Magnesium HK31A-H24 (UNS M13310)
Magnesium HK31A-H24 is a high-performance magnesium alloy prized for its excellent castability, superior pressure tightness, and outstanding creep resistance. It is widely utilized in aerospace applications, including aircraft components and spacecraft structures, where strength and durability are critical.
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| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Magnesium | —— | Remainder |
| Copper | —— | 0.1% |
| Nickel | —— | 0.01% |
| Thorium | 2.5% | 4.0% |
| Zinc | —— | 0.3% |
| Zirconium | 0.4% | 1.0% |
The following table provides a list of magnesium HK31A-H24 properties in both SI and US customary/Imperial units.
Click on the button to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 1800 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 250 MPa |
| Tensile Strength (Yield) | 190 MPa |
| Compressive Strength (Yield) | 160 MPa |
| Bearing Strength (Ultimate) | 420 MPa |
| Bearing Strength (Yield) | 285 MPa |
| Young’s Modulus (E) | 45 GPa |
| Shear Modulus (G) | 17 GPa |
| Elongation at Break in 50 mm | 15% |
| Poisson’s Ratio (ν) | 0.35 |
| Brinell Hardness 500 kg load, 10 mm ball | 58 |
| Knoop Hardness Converted from Brinell | 72 |
| Machinability | 100% |
| Charpy Impact V-notch | 4.10 J |
| Thermal Properties | Metric |
| Melting Point | 590 - 650 °C |
| Solidus | 590 °C |
| Liquidus | 650 °C |
| Thermal Conductivity | 92 W/m·K |
| Specific Heat Capacity (Cp) | 1000 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 26.8 1/°C |
| Heat of Fusion | 325 J/g |
| Electrical Properties | Metric |
| Electrical Resistivity | 6.10×10-6 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 HK31A-H24
| Advantages | Disadvantages |
|---|---|
| Good castability | High cost |
| High strength | Corrosion prone |
| Creep resistance | Low melting point |
| Lightweight | Difficult to machine |
Applications of Magnesium HK31A-H24
HK31A-H24 is a versatile and high-performance magnesium alloy that is well-suited for a variety of applications, including:
- Aerospace: Valued for its castability, pressure tightness, and creep resistance, it is commonly used for engine mounts, landing gear, and structural components.
- Automotive: Applied in engine blocks, brake rotors, and suspension components due to its strength and lightweight nature.
- Machinery: Suitable for various machinery parts, including gears, shafts, and bearings, benefiting from its durability.
- Electronics: Non-magnetic characteristics make it ideal for electronic housings and circuit boards.