Aug 5 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Introduction
Magnesium HK31A-H24 alloy is known to possess good castability, pressure tightness, and creep resistant to 350°C (662°F).
The following datasheet gives an overview of the magnesium HK31A-H24 alloy.
Chemical Composition
The following table shows the chemical composition of magnesium HK31A-H24 alloy.
|
Element |
Content (%) |
|
Magnesium, Mg |
96 |
|
Thorium, Th |
2.5 - 4 |
|
Zirconium, Zr |
0.40-1 |
|
Zinc. Zn |
≤ 0.30 |
|
Copper, Cu |
≤ 0.10 |
|
Nickel, Ni |
≤ 0.010 |
Physical Properties
The physical properties of magnesium HK31A-H24 alloy are given in the following table.
|
Properties |
Metric |
Imperial |
|
Density |
1.80 g/cm³ |
0.0650 lb/in³ |
|
Melting point |
590 - 650°C |
1090 - 1200°F |
Mechanical Properties
The mechanical properties of magnesium HK31A-H24 plate alloy are outlined in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
250 MPa |
36300 psi |
|
Yield strength (@strain 0.200 %) |
190 MPa |
27600 psi |
|
Elongation at break |
15% |
15% |
|
Poisson's ratio |
0.35 |
0.35 |
|
Elastic modulus |
45 GPa |
6530 ksi |
|
Shear modulus |
17 GPa |
2470 ksi |
|
Hardness, Brinell |
58 |
58 |
|
Hardness, Knoop |
72 |
72 |
|
Machinability |
100 |
100 |
Thermal Properties
The thermal properties of magnesium HK31A-H24 alloy are highlighted in the following table.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@0.000-100°C/32-212°F) |
26.8 µm/m°C |
14.9 µin/in°F |
|
Thermal conductivity |
92W/mK |
638 BTU in/hr.ft².°F |