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EN 1.1191 Steel vs. ISO-WD21150 Magnesium

EN 1.1191 steel belongs to the iron alloys classification, while ISO-WD21150 magnesium belongs to the magnesium alloys. There are 29 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 1.1191 steel and the bottom bar is ISO-WD21150 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 16 to 17
5.7 to 11
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
17
Shear Strength, MPa 380 to 430
150 to 170
Tensile Strength: Ultimate (UTS), MPa 630 to 700
240 to 290
Tensile Strength: Yield (Proof), MPa 310 to 440
120 to 200

Thermal Properties

Latent Heat of Fusion, J/g 250
350
Maximum Temperature: Mechanical, °C 400
110
Melting Completion (Liquidus), °C 1460
600
Melting Onset (Solidus), °C 1420
550
Specific Heat Capacity, J/kg-K 470
990
Thermal Conductivity, W/m-K 48
100
Thermal Expansion, µm/m-K 12
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
19
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
100

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
12
Density, g/cm3 7.8
1.7
Embodied Carbon, kg CO2/kg material 1.4
23
Embodied Energy, MJ/kg 19
160
Embodied Water, L/kg 47
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 100
15 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 510
160 to 460
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
70
Strength to Weight: Axial, points 22 to 25
40 to 48
Strength to Weight: Bending, points 21 to 22
52 to 58
Thermal Diffusivity, mm2/s 13
60
Thermal Shock Resistance, points 20 to 22
15 to 17

Alloy Composition

Aluminum (Al), % 0
2.4 to 3.6
Carbon (C), % 0.42 to 0.5
0
Chromium (Cr), % 0 to 0.4
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 97.3 to 99.08
0 to 0.0050
Magnesium (Mg), % 0
94 to 97
Manganese (Mn), % 0.5 to 0.8
0.15 to 0.4
Molybdenum (Mo), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.4
0 to 0.0050
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.4
0 to 0.1
Sulfur (S), % 0 to 0.035
0
Zinc (Zn), % 0
0.5 to 1.5
Residuals, % 0
0 to 0.3