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EN-MC65220 Magnesium vs. C81400 Copper

EN-MC65220 magnesium belongs to the magnesium alloys classification, while C81400 copper belongs to the copper alloys. There are 27 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 EN-MC65220 magnesium and the bottom bar is C81400 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
120
Elongation at Break, % 2.2
11
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
41
Tensile Strength: Ultimate (UTS), MPa 270
370
Tensile Strength: Yield (Proof), MPa 200
250

Thermal Properties

Latent Heat of Fusion, J/g 340
210
Maximum Temperature: Mechanical, °C 160
200
Melting Completion (Liquidus), °C 610
1090
Melting Onset (Solidus), °C 550
1070
Specific Heat Capacity, J/kg-K 980
390
Thermal Conductivity, W/m-K 110
260
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
60
Electrical Conductivity: Equal Weight (Specific), % IACS 120
61

Otherwise Unclassified Properties

Base Metal Price, % relative 80
33
Density, g/cm3 1.9
8.9
Embodied Carbon, kg CO2/kg material 27
2.8
Embodied Energy, MJ/kg 210
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
36
Resilience: Unit (Modulus of Resilience), kJ/m3 450
260
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 62
18
Strength to Weight: Axial, points 40
11
Strength to Weight: Bending, points 49
13
Thermal Diffusivity, mm2/s 61
75
Thermal Shock Resistance, points 17
13

Alloy Composition

Beryllium (Be), % 0
0.020 to 0.1
Chromium (Cr), % 0
0.6 to 1.0
Copper (Cu), % 0.050 to 0.1
98.4 to 99.38
Iron (Fe), % 0 to 0.010
0
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.010
0
Silver (Ag), % 1.3 to 1.7
0
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.5