Aug 5 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Applications
Introduction
Magnesium alloys have high impact resistance, low inertia, and good damping capacity.
Magnesium alloys are designated using the ASTM and SAE system in which the first part indicates the two main alloying elements in the alloy and the second part represents their percentages.
The following datasheet gives an overview of magnesium ZE63A-T6 alloy.
Chemical Composition
The following table shows the chemical composition of magnesium ZE63A-T6 alloy.
|
Element |
Content (%) |
|
Magnesium, Mg |
91 |
|
Zinc, Zn |
5.5 - 6 |
|
Neodymium, Nd |
2.1 -3 |
|
Zirconium, Zr |
0.40 - 1 |
|
Copper, Cu |
≤ 0.10 |
|
Nickel, Ni |
≤ 0.010 |
Physical Properties
The physical properties of magnesium ZE63A-T6 alloy are given in the following table.
|
Properties |
Metric |
Imperial |
|
Density |
1.87 g/cm³ |
0.0676 lb/in³ |
|
Melting point |
510 - 635 °C |
950 - 1180 °F |
Mechanical Properties
The mechanical properties of magnesium ZE63A-T6 alloy are outlined in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
300 MPa |
43500 psi |
|
Yield strength (@strain 0.200 %) |
190 MPa |
27600 psi |
|
Elastic modulus |
45 GPa |
6530 ksi |
|
Shear modulus |
17 GPa |
2470 ksi |
|
Poisson's ratio |
0.35 |
0.35 |
|
Elongation at break |
10% |
10% |
|
Hardness, Brinell |
60 - 85 |
60 - 85 |
|
Hardness, Knoop |
93 |
93 |
|
Hardness, Vickers |
80 |
80 |
|
Machinability |
100 |
100 |
Thermal Properties
The thermal properties of magnesium ZE63A-T6 alloy are highlighted in the following table.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@0.000-100°C/ 32-212°F) |
26.5 µm/m°C |
14.7 µin/in°F |
|
Thermal conductivity |
109 W/mK |
756 BTU in/hr.ft².°F |
Applications
Magnesium ZE63A-T6 alloy is primarily used in thin-section castings for applications requiring high mechanical strength and freedom from porosity.