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AS41B Magnesium vs. C70250 Copper

AS41B magnesium belongs to the magnesium alloys classification, while C70250 copper belongs to the copper alloys. There are 24 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 AS41B magnesium and the bottom bar is C70250 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
44
Tensile Strength: Ultimate (UTS), MPa 210
520 to 740

Thermal Properties

Latent Heat of Fusion, J/g 370
220
Maximum Temperature: Mechanical, °C 110
210
Melting Completion (Liquidus), °C 620
1100
Melting Onset (Solidus), °C 570
1080
Specific Heat Capacity, J/kg-K 1000
390
Thermal Conductivity, W/m-K 68
170
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
36 to 50
Electrical Conductivity: Equal Weight (Specific), % IACS 92
37 to 51

Otherwise Unclassified Properties

Base Metal Price, % relative 12
31
Density, g/cm3 1.7
8.9
Embodied Carbon, kg CO2/kg material 23
2.9
Embodied Energy, MJ/kg 160
45
Embodied Water, L/kg 980
310

Common Calculations

Stiffness to Weight: Axial, points 15
7.4
Stiffness to Weight: Bending, points 72
18
Strength to Weight: Axial, points 35
16 to 23
Strength to Weight: Bending, points 47
16 to 21
Thermal Diffusivity, mm2/s 41
49
Thermal Shock Resistance, points 13
18 to 26

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Copper (Cu), % 0 to 0.020
92.7 to 97.5
Iron (Fe), % 0 to 0.0035
0
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 92.7 to 95.7
0.050 to 0.3
Manganese (Mn), % 0.35 to 0.7
0 to 0.1
Nickel (Ni), % 0 to 0.0020
2.2 to 4.2
Silicon (Si), % 0.5 to 1.5
0.25 to 1.2
Zinc (Zn), % 0 to 0.12
0 to 1.0
Residuals, % 0
0 to 0.5