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EN-MC35110 Magnesium vs. S31727 Stainless Steel

EN-MC35110 magnesium belongs to the magnesium alloys classification, while S31727 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (8, 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 S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
190
Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 3.1
40
Fatigue Strength, MPa 110
240
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
78
Shear Strength, MPa 130
430
Tensile Strength: Ultimate (UTS), MPa 230
630
Tensile Strength: Yield (Proof), MPa 150
270

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 140
1010
Melting Completion (Liquidus), °C 600
1440
Melting Onset (Solidus), °C 520
1390
Specific Heat Capacity, J/kg-K 970
470
Thermal Expansion, µm/m-K 26
16

Otherwise Unclassified Properties

Base Metal Price, % relative 18
24
Density, g/cm3 1.9
8.0
Embodied Carbon, kg CO2/kg material 24
4.7
Embodied Energy, MJ/kg 170
64
Embodied Water, L/kg 940
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
200
Resilience: Unit (Modulus of Resilience), kJ/m3 260
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 63
24
Strength to Weight: Axial, points 34
22
Strength to Weight: Bending, points 44
20
Thermal Shock Resistance, points 14
14

Alloy Composition


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Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17.5 to 19
Copper (Cu), % 0 to 0.030
2.8 to 4.0
Iron (Fe), % 0 to 0.010
53.7 to 61.3
Magnesium (Mg), % 92 to 95.4
0
Manganese (Mn), % 0 to 0.15
0 to 1.0
Molybdenum (Mo), % 0
3.8 to 4.5
Nickel (Ni), % 0 to 0.0050
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Unspecified Rare Earths, % 0.75 to 1.8
0
Zinc (Zn), % 3.5 to 5.0
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0