Magnesium ZK21A (UNS M16210)
ZK21A is a magnesium alloy that is commonly used in aerospace and automotive applications. It is a lightweight and strong alloy that has good corrosion resistance.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Magnesium | Remainder | |
| Zinc | 2.0% | 2.6% |
| Zirconium | 0.45% | 0.80% |
The following table provides a list of magnesium ZK21A 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) | 235 - 260 MPa |
| Tensile Strength (Yield) | 180 - 195 MPa |
| Elongation at Break | 4% |
| Thermal Properties | Metric |
| Melting Point | 600 - 635 °C |
| Solidus | 600 °C |
| Liquidus | 635 °C |
| Thermal Conductivity | 125 W/m·K |
| Specific Heat Capacity (Cp) | 960 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 27 1/°C |
| Electrical Properties | Metric |
| Electrical Resistivity | 5.50×10-6 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 ZK21A
| Advantages | Disadvantages |
|---|---|
| Lightweight | High cost |
| High strength | Low melting point |
| Good weldability | Difficult to machine |
| Corrosion resistant |
Applications of Magnesium ZK21A
Magnesium ZK21A is a versatile alloy with a wide range of applications. Some of the common applications of Magnesium ZK21A include:
- Aircraft: Magnesium ZK21A is used in a variety of aircraft parts, including landing gear, wing spars, and fuselage panels.
- Automotive: Magnesium ZK21A is used in a variety of automotive parts, including engine blocks, pistons, and brake rotors.
- Electronics: Magnesium ZK21A is used in a variety of electronics components, including housings, heat sinks, and circuit boards.
- Marine: Magnesium ZK21A is used in a variety of marine applications, including boat hulls, propellers, and winches.
- Medical: Magnesium ZK21A is used in a variety of medical devices, including implants, surgical instruments, and medical equipment.
- Sporting goods: Magnesium ZK21A is used in a variety of sporting goods, including bicycles, golf clubs, and fishing rods.