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EN-MC95310 Magnesium vs. S82031 Stainless Steel

EN-MC95310 magnesium belongs to the magnesium alloys classification, while S82031 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 S82031 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 2.2
39
Fatigue Strength, MPa 110
490
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
78
Shear Strength, MPa 160
540
Tensile Strength: Ultimate (UTS), MPa 280
780
Tensile Strength: Yield (Proof), MPa 190
570

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 170
980
Melting Completion (Liquidus), °C 650
1430
Melting Onset (Solidus), °C 540
1390
Specific Heat Capacity, J/kg-K 960
480
Thermal Conductivity, W/m-K 51
15
Thermal Expansion, µm/m-K 25
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 50
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 34
13
Density, g/cm3 1.9
7.7
Embodied Carbon, kg CO2/kg material 29
2.8
Embodied Energy, MJ/kg 260
39
Embodied Water, L/kg 900
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
280
Resilience: Unit (Modulus of Resilience), kJ/m3 420
820
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 61
25
Strength to Weight: Axial, points 40
28
Strength to Weight: Bending, points 49
24
Thermal Diffusivity, mm2/s 28
3.9
Thermal Shock Resistance, points 18
22

Alloy Composition


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Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0
19 to 22
Copper (Cu), % 0 to 0.030
0 to 1.0
Iron (Fe), % 0 to 0.010
68 to 78.3
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 88.9 to 93.4
0
Manganese (Mn), % 0 to 0.15
0 to 2.5
Molybdenum (Mo), % 0
0.6 to 1.4
Nickel (Ni), % 0 to 0.0050
2.0 to 4.0
Nitrogen (N), % 0
0.14 to 0.24
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.010
0 to 0.8
Sulfur (S), % 0
0 to 0.0050
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