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EN-MC65120 Magnesium vs. SAE-AISI S6 Steel

EN-MC65120 magnesium belongs to the magnesium alloys classification, while SAE-AISI S6 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, 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-MC65120 magnesium and the bottom bar is SAE-AISI S6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
72
Tensile Strength: Ultimate (UTS), MPa 160
670 to 1920

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Melting Completion (Liquidus), °C 590
1430
Melting Onset (Solidus), °C 520
1390
Specific Heat Capacity, J/kg-K 970
480
Thermal Conductivity, W/m-K 100
41
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 25
3.2
Density, g/cm3 1.9
7.7
Embodied Carbon, kg CO2/kg material 25
2.3
Embodied Energy, MJ/kg 190
33
Embodied Water, L/kg 930
56

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 62
25
Strength to Weight: Axial, points 23
24 to 70
Strength to Weight: Bending, points 34
22 to 45
Thermal Diffusivity, mm2/s 56
11
Thermal Shock Resistance, points 9.8
22 to 64

Alloy Composition

Carbon (C), % 0
0.4 to 0.5
Chromium (Cr), % 0
1.2 to 1.5
Copper (Cu), % 0 to 0.030
0 to 0.25
Iron (Fe), % 0 to 0.010
92.8 to 94.7
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
1.2 to 1.5
Molybdenum (Mo), % 0
0.3 to 0.5
Nickel (Ni), % 0 to 0.0050
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
2.0 to 2.5
Sulfur (S), % 0
0 to 0.030
Unspecified Rare Earths, % 2.5 to 4.0
0
Vanadium (V), % 0
0.2 to 0.4
Zinc (Zn), % 2.0 to 3.0
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0