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C81400 Copper vs. WE54A Magnesium

C81400 copper belongs to the copper alloys classification, while WE54A magnesium belongs to the magnesium alloys. There are 28 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 C81400 copper and the bottom bar is WE54A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
44
Elongation at Break, % 11
4.3 to 5.6
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 41
17
Tensile Strength: Ultimate (UTS), MPa 370
270 to 300
Tensile Strength: Yield (Proof), MPa 250
180

Thermal Properties

Latent Heat of Fusion, J/g 210
330
Maximum Temperature: Mechanical, °C 200
170
Melting Completion (Liquidus), °C 1090
640
Melting Onset (Solidus), °C 1070
570
Specific Heat Capacity, J/kg-K 390
960
Thermal Conductivity, W/m-K 260
52
Thermal Expansion, µm/m-K 17
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
10
Electrical Conductivity: Equal Weight (Specific), % IACS 61
47

Otherwise Unclassified Properties

Base Metal Price, % relative 33
34
Density, g/cm3 8.9
1.9
Embodied Carbon, kg CO2/kg material 2.8
29
Embodied Energy, MJ/kg 45
260
Embodied Water, L/kg 310
900

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
10 to 14
Resilience: Unit (Modulus of Resilience), kJ/m3 260
360 to 380
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 18
62
Strength to Weight: Axial, points 11
39 to 43
Strength to Weight: Bending, points 13
49 to 51
Thermal Diffusivity, mm2/s 75
28
Thermal Shock Resistance, points 13
18 to 19

Alloy Composition

Beryllium (Be), % 0.020 to 0.1
0
Chromium (Cr), % 0.6 to 1.0
0
Copper (Cu), % 98.4 to 99.38
0 to 0.030
Iron (Fe), % 0
0 to 0.010
Lithium (Li), % 0
0 to 0.2
Magnesium (Mg), % 0
88.7 to 93.4
Manganese (Mn), % 0
0 to 0.030
Nickel (Ni), % 0
0 to 0.0050
Silicon (Si), % 0
0 to 0.010
Unspecified Rare Earths, % 0
1.5 to 4.0
Yttrium (Y), % 0
4.8 to 5.5
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3