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EN-MC65210 Magnesium vs. S39274 Stainless Steel

EN-MC65210 magnesium belongs to the magnesium alloys classification, while S39274 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, 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-MC65210 magnesium and the bottom bar is S39274 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
270
Elastic (Young's, Tensile) Modulus, GPa 44
210
Elongation at Break, % 2.8
17
Fatigue Strength, MPa 110
380
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 17
81
Shear Strength, MPa 150
560
Tensile Strength: Ultimate (UTS), MPa 270
900
Tensile Strength: Yield (Proof), MPa 200
620

Thermal Properties

Latent Heat of Fusion, J/g 340
300
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 610
1480
Melting Onset (Solidus), °C 540
1430
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
16
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.4

Otherwise Unclassified Properties

Density, g/cm3 2.0
8.0
Embodied Carbon, kg CO2/kg material 27
4.3
Embodied Energy, MJ/kg 220
60

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
140
Resilience: Unit (Modulus of Resilience), kJ/m3 450
940
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 59
25
Strength to Weight: Axial, points 38
32
Strength to Weight: Bending, points 47
26
Thermal Diffusivity, mm2/s 58
4.2
Thermal Shock Resistance, points 17
25

Alloy Composition


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Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
24 to 26
Copper (Cu), % 0 to 0.030
0.2 to 0.8
Iron (Fe), % 0 to 0.010
57 to 65.6
Magnesium (Mg), % 92.6 to 95.6
0
Manganese (Mn), % 0 to 0.15
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0 to 0.0050
6.0 to 8.0
Nitrogen (N), % 0
0.24 to 0.32
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0 to 0.8
Silver (Ag), % 2.0 to 3.0
0
Sulfur (S), % 0
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5
Unspecified Rare Earths, % 2.0 to 3.0
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0