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C19800 Copper vs. ZK51A Magnesium

C19800 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 (2, 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 C19800 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, % 9.0 to 12
4.7
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
18
Shear Strength, MPa 260 to 330
160
Tensile Strength: Ultimate (UTS), MPa 430 to 550
240
Tensile Strength: Yield (Proof), MPa 420 to 550
150

Thermal Properties

Latent Heat of Fusion, J/g 210
340
Maximum Temperature: Mechanical, °C 200
120
Melting Completion (Liquidus), °C 1070
640
Melting Onset (Solidus), °C 1050
550
Specific Heat Capacity, J/kg-K 390
970
Thermal Conductivity, W/m-K 260
110
Thermal Expansion, µm/m-K 18
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 61
28
Electrical Conductivity: Equal Weight (Specific), % IACS 62
140

Otherwise Unclassified Properties

Base Metal Price, % relative 30
13
Density, g/cm3 8.9
1.8
Embodied Carbon, kg CO2/kg material 2.8
24
Embodied Energy, MJ/kg 43
160
Embodied Water, L/kg 320
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 49 to 52
10
Resilience: Unit (Modulus of Resilience), kJ/m3 770 to 1320
260
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
64
Strength to Weight: Axial, points 14 to 17
36
Strength to Weight: Bending, points 14 to 17
47
Thermal Diffusivity, mm2/s 75
61
Thermal Shock Resistance, points 15 to 20
15

Alloy Composition

Copper (Cu), % 95.7 to 99.47
0 to 0.1
Iron (Fe), % 0.020 to 0.5
0
Magnesium (Mg), % 0.1 to 1.0
93.1 to 95.9
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0.010 to 0.1
0
Tin (Sn), % 0.1 to 1.0
0
Zinc (Zn), % 0.3 to 1.5
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3