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EN-MC21230 Magnesium vs. EN 1.7230 Steel

EN-MC21230 magnesium belongs to the magnesium alloys classification, while EN 1.7230 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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-MC21230 magnesium and the bottom bar is EN 1.7230 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
220 to 270
Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 10
11 to 12
Fatigue Strength, MPa 99
320 to 460
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Tensile Strength: Ultimate (UTS), MPa 220
720 to 910
Tensile Strength: Yield (Proof), MPa 140
510 to 740

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Maximum Temperature: Mechanical, °C 120
420
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 520
1420
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 72
44
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 63
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.4
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 23
1.5
Embodied Energy, MJ/kg 160
20
Embodied Water, L/kg 990
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
79 to 97
Resilience: Unit (Modulus of Resilience), kJ/m3 200
700 to 1460
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 71
24
Strength to Weight: Axial, points 36
26 to 32
Strength to Weight: Bending, points 48
23 to 27
Thermal Diffusivity, mm2/s 43
12
Thermal Shock Resistance, points 13
21 to 27

Alloy Composition

Aluminum (Al), % 5.5 to 8.5
0
Carbon (C), % 0
0.3 to 0.37
Chromium (Cr), % 0
0.8 to 1.2
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
96.7 to 98.3
Magnesium (Mg), % 90.5 to 94.4
0
Manganese (Mn), % 0.1 to 0.6
0.5 to 0.8
Molybdenum (Mo), % 0
0.15 to 0.3
Nickel (Ni), % 0 to 0.0020
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.1
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.010
0