Jul 31 2013
Magnesium is among the most abundantly available metals on the Earth’s crust. It is the lightest of all metals and easily machinable. This metal is commonly alloyed with aluminum, zinc, copper and other non-ferrous metals.
Magnesium AZ63A-T5 is a sand cast alloy, which exhibits good strength at room temperature. The ductility and toughness of this alloy are also considerably high. This datasheet will elaborate on the properties and applications of this alloy.
Chemical Composition
The following table provides the chemical composition of magnesium AZ63A-T5 alloy.
| Element |
Content (%) |
| Magnesium, Mg |
91 |
| Aluminum, Al |
5.3-6.7 |
| Zinc, Zn |
2.5-3.5 |
| Silicon, Si |
≤0.30 |
| Copper, Cu |
≤0.25 |
| Manganese, Mn |
≥0.15 |
| Nickel, Ni |
≤0.010 |
Physical Properties
The physical properties of magnesium AZ63A-T5 alloy are given in the following table.
| Properties |
Metric |
Imperial |
| Density |
1.83 g/cc |
0.0661 lb/in³ |
| Melting Point (Incipient melting) |
≥360°C |
≥680°F |
Mechanical Properties
The mechanical properties of magnesium AZ63A-T5 alloy are listed in the table below.
| Properties |
Metric |
Imperial |
| Tensile Strength |
200 MPa |
29000 psi |
| Yield strength (at strain 0.200%) |
105 MPa |
15200 psi |
| Compressive Yield Strength (at 0.2% offset) |
97 MPa |
14100 psi |
| Ultimate Bearing Strength |
455 MPa |
66000 psi |
| Bearing Yield Strength |
455 MPa |
66000 psi |
| Elongation at break (in 50 mm) |
4% |
4% |
| Elastic Modulus (in tension) |
45 GPa |
6530 ksi |
| Poisson's ratio |
0.35 |
0.35 |
| Shear Modulus |
17 GPa |
2470 ksi |
| Shear Strength |
130 MPa |
18900 psi |
| Machinability (relative rating, 100=Best) |
100 |
100 |
| Hardness, Brinell (500 kg load, 10 mm ball) |
55 |
55 |
| Hardness, Knoop (estimated from Brinell) |
70 |
70 |
| Hardness, Vickers (estimated from Brinell) |
66 |
66 |
| Hardness, Rockwell E |
66 |
66 |
Thermal Properties
The following table outlines the thermal properties of magnesium AZ63A-T5 alloy.
| Properties |
Metric |
Imperial |
| Thermal expansion co-efficient (at 0.000-100°C/32-212°F) |
26.1 µm/m°C |
14.5 µin/in°F |
| Thermal Conductivity |
65.1 W/mK |
452 BTU in/hr.ft².°F |
Other Designations
Some of the other designations that are used to denote magnesium AZ63A-T5 alloy are:-
- UNS M11630
- Elektron AZG
- AMS 4420
- AMS 4422
- ASTM B 80
Applications
Magnesium AZ63A-T5 alloy is used in commercial and military structures that require medium strength and good ductility.