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EN-MC21210 Magnesium vs. S32950 Stainless Steel

EN-MC21210 magnesium belongs to the magnesium alloys classification, while S32950 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, 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-MC21210 magnesium and the bottom bar is S32950 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 48
260
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 14
17
Fatigue Strength, MPa 70
330
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 17
80
Shear Strength, MPa 110
480
Tensile Strength: Ultimate (UTS), MPa 190
780
Tensile Strength: Yield (Proof), MPa 90
550

Thermal Properties

Latent Heat of Fusion, J/g 350
300
Maximum Temperature: Mechanical, °C 100
1100
Melting Completion (Liquidus), °C 600
1430
Melting Onset (Solidus), °C 570
1390
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 120
16
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
17
Density, g/cm3 1.6
7.7
Embodied Carbon, kg CO2/kg material 24
3.4
Embodied Energy, MJ/kg 160
47
Embodied Water, L/kg 980
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
120
Resilience: Unit (Modulus of Resilience), kJ/m3 92
730
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 32
28
Strength to Weight: Bending, points 44
24
Thermal Diffusivity, mm2/s 76
4.3
Thermal Shock Resistance, points 11
21

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
26 to 29
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
60.3 to 69.4
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
0 to 2.0
Molybdenum (Mo), % 0
1.0 to 2.5
Nickel (Ni), % 0 to 0.0020
3.5 to 5.2
Nitrogen (N), % 0
0.15 to 0.35
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.1
0 to 0.6
Sulfur (S), % 0
0 to 0.010
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0