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C70400 Copper-nickel vs. ZK51A Magnesium

C70400 copper-nickel belongs to the copper alloys classification, while ZK51A magnesium belongs to the magnesium 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 C70400 copper-nickel and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
45
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 45
18
Tensile Strength: Ultimate (UTS), MPa 300 to 310
240
Tensile Strength: Yield (Proof), MPa 95 to 230
150

Thermal Properties

Latent Heat of Fusion, J/g 210
340
Maximum Temperature: Mechanical, °C 210
120
Melting Completion (Liquidus), °C 1120
640
Melting Onset (Solidus), °C 1060
550
Specific Heat Capacity, J/kg-K 390
970
Thermal Conductivity, W/m-K 64
110
Thermal Expansion, µm/m-K 17
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
28
Electrical Conductivity: Equal Weight (Specific), % IACS 14
140

Otherwise Unclassified Properties

Base Metal Price, % relative 32
13
Density, g/cm3 8.9
1.8
Embodied Carbon, kg CO2/kg material 3.0
24
Embodied Energy, MJ/kg 47
160
Embodied Water, L/kg 300
940

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 38 to 220
260
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 19
64
Strength to Weight: Axial, points 9.3 to 9.8
36
Strength to Weight: Bending, points 11 to 12
47
Thermal Diffusivity, mm2/s 18
61
Thermal Shock Resistance, points 10 to 11
15

Alloy Composition

Copper (Cu), % 89.8 to 93.6
0 to 0.1
Iron (Fe), % 1.3 to 1.7
0
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0
93.1 to 95.9
Manganese (Mn), % 0.3 to 0.8
0
Nickel (Ni), % 4.8 to 6.2
0 to 0.010
Zinc (Zn), % 0 to 1.0
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3