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EN-MC35110 Magnesium vs. SAE-AISI M4 Steel

EN-MC35110 magnesium belongs to the magnesium alloys classification, while SAE-AISI M4 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, 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-MC35110 magnesium and the bottom bar is SAE-AISI M4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
76
Tensile Strength: Ultimate (UTS), MPa 230
770 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 330
260
Melting Completion (Liquidus), °C 600
1610
Melting Onset (Solidus), °C 520
1560
Specific Heat Capacity, J/kg-K 970
440
Thermal Conductivity, W/m-K 110
25
Thermal Expansion, µm/m-K 26
12

Otherwise Unclassified Properties

Base Metal Price, % relative 18
25
Density, g/cm3 1.9
8.3
Embodied Carbon, kg CO2/kg material 24
14
Embodied Energy, MJ/kg 170
210
Embodied Water, L/kg 940
110

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 63
23
Strength to Weight: Axial, points 34
26 to 72
Strength to Weight: Bending, points 44
23 to 45
Thermal Diffusivity, mm2/s 61
6.9
Thermal Shock Resistance, points 14
24 to 68

Alloy Composition


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Carbon (C), % 0
1.3 to 1.4
Chromium (Cr), % 0
3.8 to 4.8
Copper (Cu), % 0 to 0.030
0 to 0.25
Iron (Fe), % 0 to 0.010
75.9 to 81.4
Magnesium (Mg), % 92 to 95.4
0
Manganese (Mn), % 0 to 0.15
0.15 to 0.4
Molybdenum (Mo), % 0
4.3 to 5.5
Nickel (Ni), % 0 to 0.0050
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0.2 to 0.45
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
5.3 to 6.5
Unspecified Rare Earths, % 0.75 to 1.8
0
Vanadium (V), % 0
3.8 to 4.5
Zinc (Zn), % 3.5 to 5.0
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0