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WE43B Magnesium vs. C72500 Copper-nickel

WE43B magnesium belongs to the magnesium alloys classification, while C72500 copper-nickel belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, 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 C72500 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
45
Tensile Strength: Ultimate (UTS), MPa 250
420 to 780

Thermal Properties

Latent Heat of Fusion, J/g 330
210
Maximum Temperature: Mechanical, °C 180
210
Melting Completion (Liquidus), °C 640
1130
Melting Onset (Solidus), °C 550
1060
Specific Heat Capacity, J/kg-K 960
390
Thermal Conductivity, W/m-K 51
54
Thermal Expansion, µm/m-K 27
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 34
35
Density, g/cm3 1.9
8.9
Embodied Carbon, kg CO2/kg material 28
3.6
Embodied Energy, MJ/kg 250
55
Embodied Water, L/kg 910
320

Common Calculations

Stiffness to Weight: Axial, points 13
7.6
Stiffness to Weight: Bending, points 61
19
Strength to Weight: Axial, points 36
13 to 24
Strength to Weight: Bending, points 46
14 to 21
Thermal Diffusivity, mm2/s 28
16
Thermal Shock Resistance, points 15
14 to 27

Alloy Composition


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Copper (Cu), % 0 to 0.020
85.2 to 89.7
Iron (Fe), % 0 to 0.010
0 to 0.6
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
0 to 0.2
Nickel (Ni), % 0 to 0.0050
8.5 to 10.5
Tin (Sn), % 0
1.8 to 2.8
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 0.2