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EN-MC35110 Magnesium vs. S31277 Stainless Steel

EN-MC35110 magnesium belongs to the magnesium alloys classification, while S31277 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 S31277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
210
Elongation at Break, % 3.1
45
Fatigue Strength, MPa 110
380
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
80
Shear Strength, MPa 130
600
Tensile Strength: Ultimate (UTS), MPa 230
860
Tensile Strength: Yield (Proof), MPa 150
410

Thermal Properties

Latent Heat of Fusion, J/g 330
310
Maximum Temperature: Mechanical, °C 140
1100
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 520
1410
Specific Heat Capacity, J/kg-K 970
460
Thermal Expansion, µm/m-K 26
16

Otherwise Unclassified Properties

Base Metal Price, % relative 18
36
Density, g/cm3 1.9
8.1
Embodied Carbon, kg CO2/kg material 24
6.7
Embodied Energy, MJ/kg 170
90
Embodied Water, L/kg 940
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
320
Resilience: Unit (Modulus of Resilience), kJ/m3 260
410
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 63
24
Strength to Weight: Axial, points 34
29
Strength to Weight: Bending, points 44
25
Thermal Shock Resistance, points 14
19

Alloy Composition


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Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0
20.5 to 23
Copper (Cu), % 0 to 0.030
0.5 to 1.5
Iron (Fe), % 0 to 0.010
35.5 to 46.2
Magnesium (Mg), % 92 to 95.4
0
Manganese (Mn), % 0 to 0.15
0 to 3.0
Molybdenum (Mo), % 0
6.5 to 8.0
Nickel (Ni), % 0 to 0.0050
26 to 28
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0 to 0.5
Sulfur (S), % 0
0 to 0.010
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