Magnesium QE22A-T6 (UNS M18220)
Magnesium QE22A-T6 is a heat-treated alloy known for its high strength and exceptional mechanical properties, including tensile, fatigue, and creep resistance at room and elevated temperatures. It is widely used in sand and permanent mold castings across various industries.
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| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Magnesium | —— | Remainder |
| Copper | —— | 0.1% |
| Neodymium | 1.7% | 2.5% |
| Nickel | —— | 0.01% |
| Silver | 2.0% | 3.0% |
| Zirconium | 0.4% | 1.0% |
The following table provides a list of magnesium QE22A-T6 properties in both SI and US customary/Imperial units.
Click on the button to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 1820 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 260 MPa |
| Tensile Strength (Yield) | 195 MPa |
| Compressive Strength (Ultimate) | 193 MPa |
| Compressive Strength (Yield) | 195 MPa |
| Shear Strength | 160 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 | 80 |
| Knoop Hardness Converted from Brinell | 103 |
| Vickers Hardness Converted from Brinell | 90 |
| Machinability | 100% |
| Charpy Impact V-notch | 2.00 J |
| Thermal Properties | Metric |
| Melting Point | 550 - 645 °C |
| Solidus | 550 °C |
| Liquidus | 645 °C |
| Thermal Conductivity | 113 W/m·K |
| Specific Heat Capacity (Cp) | 1000 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 26.7 1/°C |
| Heat of Fusion | 373 J/g |
| Electrical Properties | Metric |
| Electrical Resistivity | 6.85×10-6 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 QE22A-T6
| Advantages | Disadvantages |
|---|---|
| Lightweight | Corrosion-prone |
| Strong | High cost |
| Durable | Difficult to machine |
| Versatile | Low melting point |
| High-performance | Limited availability |
Applications of Magnesium QE22A-T6
QE22A-T6 is a versatile and high-performance alloy that is well-suited for a variety of applications, including:
- Aerospace industry: Used to manufacture aircraft landing gear, engine mounts, and structural components.
- Automotive industry: Employed in engine blocks, pistons, and brake rotors.
- Marine industry: Applied in hulls, deck structures, and propellers.
- Industrial sector: Utilized for machinery, tooling, and fixtures.
- Medical industry: Fabricated into implants, prosthetics, and surgical instruments.
- Consumer goods industry: Incorporated into sporting goods, electronics, and furniture.