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EN-MC21320 Magnesium vs. C71000 Copper-nickel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while C71000 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-MC21320 magnesium and the bottom bar is C71000 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 18
49
Tensile Strength: Ultimate (UTS), MPa 230
320 to 560

Thermal Properties

Latent Heat of Fusion, J/g 370
230
Maximum Temperature: Mechanical, °C 110
240
Melting Completion (Liquidus), °C 600
1200
Melting Onset (Solidus), °C 530
1150
Specific Heat Capacity, J/kg-K 1000
400
Thermal Conductivity, W/m-K 66
43
Thermal Expansion, µm/m-K 26
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
6.5
Electrical Conductivity: Equal Weight (Specific), % IACS 91
6.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
37
Density, g/cm3 1.6
8.9
Embodied Carbon, kg CO2/kg material 23
4.3
Embodied Energy, MJ/kg 160
63
Embodied Water, L/kg 980
290

Common Calculations

Stiffness to Weight: Axial, points 15
8.2
Stiffness to Weight: Bending, points 72
19
Strength to Weight: Axial, points 38
10 to 18
Strength to Weight: Bending, points 50
12 to 17
Thermal Diffusivity, mm2/s 40
12
Thermal Shock Resistance, points 13
12 to 20

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Copper (Cu), % 0 to 0.010
73.5 to 80.5
Iron (Fe), % 0 to 0.0050
0.5 to 1.0
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0 to 1.0
Nickel (Ni), % 0 to 0.0020
19 to 23
Silicon (Si), % 0.5 to 1.5
0
Zinc (Zn), % 0 to 0.2
0 to 1.0
Residuals, % 0 to 0.010
0 to 0.5