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C70620 Copper-nickel vs. ZK61A Magnesium

C70620 copper-nickel belongs to the copper alloys classification, while ZK61A magnesium belongs to the magnesium alloys. There are 22 material properties with values for both materials. Properties with values for just one material (11, 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 C70620 copper-nickel and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
46
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 46
18
Tensile Strength: Ultimate (UTS), MPa 300 to 570
290 to 310

Thermal Properties

Latent Heat of Fusion, J/g 220
330
Maximum Temperature: Mechanical, °C 220
120
Melting Completion (Liquidus), °C 1120
640
Melting Onset (Solidus), °C 1060
530
Specific Heat Capacity, J/kg-K 390
960
Thermal Conductivity, W/m-K 49
120
Thermal Expansion, µm/m-K 17
27

Otherwise Unclassified Properties

Base Metal Price, % relative 33
13
Density, g/cm3 8.9
1.9
Embodied Carbon, kg CO2/kg material 3.4
23
Embodied Energy, MJ/kg 51
160
Embodied Water, L/kg 300
940

Common Calculations

Stiffness to Weight: Axial, points 7.7
13
Stiffness to Weight: Bending, points 19
62
Strength to Weight: Axial, points 9.3 to 18
42 to 45
Strength to Weight: Bending, points 11 to 17
50 to 53
Thermal Diffusivity, mm2/s 14
65
Thermal Shock Resistance, points 10 to 20
17 to 18

Alloy Composition

Carbon (C), % 0 to 0.050
0
Copper (Cu), % 86.5 to 90
0 to 0.1
Iron (Fe), % 1.0 to 1.8
0
Lead (Pb), % 0 to 0.020
0
Magnesium (Mg), % 0
92.1 to 93.9
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 9.0 to 11
0 to 0.010
Phosphorus (P), % 0 to 0.2
0
Sulfur (S), % 0 to 0.020
0
Zinc (Zn), % 0 to 0.5
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3