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ISO-WD32250 Magnesium vs. EN 1.4740 Stainless Steel

ISO-WD32250 magnesium belongs to the magnesium alloys classification, while EN 1.4740 stainless steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (12, 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 1.4740 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 4.5 to 8.6
22
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77

Thermal Properties

Latent Heat of Fusion, J/g 340
300
Maximum Temperature: Mechanical, °C 120
900
Melting Completion (Liquidus), °C 600
1420
Melting Onset (Solidus), °C 550
1370
Specific Heat Capacity, J/kg-K 980
490
Thermal Conductivity, W/m-K 130
18
Thermal Expansion, µm/m-K 26
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 1.8
7.6
Embodied Carbon, kg CO2/kg material 24
2.3
Embodied Energy, MJ/kg 160
32
Embodied Water, L/kg 950
120

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 67
25
Thermal Diffusivity, mm2/s 72
4.8

Alloy Composition

Carbon (C), % 0
0.3 to 0.5
Chromium (Cr), % 0
16 to 19
Iron (Fe), % 0
75.4 to 82.7
Magnesium (Mg), % 94.9 to 97.1
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
1.0 to 2.5
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