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QE22A Magnesium vs. C72200 Copper-nickel

QE22A magnesium belongs to the magnesium alloys classification, while C72200 copper-nickel belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is QE22A magnesium and the bottom bar is C72200 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
48
Tensile Strength: Ultimate (UTS), MPa 250
350 to 580

Thermal Properties

Latent Heat of Fusion, J/g 340
220
Maximum Temperature: Mechanical, °C 250
230
Melting Completion (Liquidus), °C 640
1180
Melting Onset (Solidus), °C 570
1120
Specific Heat Capacity, J/kg-K 970
400
Thermal Conductivity, W/m-K 110
34
Thermal Expansion, µm/m-K 27
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
6.5
Electrical Conductivity: Equal Weight (Specific), % IACS 120
6.6

Otherwise Unclassified Properties

Density, g/cm3 2.0
8.9
Embodied Carbon, kg CO2/kg material 27
3.9
Embodied Energy, MJ/kg 220
59

Common Calculations

Stiffness to Weight: Axial, points 13
8.0
Stiffness to Weight: Bending, points 60
19
Strength to Weight: Axial, points 36
11 to 18
Strength to Weight: Bending, points 46
12 to 17
Thermal Diffusivity, mm2/s 59
9.6
Thermal Shock Resistance, points 15
12 to 20

Alloy Composition

Chromium (Cr), % 0
0.3 to 0.7
Copper (Cu), % 0 to 0.1
78.1 to 84.2
Iron (Fe), % 0
0.5 to 1.0
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 93.1 to 95.8
0
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.010
15 to 18
Silver (Ag), % 2.0 to 3.0
0
Unspecified Rare Earths, % 1.8 to 2.5
0
Zinc (Zn), % 0
0 to 1.0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.2