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EN-MC65120 Magnesium vs. C70700 Copper-nickel

EN-MC65120 magnesium belongs to the magnesium alloys classification, while C70700 copper-nickel belongs to the copper alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, 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 C70700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
73
Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 3.1
39
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
46
Shear Strength, MPa 92
220
Tensile Strength: Ultimate (UTS), MPa 160
320
Tensile Strength: Yield (Proof), MPa 110
110

Thermal Properties

Latent Heat of Fusion, J/g 330
220
Maximum Temperature: Mechanical, °C 180
220
Melting Completion (Liquidus), °C 590
1120
Melting Onset (Solidus), °C 520
1060
Specific Heat Capacity, J/kg-K 970
390
Thermal Conductivity, W/m-K 100
59
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
11
Electrical Conductivity: Equal Weight (Specific), % IACS 120
12

Otherwise Unclassified Properties

Base Metal Price, % relative 25
34
Density, g/cm3 1.9
8.9
Embodied Carbon, kg CO2/kg material 25
3.4
Embodied Energy, MJ/kg 190
52
Embodied Water, L/kg 930
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
100
Resilience: Unit (Modulus of Resilience), kJ/m3 140
51
Stiffness to Weight: Axial, points 13
7.6
Stiffness to Weight: Bending, points 62
19
Strength to Weight: Axial, points 23
10
Strength to Weight: Bending, points 34
12
Thermal Diffusivity, mm2/s 56
17
Thermal Shock Resistance, points 9.8
12

Alloy Composition


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Copper (Cu), % 0 to 0.030
88.5 to 90.5
Iron (Fe), % 0 to 0.010
0 to 0.050
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
0 to 0.5
Nickel (Ni), % 0 to 0.0050
9.5 to 10.5
Silicon (Si), % 0 to 0.010
0
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.5