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EN-MC21210 Magnesium vs. EN 1.8918 Steel

EN-MC21210 magnesium belongs to the magnesium alloys classification, while EN 1.8918 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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-MC21210 magnesium and the bottom bar is EN 1.8918 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 48
190
Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 14
19
Fatigue Strength, MPa 70
330
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 110
400
Tensile Strength: Ultimate (UTS), MPa 190
640
Tensile Strength: Yield (Proof), MPa 90
490

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Maximum Temperature: Mechanical, °C 100
400
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 570
1420
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 120
46
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.5
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 24
1.7
Embodied Energy, MJ/kg 160
24
Embodied Water, L/kg 980
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
110
Resilience: Unit (Modulus of Resilience), kJ/m3 92
640
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 32
23
Strength to Weight: Bending, points 44
21
Thermal Diffusivity, mm2/s 76
12
Thermal Shock Resistance, points 11
19

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0.020 to 0.050
Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 0 to 0.010
0 to 0.7
Iron (Fe), % 0 to 0.0050
95.2 to 98.9
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
1.1 to 1.7
Molybdenum (Mo), % 0
0 to 0.1
Nickel (Ni), % 0 to 0.0020
0 to 0.8
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0
0 to 0.025
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.1
0 to 0.6
Sulfur (S), % 0
0 to 0.0050
Titanium (Ti), % 0
0 to 0.030
Vanadium (V), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0