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C18700 Copper vs. ZE41A Magnesium

C18700 copper belongs to the copper alloys classification, while ZE41A magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 C18700 copper and the bottom bar is ZE41A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
45
Elongation at Break, % 9.0 to 9.6
3.3
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
18
Shear Strength, MPa 170 to 190
150
Tensile Strength: Ultimate (UTS), MPa 290 to 330
210
Tensile Strength: Yield (Proof), MPa 230 to 250
140

Thermal Properties

Latent Heat of Fusion, J/g 210
330
Maximum Temperature: Mechanical, °C 200
150
Melting Completion (Liquidus), °C 1080
640
Melting Onset (Solidus), °C 950
540
Specific Heat Capacity, J/kg-K 380
970
Thermal Conductivity, W/m-K 380
110
Thermal Expansion, µm/m-K 17
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
27
Electrical Conductivity: Equal Weight (Specific), % IACS 99
130

Otherwise Unclassified Properties

Base Metal Price, % relative 30
18
Density, g/cm3 9.0
1.9
Embodied Carbon, kg CO2/kg material 2.6
24
Embodied Energy, MJ/kg 41
170
Embodied Water, L/kg 310
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 29
6.1
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
220
Stiffness to Weight: Axial, points 7.1
13
Stiffness to Weight: Bending, points 18
63
Strength to Weight: Axial, points 9.0 to 10
31
Strength to Weight: Bending, points 11 to 12
41
Thermal Diffusivity, mm2/s 110
59
Thermal Shock Resistance, points 10 to 12
12

Alloy Composition

Copper (Cu), % 98 to 99.2
0 to 0.1
Lead (Pb), % 0.8 to 1.5
0
Magnesium (Mg), % 0
91.7 to 95.4
Manganese (Mn), % 0
0 to 0.15
Nickel (Ni), % 0
0 to 0.010
Unspecified Rare Earths, % 0
0.75 to 1.8
Zinc (Zn), % 0
3.5 to 5.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3