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WE43B Magnesium vs. C70620 Copper-nickel

WE43B magnesium belongs to the magnesium alloys classification, while C70620 copper-nickel belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (11, 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 WE43B magnesium and the bottom bar is C70620 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
120
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
46
Tensile Strength: Ultimate (UTS), MPa 250
300 to 570

Thermal Properties

Latent Heat of Fusion, J/g 330
220
Maximum Temperature: Mechanical, °C 180
220
Melting Completion (Liquidus), °C 640
1120
Melting Onset (Solidus), °C 550
1060
Specific Heat Capacity, J/kg-K 960
390
Thermal Conductivity, W/m-K 51
49
Thermal Expansion, µm/m-K 27
17

Otherwise Unclassified Properties

Base Metal Price, % relative 34
33
Density, g/cm3 1.9
8.9
Embodied Carbon, kg CO2/kg material 28
3.4
Embodied Energy, MJ/kg 250
51
Embodied Water, L/kg 910
300

Common Calculations

Stiffness to Weight: Axial, points 13
7.7
Stiffness to Weight: Bending, points 61
19
Strength to Weight: Axial, points 36
9.3 to 18
Strength to Weight: Bending, points 46
11 to 17
Thermal Diffusivity, mm2/s 28
14
Thermal Shock Resistance, points 15
10 to 20

Alloy Composition


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Carbon (C), % 0
0 to 0.050
Copper (Cu), % 0 to 0.020
86.5 to 90
Iron (Fe), % 0 to 0.010
1.0 to 1.8
Lead (Pb), % 0
0 to 0.020
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 89.8 to 93.5
0
Manganese (Mn), % 0 to 0.030
0 to 1.0
Nickel (Ni), % 0 to 0.0050
9.0 to 11
Phosphorus (P), % 0
0 to 0.2
Sulfur (S), % 0
0 to 0.020
Unspecified Rare Earths, % 2.4 to 4.4
0
Yttrium (Y), % 3.7 to 4.3
0
Zinc (Zn), % 0 to 0.2
0 to 0.5
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.5