Aug 5 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Introduction
Designers often prefer to work with magnesium alloys due to their key feature of low density. These alloys are also known to have good high temperature mechanical properties and good to excellent corrosion resistance.
The following datasheet gives an overview of magnesium ZK61A-T5 alloy.
Chemical Composition
The following table shows the chemical composition of magnesium ZK61A-T5 alloy.
|
Element |
Content (%) |
|
Magnesium, Mg |
92.1-93.9 |
|
Zinc. Zn |
5.5-6.5 |
|
Zirconium, Zr |
0.60-1 |
|
Copper, Cu |
≤ 0.10 |
|
Nickel, Ni |
≤ 0.010 |
|
Remainder |
≤ 0.30 |
Physical Properties
The physical properties of magnesium ZK61A-T5 alloy are given in the following table.
|
Properties |
Metric |
Imperial |
|
Density |
1.83 g/cm³ |
0.0661 lb/in³ |
|
Melting point |
520 - 635 °C |
968 - 1180 °F |
Mechanical Properties
The mechanical properties of magnesium ZK61A-T5 cast alloy are outlined in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
310 MPa |
45000 psi |
|
Yield strength (@strain 0.200 %) |
185 MPa |
26800 psi |
|
Elongation at break |
10% |
10% |
|
Poisson's ratio |
0.35 |
0.35 |
|
Elastic modulus |
45 GPa |
6530 ksi |
|
Shear modulus |
17 GPa |
2470 ksi |
|
Hardness, Brinell |
68 |
68 |
|
Hardness, Knoop |
91 |
91 |
|
Hardness, Vickers |
78 |
78 |
|
Machinability |
100 |
100 |
Thermal Properties
The thermal properties of magnesium ZK61A-T5 alloy are highlighted in the following table.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@0.000-100°C/32-212°F) |
27 µm/m°C |
15 µin/in°F |
|
Thermal conductivity |
120 W/mK |
833 BTU in/hr.ft².°F |
Other Designations
The other designations used to denote magnesium ZK61A-T5 alloy are listed below:
-
AMS 4444
-
ASTM B 80
-
SAE J465