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C72700 Copper-nickel vs. ZE41A Magnesium

C72700 copper-nickel belongs to the copper alloys classification, while ZE41A magnesium belongs to the magnesium alloys. There are 29 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 C72700 copper-nickel and the bottom bar is ZE41A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
45
Elongation at Break, % 4.0 to 36
3.3
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 44
18
Shear Strength, MPa 310 to 620
150
Tensile Strength: Ultimate (UTS), MPa 460 to 1070
210
Tensile Strength: Yield (Proof), MPa 580 to 1060
140

Thermal Properties

Latent Heat of Fusion, J/g 210
330
Maximum Temperature: Mechanical, °C 200
150
Melting Completion (Liquidus), °C 1100
640
Melting Onset (Solidus), °C 930
540
Specific Heat Capacity, J/kg-K 380
970
Thermal Conductivity, W/m-K 54
110
Thermal Expansion, µm/m-K 17
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
27
Electrical Conductivity: Equal Weight (Specific), % IACS 11
130

Otherwise Unclassified Properties

Base Metal Price, % relative 36
18
Density, g/cm3 8.8
1.9
Embodied Carbon, kg CO2/kg material 4.0
24
Embodied Energy, MJ/kg 62
170
Embodied Water, L/kg 350
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 380
6.1
Resilience: Unit (Modulus of Resilience), kJ/m3 1420 to 4770
220
Stiffness to Weight: Axial, points 7.4
13
Stiffness to Weight: Bending, points 19
63
Strength to Weight: Axial, points 14 to 34
31
Strength to Weight: Bending, points 15 to 26
41
Thermal Diffusivity, mm2/s 16
59
Thermal Shock Resistance, points 16 to 38
12

Alloy Composition

Copper (Cu), % 82.1 to 86
0 to 0.1
Iron (Fe), % 0 to 0.5
0
Lead (Pb), % 0 to 0.020
0
Magnesium (Mg), % 0 to 0.15
91.7 to 95.4
Manganese (Mn), % 0.050 to 0.3
0 to 0.15
Nickel (Ni), % 8.5 to 9.5
0 to 0.010
Niobium (Nb), % 0 to 0.1
0
Tin (Sn), % 5.5 to 6.5
0
Unspecified Rare Earths, % 0
0.75 to 1.8
Zinc (Zn), % 0 to 0.5
3.5 to 5.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3