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AS41A Magnesium vs. CC140C Copper

AS41A magnesium belongs to the magnesium alloys classification, while CC140C copper belongs to the copper alloys. There are 28 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 AS41A magnesium and the bottom bar is CC140C copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 11
11
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
44
Tensile Strength: Ultimate (UTS), MPa 230
340
Tensile Strength: Yield (Proof), MPa 140
230

Thermal Properties

Latent Heat of Fusion, J/g 370
210
Maximum Temperature: Mechanical, °C 110
200
Melting Completion (Liquidus), °C 620
1100
Melting Onset (Solidus), °C 570
1040
Specific Heat Capacity, J/kg-K 1000
390
Thermal Conductivity, W/m-K 68
310
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
77
Electrical Conductivity: Equal Weight (Specific), % IACS 92
78

Otherwise Unclassified Properties

Base Metal Price, % relative 12
31
Density, g/cm3 1.6
8.9
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 160
41
Embodied Water, L/kg 980
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
34
Resilience: Unit (Modulus of Resilience), kJ/m3 220
220
Stiffness to Weight: Axial, points 15
7.3
Stiffness to Weight: Bending, points 72
18
Strength to Weight: Axial, points 38
10
Strength to Weight: Bending, points 50
12
Thermal Diffusivity, mm2/s 41
89
Thermal Shock Resistance, points 14
12

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Chromium (Cr), % 0
0.4 to 1.2
Copper (Cu), % 0 to 0.060
98.8 to 99.6
Magnesium (Mg), % 92.8 to 95.8
0
Manganese (Mn), % 0.2 to 0.5
0
Nickel (Ni), % 0 to 0.030
0
Silicon (Si), % 0.5 to 1.5
0
Zinc (Zn), % 0 to 0.12
0