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EN-MC21320 Magnesium vs. EN 1.7244 Steel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while EN 1.7244 steel belongs to the iron alloys. There are 25 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 EN-MC21320 magnesium and the bottom bar is EN 1.7244 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
140 to 180
Elastic (Young's, Tensile) Modulus, GPa 45
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Tensile Strength: Ultimate (UTS), MPa 230
470 to 1390

Thermal Properties

Latent Heat of Fusion, J/g 370
250
Maximum Temperature: Mechanical, °C 110
420
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 530
1420
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 66
44
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 91
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.5
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 23
1.5
Embodied Energy, MJ/kg 160
20
Embodied Water, L/kg 980
51

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 38
17 to 49
Strength to Weight: Bending, points 50
17 to 35
Thermal Diffusivity, mm2/s 40
12
Thermal Shock Resistance, points 13
14 to 41

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0.15 to 0.21
Chromium (Cr), % 0
0.9 to 1.2
Copper (Cu), % 0 to 0.010
0 to 0.25
Iron (Fe), % 0 to 0.0050
96.8 to 98.2
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0.6 to 0.9
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0 to 0.0020
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0.5 to 1.5
0 to 0.3
Sulfur (S), % 0
0.020 to 0.040
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0