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WE43B Magnesium vs. C70700 Copper-nickel

WE43B magnesium belongs to the magnesium alloys classification, while C70700 copper-nickel belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 C70700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
120
Elongation at Break, % 2.2
39
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
46
Shear Strength, MPa 140
220
Tensile Strength: Ultimate (UTS), MPa 250
320
Tensile Strength: Yield (Proof), MPa 200
110

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
59
Thermal Expansion, µm/m-K 27
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
11
Electrical Conductivity: Equal Weight (Specific), % IACS 53
12

Otherwise Unclassified Properties

Base Metal Price, % relative 34
34
Density, g/cm3 1.9
8.9
Embodied Carbon, kg CO2/kg material 28
3.4
Embodied Energy, MJ/kg 250
52
Embodied Water, L/kg 910
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.2
100
Resilience: Unit (Modulus of Resilience), kJ/m3 430
51
Stiffness to Weight: Axial, points 13
7.6
Stiffness to Weight: Bending, points 61
19
Strength to Weight: Axial, points 36
10
Strength to Weight: Bending, points 46
12
Thermal Diffusivity, mm2/s 28
17
Thermal Shock Resistance, points 15
12

Alloy Composition


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Copper (Cu), % 0 to 0.020
88.5 to 90.5
Iron (Fe), % 0 to 0.010
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
0 to 0.5
Nickel (Ni), % 0 to 0.0050
9.5 to 10.5
Unspecified Rare Earths, % 2.4 to 4.4
0
Yttrium (Y), % 3.7 to 4.3
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.5