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ZK40A Magnesium vs. CC140C Copper

ZK40A magnesium belongs to the magnesium alloys classification, while CC140C copper belongs to the copper alloys. There are 28 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 ZK40A magnesium and the bottom bar is CC140C copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 4.2
11
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
44
Tensile Strength: Ultimate (UTS), MPa 280
340
Tensile Strength: Yield (Proof), MPa 260
230

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
1040
Specific Heat Capacity, J/kg-K 970
390
Thermal Conductivity, W/m-K 110
310
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
77
Electrical Conductivity: Equal Weight (Specific), % IACS 130
78

Otherwise Unclassified Properties

Base Metal Price, % relative 13
31
Density, g/cm3 1.8
8.9
Embodied Carbon, kg CO2/kg material 24
2.6
Embodied Energy, MJ/kg 160
41
Embodied Water, L/kg 950
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
34
Resilience: Unit (Modulus of Resilience), kJ/m3 740
220
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 65
18
Strength to Weight: Axial, points 43
10
Strength to Weight: Bending, points 53
12
Thermal Diffusivity, mm2/s 62
89
Thermal Shock Resistance, points 17
12

Alloy Composition


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Chromium (Cr), % 0
0.4 to 1.2
Copper (Cu), % 0
98.8 to 99.6
Magnesium (Mg), % 94.2 to 96.1
0
Zinc (Zn), % 3.5 to 4.5
0
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0