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EN-MC21310 Magnesium vs. C71640 Copper-nickel

EN-MC21310 magnesium belongs to the magnesium alloys classification, while C71640 copper-nickel belongs to the copper alloys. There are 26 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 EN-MC21310 magnesium and the bottom bar is C71640 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
140
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
52
Tensile Strength: Ultimate (UTS), MPa 200
490 to 630
Tensile Strength: Yield (Proof), MPa 120
190 to 460

Thermal Properties

Latent Heat of Fusion, J/g 360
240
Maximum Temperature: Mechanical, °C 100
260
Melting Completion (Liquidus), °C 600
1180
Melting Onset (Solidus), °C 560
1120
Specific Heat Capacity, J/kg-K 1000
410
Thermal Conductivity, W/m-K 89
29
Thermal Expansion, µm/m-K 26
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 12
40
Density, g/cm3 1.6
8.9
Embodied Carbon, kg CO2/kg material 23
5.0
Embodied Energy, MJ/kg 160
73
Embodied Water, L/kg 970
280

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 160
130 to 750
Stiffness to Weight: Axial, points 15
8.7
Stiffness to Weight: Bending, points 73
20
Strength to Weight: Axial, points 34
15 to 20
Strength to Weight: Bending, points 47
16 to 18
Thermal Diffusivity, mm2/s 55
8.2
Thermal Shock Resistance, points 12
16 to 21

Alloy Composition


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Aluminum (Al), % 1.8 to 2.6
0
Copper (Cu), % 0 to 0.010
61.7 to 67.8
Iron (Fe), % 0 to 0.0050
1.7 to 2.3
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 95.2 to 97.4
0
Manganese (Mn), % 0.1 to 0.7
1.5 to 2.5
Nickel (Ni), % 0 to 0.0020
29 to 32
Silicon (Si), % 0.7 to 1.2
0
Zinc (Zn), % 0 to 0.2
0 to 1.0
Residuals, % 0 to 0.010
0 to 0.5