zinc, Zn | 0.35-1 |
| Silicon, Si | 0.1 |
| Copper, Cu | 0.03 |
| Iron, Fe | 0.005 |
| Nickel, Ni | 0.002 |
| Others, each max | 0.02 |
| Magnesium, Mg | Remainder |
Physical Properties
| Properties | Metric | Imperial |
| Density | 1.81 g/cm3 | 1.046 lb/in3 |
Mechanical Properties
| Properties | Metric | Imperial |
| Tensile strength | 240-250 MPa | 35-36 ksi |
| Yield strength | 160 MPa | 23.20 ksi |
| Elastic modulus | 45 GPa | 6526 ksi |
| Elongation | 3-7 % | 3-7 % |
| Hardness | 63 | 63 |
Thermal Properties
| Properties | Metric | Imperial |
| Thermal expansion co-efficient (at 20-100°C/68-212°F) | 26 µm/m°C | 14.4 µin/in°F |
| Thermal conductivity (at 20°C/68°F) | 72.7 W/mK | 504 BTU in/hr.ft².°F |
Application
Due to the light weight, good strength of magnesium alloy, more and more products are now manufactured by magnesium alloy, as follows
Covers
Housings
Handheld tools
Sporting goods
Computer parts
Mobile and telephones
Household equipment
Automobile components.
Process
Several processing processes of magnesium alloy AZ91D, which is made of magnesium aluminum zinc alloy as the main component of the material, its production process are: casting, extrusion, rolling, forging, die-casting, etc.
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