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CC140C Copper vs. EQ21A Magnesium

CC140C copper belongs to the copper alloys classification, while EQ21A magnesium belongs to the magnesium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, 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 CC140C copper and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
80
Elastic (Young's, Tensile) Modulus, GPa 120
44
Elongation at Break, % 11
2.4
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 44
17
Tensile Strength: Ultimate (UTS), MPa 340
250
Tensile Strength: Yield (Proof), MPa 230
190

Thermal Properties

Latent Heat of Fusion, J/g 210
340
Maximum Temperature: Mechanical, °C 200
160
Melting Completion (Liquidus), °C 1100
640
Melting Onset (Solidus), °C 1040
560
Specific Heat Capacity, J/kg-K 390
980
Thermal Conductivity, W/m-K 310
110
Thermal Expansion, µm/m-K 17
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 77
25
Electrical Conductivity: Equal Weight (Specific), % IACS 78
120

Otherwise Unclassified Properties

Base Metal Price, % relative 31
80
Density, g/cm3 8.9
1.9
Embodied Carbon, kg CO2/kg material 2.6
27
Embodied Energy, MJ/kg 41
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 34
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 220
410
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 18
63
Strength to Weight: Axial, points 10
37
Strength to Weight: Bending, points 12
47
Thermal Diffusivity, mm2/s 89
62
Thermal Shock Resistance, points 12
15

Alloy Composition

Chromium (Cr), % 0.4 to 1.2
0
Copper (Cu), % 98.8 to 99.6
0.050 to 0.1
Magnesium (Mg), % 0
93.9 to 96.8
Nickel (Ni), % 0
0 to 0.010
Silver (Ag), % 0
1.3 to 1.7
Unspecified Rare Earths, % 0
1.5 to 3.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3