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WE43B Magnesium vs. C72900 Copper-nickel

WE43B magnesium belongs to the magnesium alloys classification, while C72900 copper-nickel belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 C72900 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
120
Elongation at Break, % 2.2
6.0 to 20
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
45
Shear Strength, MPa 140
540 to 630
Tensile Strength: Ultimate (UTS), MPa 250
870 to 1080
Tensile Strength: Yield (Proof), MPa 200
700 to 920

Thermal Properties

Latent Heat of Fusion, J/g 330
210
Maximum Temperature: Mechanical, °C 180
210
Melting Completion (Liquidus), °C 640
1120
Melting Onset (Solidus), °C 550
950
Specific Heat Capacity, J/kg-K 960
380
Thermal Conductivity, W/m-K 51
29
Thermal Expansion, µm/m-K 27
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 53
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 34
39
Density, g/cm3 1.9
8.8
Embodied Carbon, kg CO2/kg material 28
4.6
Embodied Energy, MJ/kg 250
72
Embodied Water, L/kg 910
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.2
49 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 430
2030 to 3490
Stiffness to Weight: Axial, points 13
7.6
Stiffness to Weight: Bending, points 61
19
Strength to Weight: Axial, points 36
27 to 34
Strength to Weight: Bending, points 46
23 to 27
Thermal Diffusivity, mm2/s 28
8.6
Thermal Shock Resistance, points 15
31 to 38

Alloy Composition


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Copper (Cu), % 0 to 0.020
74.1 to 78
Iron (Fe), % 0 to 0.010
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 89.8 to 93.5
0 to 0.15
Manganese (Mn), % 0 to 0.030
0 to 0.3
Nickel (Ni), % 0 to 0.0050
14.5 to 15.5
Niobium (Nb), % 0
0 to 0.1
Tin (Sn), % 0
7.5 to 8.5
Unspecified Rare Earths, % 2.4 to 4.4
0
Yttrium (Y), % 3.7 to 4.3
0
Zinc (Zn), % 0 to 0.2
0 to 0.5
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.3