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C72800 Copper-nickel vs. ZK51A Magnesium

C72800 copper-nickel belongs to the copper alloys classification, while ZK51A magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 C72800 copper-nickel and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
45
Elongation at Break, % 3.9 to 23
4.7
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 44
18
Shear Strength, MPa 330 to 740
160
Tensile Strength: Ultimate (UTS), MPa 520 to 1270
240
Tensile Strength: Yield (Proof), MPa 250 to 1210
150

Thermal Properties

Latent Heat of Fusion, J/g 210
340
Maximum Temperature: Mechanical, °C 200
120
Melting Completion (Liquidus), °C 1080
640
Melting Onset (Solidus), °C 920
550
Specific Heat Capacity, J/kg-K 380
970
Thermal Conductivity, W/m-K 55
110
Thermal Expansion, µm/m-K 17
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
28
Electrical Conductivity: Equal Weight (Specific), % IACS 11
140

Otherwise Unclassified Properties

Base Metal Price, % relative 38
13
Density, g/cm3 8.8
1.8
Embodied Carbon, kg CO2/kg material 4.4
24
Embodied Energy, MJ/kg 68
160
Embodied Water, L/kg 360
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 99
10
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 5650
260
Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 19
64
Strength to Weight: Axial, points 17 to 40
36
Strength to Weight: Bending, points 16 to 30
47
Thermal Diffusivity, mm2/s 17
61
Thermal Shock Resistance, points 19 to 45
15

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Antimony (Sb), % 0 to 0.020
0
Bismuth (Bi), % 0 to 0.0010
0
Boron (B), % 0 to 0.0010
0
Copper (Cu), % 78.3 to 82.8
0 to 0.1
Iron (Fe), % 0 to 0.5
0
Lead (Pb), % 0 to 0.0050
0
Magnesium (Mg), % 0.0050 to 0.15
93.1 to 95.9
Manganese (Mn), % 0.050 to 0.3
0
Nickel (Ni), % 9.5 to 10.5
0 to 0.010
Niobium (Nb), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.050
0
Sulfur (S), % 0 to 0.0025
0
Tin (Sn), % 7.5 to 8.5
0
Titanium (Ti), % 0 to 0.010
0
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