Magnesium EQ21-T6 (UNS M16330)
Magnesium EQ21-T6 is a lightweight magnesium alloy engineered for demanding applications requiring high strength, good corrosion resistance, and formability. With its favorable mechanical and thermal properties, it is commonly used across industries such as aerospace, automotive, marine, and medical device manufacturing.
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| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Magnesium | —— | Remainder |
| Copper | 0.05% | 0.1% |
| Neodymium | 1.75% | 2.5% |
| Nickel | —— | 0.01% |
| Silver | 1.3% | 1.7% |
| Zirconium | 0.4% | 1.0% |
The following table provides a list of magnesium EQ21-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 | 1810 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 235 MPa |
| Tensile Strength (Yield) | 170 MPa |
| Compressive Strength (Yield) | 195 MPa |
| Fatigue Strength # of Cycles 5.0e+7 | 100 MPa |
| Young’s Modulus (E) | 45 GPa |
| Shear Modulus (G) | 17 GPa |
| Elongation at Break in 50 mm | 2% |
| Poisson’s Ratio (ν) | 0.35 |
| Brinell Hardness 500 kg load, 10 mm ball | 70 |
| Knoop Hardness Converted from Brinell | 93 |
| Vickers Hardness Converted from Brinell | 80 |
| Thermal Properties | Metric |
| Melting Point | 540 - 640 °C |
| Solidus | 540 °C |
| Liquidus | 640 °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 EQ21-T6
| Advantages | Disadvantages |
|---|---|
| Low density | Corrosion resistance |
| High strength | Low melting point |
| Good machinability | High cost |
| Good thermal conductivity | Poor weldability |
| Good fatigue strength |
Applications of Magnesium EQ21-T6
EQ21-T6 is a versatile material that can be used in a variety of applications, including:
- Aerospace: Used in aircraft frames, landing gear, and engine components.
- Automotive: Applied in engine blocks, transmission housings, and suspension components.
- Marine: Utilized in boat hulls, decks, and rigging.
- Sporting goods: Ideal for golf clubs and bicycles due to its lightweight and strength.
- Electronics: Suitable for laptop frames and cell phone cases, offering lightweight and heat dissipation.
- Medical devices: Employed in implants and surgical tools for its biocompatibility and low weight.