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EN-MC65210 Magnesium vs. SAE-AISI M42 Steel

EN-MC65210 magnesium belongs to the magnesium alloys classification, while SAE-AISI M42 steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, 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-MC65210 magnesium and the bottom bar is SAE-AISI M42 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
78
Tensile Strength: Ultimate (UTS), MPa 270
810 to 2310

Thermal Properties

Latent Heat of Fusion, J/g 340
270
Melting Completion (Liquidus), °C 610
1540
Melting Onset (Solidus), °C 540
1490
Specific Heat Capacity, J/kg-K 970
450
Thermal Conductivity, W/m-K 110
20
Thermal Expansion, µm/m-K 26
12

Otherwise Unclassified Properties

Density, g/cm3 2.0
8.2
Embodied Carbon, kg CO2/kg material 27
7.4
Embodied Energy, MJ/kg 220
100

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 59
24
Strength to Weight: Axial, points 38
28 to 79
Strength to Weight: Bending, points 47
24 to 48
Thermal Diffusivity, mm2/s 58
5.4
Thermal Shock Resistance, points 17
25 to 71

Alloy Composition


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Carbon (C), % 0
1.1 to 1.2
Chromium (Cr), % 0
3.5 to 4.3
Cobalt (Co), % 0
7.8 to 8.8
Copper (Cu), % 0 to 0.030
0 to 0.25
Iron (Fe), % 0 to 0.010
76.3 to 81
Magnesium (Mg), % 92.6 to 95.6
0
Manganese (Mn), % 0 to 0.15
0.15 to 0.4
Molybdenum (Mo), % 0
9.0 to 10
Nickel (Ni), % 0 to 0.0050
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0.15 to 0.65
Silver (Ag), % 2.0 to 3.0
0
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
1.2 to 1.9
Unspecified Rare Earths, % 2.0 to 3.0
0
Vanadium (V), % 0
1.0 to 1.4
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0