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ISO-WD32250 Magnesium vs. EN 1.3975 Stainless Steel

ISO-WD32250 magnesium belongs to the magnesium alloys classification, while EN 1.3975 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, 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 ISO-WD32250 magnesium and the bottom bar is EN 1.3975 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 4.5 to 8.6
27
Fatigue Strength, MPa 170 to 210
230
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
76
Tensile Strength: Ultimate (UTS), MPa 310 to 330
660
Tensile Strength: Yield (Proof), MPa 240 to 290
320

Thermal Properties

Latent Heat of Fusion, J/g 340
340
Maximum Temperature: Mechanical, °C 120
910
Melting Completion (Liquidus), °C 600
1360
Melting Onset (Solidus), °C 550
1320
Specific Heat Capacity, J/kg-K 980
500
Thermal Expansion, µm/m-K 26
16

Otherwise Unclassified Properties

Base Metal Price, % relative 13
15
Density, g/cm3 1.8
7.5
Embodied Carbon, kg CO2/kg material 24
3.3
Embodied Energy, MJ/kg 160
47
Embodied Water, L/kg 950
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 26
150
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 930
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 67
26
Strength to Weight: Axial, points 49 to 51
24
Strength to Weight: Bending, points 58 to 60
22
Thermal Shock Resistance, points 19 to 20
15

Alloy Composition


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Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0
16 to 18
Iron (Fe), % 0
58.2 to 65.4
Magnesium (Mg), % 94.9 to 97.1
0
Manganese (Mn), % 0
7.0 to 9.0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
3.5 to 4.5
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 2.5 to 4.0
0
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0 to 0.3
0