Aug 5 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Introduction
Magnesium compounds are typically white crystals that are soluble in water. Magnesium ZC71 is a high strength wrought alloy when fully heat treated.
The following datasheet gives an overview of magnesium ZC71 alloy.
Chemical Composition
The following table shows the chemical composition of magnesium ZC71 alloy.
Element |
Content (%) |
Magnesium, Mg |
90 - 92.5 |
Zinc, Zn |
6-7 |
Copper, Cu |
1-1.5 |
Manganese, Mn |
0.5-1 |
Silicon, Si |
≤0.2 |
Nickel, Ni |
≤0.010 |
Other, total |
≤0.30 |
Physical Properties
The physical properties of magnesium ZC71 alloy are given in the following table.
Properties |
Metric |
Imperial |
Density |
1.83 g/cm3 |
0.0661 lb/in3 |
Mechanical Properties
The mechanical properties of extruded magnesium ZC71 alloy are listed in the following table.
Properties |
Metric |
Imperial |
Tensile strength |
280 MPa |
40600 psi |
Yield strength |
180 MPa |
26100 psi |
Shear modulus |
17 GPa |
2470 ksi |
Elastic modulus |
44.2 GPa |
6410 ksi |
Poisson's ratio |
0.30 |
0.30 |
Elongation at break (in 50 mm) |
12% |
12% |
Brinell hardness (500 kg load, 10 mm ball) |
75 |
75 |
Knoop hardness (estimated from Brinell) |
85 |
85 |
Vickers hardness (estimated from Brinell) |
98 |
98 |
Thermal Properties
The following table outlines the thermal properties of magnesium ZC71 alloy.
Properties |
Metric |
Imperial |
Thermal expansion co-efficient (@ 0 -100°C/32-212°F) |
26 µm/m°C |
14.4 µin/in°F |
Thermal conductivity |
122 W/mK |
847 BTU in/hr.ft2.°F |