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ZK40A Magnesium vs. C72700 Copper-nickel

ZK40A magnesium belongs to the magnesium alloys classification, while C72700 copper-nickel belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (1, 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 ZK40A magnesium and the bottom bar is C72700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 4.2
4.0 to 36
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
44
Shear Strength, MPa 160
310 to 620
Tensile Strength: Ultimate (UTS), MPa 280
460 to 1070
Tensile Strength: Yield (Proof), MPa 260
580 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 340
210
Maximum Temperature: Mechanical, °C 120
200
Melting Completion (Liquidus), °C 600
1100
Melting Onset (Solidus), °C 540
930
Specific Heat Capacity, J/kg-K 970
380
Thermal Conductivity, W/m-K 110
54
Thermal Expansion, µm/m-K 26
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 13
36
Density, g/cm3 1.8
8.8
Embodied Carbon, kg CO2/kg material 24
4.0
Embodied Energy, MJ/kg 160
62
Embodied Water, L/kg 950
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
20 to 380
Resilience: Unit (Modulus of Resilience), kJ/m3 740
1420 to 4770
Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 65
19
Strength to Weight: Axial, points 43
14 to 34
Strength to Weight: Bending, points 53
15 to 26
Thermal Diffusivity, mm2/s 62
16
Thermal Shock Resistance, points 17
16 to 38

Alloy Composition


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Copper (Cu), % 0
82.1 to 86
Iron (Fe), % 0
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 94.2 to 96.1
0 to 0.15
Manganese (Mn), % 0
0.050 to 0.3
Nickel (Ni), % 0
8.5 to 9.5
Niobium (Nb), % 0
0 to 0.1
Tin (Sn), % 0
5.5 to 6.5
Zinc (Zn), % 3.5 to 4.5
0 to 0.5
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.3