Aug 6 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Applications
Introduction
Magnesium alloys are popular in the automobile and aerospace sectors due to their lightweight property. Magnesium AM50A cast alloy has excellent ductility, superior energy absorbing properties, and good strength and castability.
The following sections will discuss in detail about magnesium AM50A cast alloy.
Chemical Composition
The chemical composition of magnesium AM50A cast alloy is outlined in the following table.
|
Element |
Content (%) |
|
Aluminum, Al |
4.4-5.4 |
|
Manganese, Mn |
0.26-0.6 |
|
Zinc, Zn |
0.22 |
|
Silicon, Si |
0.1 |
|
Copper, Cu |
0.01 |
|
Nickel, Ni |
0.002 |
|
Iron, Fe |
0.004 |
|
Others, each max |
0.02 |
|
Magnesium, Mg |
Remainder |
Physical Properties
The physical properties of magnesium AM50A cast alloy are tabulated below.
|
Properties |
Metric |
Imperial |
|
Density |
1.77 g/cm3 |
0.063 lb/in3 |
Mechanical Properties
The following table shows mechanical properties of magnesium AM50A cast alloy.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
210-230 MPa |
30.4-33 ksi |
|
Yield strength |
125 MPa |
18.12 ksi |
|
Elastic modulus |
45 GPa |
6526 ksi |
|
Elongation |
10-15% |
10-15% |
|
Hardness |
60 |
60 |
Thermal Properties
The thermal properties of magnesium AM50A cast alloy are tabulated below.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient |
26 µm/m°C |
14.4 µin/in°F |
|
Thermal conductivity |
65 W/mK |
450 BTU in/hr.ft².°F |
Applications
Magnesium AM50A cast alloy is chiefly used in several components in the automobile sector. The following are some of them:
-
Brackets
-
Seat frames
-
Steering wheels
-
Instrument panels.