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ISO-WD32250 Magnesium vs. EN 1.8151 Steel

ISO-WD32250 magnesium belongs to the magnesium alloys classification, while EN 1.8151 steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, 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 1.8151 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
72
Tensile Strength: Ultimate (UTS), MPa 310 to 330
670 to 1940

Thermal Properties

Latent Heat of Fusion, J/g 340
270
Maximum Temperature: Mechanical, °C 120
410
Melting Completion (Liquidus), °C 600
1440
Melting Onset (Solidus), °C 550
1400
Specific Heat Capacity, J/kg-K 980
480
Thermal Conductivity, W/m-K 130
50
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 13
2.2
Density, g/cm3 1.8
7.7
Embodied Carbon, kg CO2/kg material 24
1.8
Embodied Energy, MJ/kg 160
25
Embodied Water, L/kg 950
49

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 67
25
Strength to Weight: Axial, points 49 to 51
24 to 70
Strength to Weight: Bending, points 58 to 60
22 to 45
Thermal Diffusivity, mm2/s 72
14
Thermal Shock Resistance, points 19 to 20
20 to 58

Alloy Composition


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Carbon (C), % 0
0.4 to 0.5
Chromium (Cr), % 0
0.4 to 0.8
Iron (Fe), % 0
95.9 to 97.2
Magnesium (Mg), % 94.9 to 97.1
0
Manganese (Mn), % 0
0.6 to 0.9
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
1.3 to 1.7
Sulfur (S), % 0
0 to 0.025
Vanadium (V), % 0
0.1 to 0.2
Zinc (Zn), % 2.5 to 4.0
0
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0 to 0.3
0