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WE43B Magnesium vs. C71640 Copper-nickel

WE43B magnesium belongs to the magnesium alloys classification, while C71640 copper-nickel belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (5, 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 C71640 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
140
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
52
Tensile Strength: Ultimate (UTS), MPa 250
490 to 630
Tensile Strength: Yield (Proof), MPa 200
190 to 460

Thermal Properties

Latent Heat of Fusion, J/g 330
240
Maximum Temperature: Mechanical, °C 180
260
Melting Completion (Liquidus), °C 640
1180
Melting Onset (Solidus), °C 550
1120
Specific Heat Capacity, J/kg-K 960
410
Thermal Conductivity, W/m-K 51
29
Thermal Expansion, µm/m-K 27
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 53
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 34
40
Density, g/cm3 1.9
8.9
Embodied Carbon, kg CO2/kg material 28
5.0
Embodied Energy, MJ/kg 250
73
Embodied Water, L/kg 910
280

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 430
130 to 750
Stiffness to Weight: Axial, points 13
8.7
Stiffness to Weight: Bending, points 61
20
Strength to Weight: Axial, points 36
15 to 20
Strength to Weight: Bending, points 46
16 to 18
Thermal Diffusivity, mm2/s 28
8.2
Thermal Shock Resistance, points 15
16 to 21

Alloy Composition


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Copper (Cu), % 0 to 0.020
61.7 to 67.8
Iron (Fe), % 0 to 0.010
1.7 to 2.3
Lead (Pb), % 0
0 to 0.050
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 89.8 to 93.5
0
Manganese (Mn), % 0 to 0.030
1.5 to 2.5
Nickel (Ni), % 0 to 0.0050
29 to 32
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 1.0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.5