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EN-MC95310 Magnesium vs. S31730 Stainless Steel

EN-MC95310 magnesium belongs to the magnesium alloys classification, while S31730 stainless steel belongs to the iron alloys. There are 27 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-MC95310 magnesium and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85
180
Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 2.2
40
Fatigue Strength, MPa 110
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 160
370
Tensile Strength: Ultimate (UTS), MPa 280
540
Tensile Strength: Yield (Proof), MPa 190
200

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 170
990
Melting Completion (Liquidus), °C 650
1430
Melting Onset (Solidus), °C 540
1390
Specific Heat Capacity, J/kg-K 960
470
Thermal Expansion, µm/m-K 25
16

Otherwise Unclassified Properties

Base Metal Price, % relative 34
24
Density, g/cm3 1.9
8.0
Embodied Carbon, kg CO2/kg material 29
4.6
Embodied Energy, MJ/kg 260
63
Embodied Water, L/kg 900
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
170
Resilience: Unit (Modulus of Resilience), kJ/m3 420
99
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 61
24
Strength to Weight: Axial, points 40
19
Strength to Weight: Bending, points 49
18
Thermal Shock Resistance, points 18
12

Alloy Composition


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Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0 to 0.030
4.0 to 5.0
Iron (Fe), % 0 to 0.010
52.4 to 61
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 88.9 to 93.4
0
Manganese (Mn), % 0 to 0.15
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 0 to 0.0050
15 to 16.5
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.010
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Unspecified Rare Earths, % 1.5 to 4.0
0
Yttrium (Y), % 4.8 to 5.5
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0