Magnesium EQ21-T6 (UNS M16330)
EQ21-T6 is a magnesium alloy that is used in a variety of applications, including aerospace, automotive, and medical devices. It is known for its high strength-to-weight ratio, good corrosion resistance, and excellent formability.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Magnesium | Remainder | |
| Copper | 0.05% | 0.10% |
| Neodymium | 1.75% | 2.5% |
| Nickel | 0.01% | |
| Silver | 1.3% | 1.7% |
| Zirconium | 0.40% | 1.0% |
The following table provides a list of magnesium EQ21-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 | 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
Magnesium EQ21-T6 is a versatile material that can be used in a variety of applications, including:
- Aerospace: Magnesium EQ21-T6 is used in a variety of aerospace applications, including aircraft frames, landing gear, and engine components.
- Automotive: Magnesium EQ21-T6 is used in a variety of automotive applications, including engine blocks, transmission housings, and suspension components.
- Marine: Magnesium EQ21-T6 is used in a variety of marine applications, including boat hulls, decks, and rigging.
- Sporting goods: Magnesium EQ21-T6 is used to make sporting goods, such as golf clubs and bicycles, because it is lightweight and strong.
- Electronics: Magnesium EQ21-T6 is used to make electronics, such as laptop frames and cell phone cases, because it is lightweight and can conduct heat away from electronic components.
- Medical devices: Magnesium EQ21-T6 is used to make medical devices, such as implants and surgical tools, because it is lightweight and biocompatible.