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C16500 Copper vs. ZK51A Magnesium

C16500 copper 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 C16500 copper and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
45
Elongation at Break, % 1.5 to 53
4.7
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
18
Shear Strength, MPa 200 to 310
160
Tensile Strength: Ultimate (UTS), MPa 280 to 530
240
Tensile Strength: Yield (Proof), MPa 97 to 520
150

Thermal Properties

Latent Heat of Fusion, J/g 210
340
Maximum Temperature: Mechanical, °C 340
120
Melting Completion (Liquidus), °C 1070
640
Melting Onset (Solidus), °C 1010
550
Specific Heat Capacity, J/kg-K 380
970
Thermal Conductivity, W/m-K 250
110
Thermal Expansion, µm/m-K 17
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
28
Electrical Conductivity: Equal Weight (Specific), % IACS 61
140

Otherwise Unclassified Properties

Base Metal Price, % relative 31
13
Density, g/cm3 8.9
1.8
Embodied Carbon, kg CO2/kg material 2.6
24
Embodied Energy, MJ/kg 42
160
Embodied Water, L/kg 320
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8 to 110
10
Resilience: Unit (Modulus of Resilience), kJ/m3 41 to 1160
260
Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 18
64
Strength to Weight: Axial, points 8.6 to 17
36
Strength to Weight: Bending, points 11 to 16
47
Thermal Diffusivity, mm2/s 74
61
Thermal Shock Resistance, points 9.8 to 19
15

Alloy Composition

Cadmium (Cd), % 0.6 to 1.0
0
Copper (Cu), % 97.8 to 98.9
0 to 0.1
Iron (Fe), % 0 to 0.020
0
Magnesium (Mg), % 0
93.1 to 95.9
Nickel (Ni), % 0
0 to 0.010
Tin (Sn), % 0.5 to 0.7
0
Zinc (Zn), % 0
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3