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EN-MC65120 Magnesium vs. C72200 Copper-nickel

EN-MC65120 magnesium belongs to the magnesium alloys classification, while C72200 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 EN-MC65120 magnesium and the bottom bar is C72200 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
48
Tensile Strength: Ultimate (UTS), MPa 160
350 to 580

Thermal Properties

Latent Heat of Fusion, J/g 330
220
Maximum Temperature: Mechanical, °C 180
230
Melting Completion (Liquidus), °C 590
1180
Melting Onset (Solidus), °C 520
1120
Specific Heat Capacity, J/kg-K 970
400
Thermal Conductivity, W/m-K 100
34
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
6.5
Electrical Conductivity: Equal Weight (Specific), % IACS 120
6.6

Otherwise Unclassified Properties

Base Metal Price, % relative 25
36
Density, g/cm3 1.9
8.9
Embodied Carbon, kg CO2/kg material 25
3.9
Embodied Energy, MJ/kg 190
59
Embodied Water, L/kg 930
300

Common Calculations

Stiffness to Weight: Axial, points 13
8.0
Stiffness to Weight: Bending, points 62
19
Strength to Weight: Axial, points 23
11 to 18
Strength to Weight: Bending, points 34
12 to 17
Thermal Diffusivity, mm2/s 56
9.6
Thermal Shock Resistance, points 9.8
12 to 20

Alloy Composition


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Chromium (Cr), % 0
0.3 to 0.7
Copper (Cu), % 0 to 0.030
78.1 to 84.2
Iron (Fe), % 0 to 0.010
0.5 to 1.0
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
0 to 1.0
Nickel (Ni), % 0 to 0.0050
15 to 18
Silicon (Si), % 0 to 0.010
0
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
0 to 1.0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.2