Magnesium HK31A-T6 (UNS M13310)
HK31A-T6 is a high-strength, cast magnesium alloy that is used in a variety of applications, including aerospace, automotive, and industrial machinery. It is known for its good castability, pressure tightness, and creep resistance.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Magnesium | Remainder | |
| Copper | 0.10% | |
| Nickel | 0.01% | |
| Thorium | 2.5% | 4.0% |
| Zinc | 0.30% | |
| Zirconium | 0.40% | 1.0% |
The following table provides a list of magnesium HK31A-T6 properties in both SI and US customary/Imperial units.
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 1800 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 220 MPa |
| Tensile Strength (Yield) | 120 MPa |
| Compressive Strength (Yield) | 105 MPa |
| Bearing Strength (Ultimate) | 420 MPa |
| Bearing Strength (Yield) | 275 MPa |
| Fatigue Strength # of Cycles 1.0e+8 | 70 MPa |
| Shear Strength | 145 MPa |
| Young’s Modulus (E) | 45 GPa |
| Shear Modulus (G) | 17 GPa |
| Elongation at Break in 50 mm | 8% |
| Poisson’s Ratio (ν) | 0.35 |
| Brinell Hardness 500 kg load, 10 mm ball | 55 |
| Knoop Hardness Converted from Brinell | 70 |
| Machinability | 100% |
| Charpy Impact V-notch | 3.80 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 | 7.70×10-6 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-T6
| Advantages | Disadvantages |
|---|---|
| High strength-to-weight ratio | Reactive to oxidation |
| Good damping capacity | Limited temperature range |
| Good corrosion resistance | Higher cost |
| Excellent machinability |
Applications of Magnesium HK31A-T6
Magnesium HK31A-T6, being a high-strength magnesium alloy with good corrosion resistance, finds several applications in the aerospace industry. Here are some common applications of Magnesium HK31A-T6:
- Aircraft Components: Magnesium HK31A-T6 is used in the manufacturing of various aircraft components. It can be found in structural components such as fuselage frames, wing structures, and landing gear components.
- Engine Components: Certain engine parts, particularly those that require lightweight materials and excellent strength, can be made from Magnesium HK31A-T6. This includes engine housings, gearbox casings, and other structural elements.
- Helicopter Components: Magnesium HK31A-T6 is also utilized in the construction of helicopter components. Its low density and high strength make it suitable for rotor hubs, transmission housings, and other structural parts.
- Spacecraft Applications: Magnesium HK31A-T6 may find application in certain spacecraft components where weight reduction is critical. It can be used in satellite structures, propulsion systems, and other components that require a balance of lightweight design and strength.
- Defense Industry: The defense sector may employ Magnesium HK31A-T6 for specific applications. It can be utilized in military aircraft, missiles, and other defense-related structures that require lightweight materials without compromising on strength and durability.