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ISO-WD32250 Magnesium vs. ASTM B631 Class C

ISO-WD32250 magnesium belongs to the magnesium alloys classification, while ASTM B631 class C belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (15, 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 ISO-WD32250 magnesium and the bottom bar is ASTM B631 class C.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
180 to 190
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
66 to 71

Thermal Properties

Latent Heat of Fusion, J/g 340
140 to 150
Melting Completion (Liquidus), °C 600
2090 to 2230
Specific Heat Capacity, J/kg-K 980
180
Thermal Conductivity, W/m-K 130
450 to 490
Thermal Expansion, µm/m-K 26
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
55 to 63
Electrical Conductivity: Equal Weight (Specific), % IACS 130
36 to 43

Otherwise Unclassified Properties

Density, g/cm3 1.8
13 to 14
Embodied Carbon, kg CO2/kg material 24
55 to 59
Embodied Energy, MJ/kg 160
860 to 920

Common Calculations

Stiffness to Weight: Axial, points 14
7.4 to 7.6
Stiffness to Weight: Bending, points 67
14
Thermal Diffusivity, mm2/s 72
180 to 200