Jul 15 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Applications
Introduction
Magnesium is a strong, light-weight metal that reacts exothermically with most acids and water at room temperature. It is found in large deposits of dolomite, magnesite and other minerals, and also in mineral water where magnesium ion is soluble. Magnesium alloys have a lower density and good corrosion resistance. They harden rapidly with any type of cold work, and hence cannot be cold formed extensively without repeated annealing.
The following datasheet gives an overview of magnesium EA65RS-T4 alloy.
Chemical Composition
The following table shows the chemical composition of magnesium EA65RS-T4 alloy.
|
Element |
Content (%) |
|
Magnesium, Mg |
84 |
|
Yttrium, Y |
5.9 |
|
Aluminum, Al |
5 |
|
Zinc, Zn |
5 |
Physical Properties
The physical properties of magnesium EA65RS-T4 alloy are given in the following table.
|
Properties |
Metric |
Imperial |
|
Density |
1.92 g/cm³ |
0.0694 lb/in³ |
Mechanical Properties
The mechanical properties of extruded magnesium EA65RS-T4 alloy are listed in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
515 MPa |
74700 psi |
|
Yield strength |
460 MPa |
66700 psi |
|
Shear modulus (estimated from similar Mg alloys) |
17 GPa |
2470 ksi |
|
Elastic modulus (typical Mg alloy value in tension) |
45 GPa |
6530 ksi |
|
Poisson's ratio |
0.32 |
0.32 |
|
Elongation at break (in 50 mm) |
5% |
5% |
Applications
Magnesium EA65RS-T4 alloy is mainly used for aircraft applications.