Magnesium AZ92A-T7 (UNS M11920)
AZ92A-T7 is a magnesium alloy that is commonly used in sand and permanent-mold castings. It has high tensile strength and good yield strength, making it suitable for applications where strength and lightweight are important.
Chemical Composition | ||
---|---|---|
Element | Min | Max |
Magnesium | Remainder | |
Aluminum | 8.3% | 9.7% |
Copper | 0.25% | |
Manganese | 0.10% | |
Nickel | 0.01% | |
Silicon | 0.30% | |
Zinc | 1.6% | 2.4% |
The following table provides a list of magnesium AZ92A-T7 properties in both SI and US customary/Imperial units.
Click on the icon to switch between Metric and Imperial units.
Physical Properties | Metric |
---|---|
Density | 1830 kg/m3 |
Mechanical Properties | Metric |
Tensile Strength (Ultimate) | 275 MPa |
Tensile Strength (Yield) | 145 MPa |
Fatigue Strength # of Cycles 5.0e+8 | 90 MPa |
Shear Strength | 150 MPa |
Young’s Modulus (E) | 45 GPa |
Shear Modulus (G) | 17 GPa |
Elongation at Break in 50 mm | 3% |
Poisson’s Ratio (ν) | 0.35 |
Brinell Hardness 500 kg load, 10 mm ball | 78 |
Knoop Hardness Converted from Brinell | 101 |
Rockwell Hardness | 86 |
Vickers Hardness Converted from Brinell | 88 |
Machinability | 100% |
Thermal Properties | Metric |
Melting Point Incipient Melting | ≥ 410 °C |
Solidus | 445 °C |
Liquidus | 595 °C |
Thermal Conductivity (T6 Temper) | 58.3 W/m·K |
Specific Heat Capacity (Cp) | 1050 J/kg·K |
Coefficient of Thermal Expansion (αL) | 26.0 1/°C |
Heat of Fusion | 373 J/g |
Electrical Properties | Metric |
Electrical Resistivity (T6 Temper) | 1.24×10-5 Ω·cm |
The values in this table are approximate and can vary depending on various factors such as the specific manufacturing process and heat treatment applied to the alloy.
Advantages & Disadvantages of Magnesium AZ92A-T7
Advantages | Disadvantages |
---|---|
High strength | Corrosion-prone |
Good machinability | Low melting point |
Lightweight | High cost |
Applications of Magnesium AZ92A-T7
Magnesium AZ92A-T7 is a versatile alloy with a wide range of applications. Some applications of Magnesium AZ92A-T7 include:
- Automotive: Engine blocks, transmission housings, suspension components, brake rotors, wheels
- Aerospace: Aircraft bodies, engine parts, rocket casings, satellite bodies
- Construction: Building frames, roofing panels, windows and doors, staircases
- Marine: Boat hulls, propellers, rudders, lifeboats
- Electronics: Laptop frames, cellphone cases, computer monitors, televisions
- Other: Bicycle frames, golf clubs, musical instruments, sporting goods, medical devices