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EN-MC21120 Magnesium vs. EN 1.8867 Steel

EN-MC21120 magnesium belongs to the magnesium alloys classification, while EN 1.8867 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-MC21120 magnesium and the bottom bar is EN 1.8867 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63 to 75
160
Elastic (Young's, Tensile) Modulus, GPa 46
190
Elongation at Break, % 2.2 to 6.7
25
Fatigue Strength, MPa 84 to 96
260
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Shear Strength, MPa 110 to 160
350
Tensile Strength: Ultimate (UTS), MPa 200 to 270
540
Tensile Strength: Yield (Proof), MPa 130 to 170
360

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Maximum Temperature: Mechanical, °C 130
410
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 490
1420
Specific Heat Capacity, J/kg-K 990
470
Thermal Conductivity, W/m-K 76
48
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 59
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.4
Density, g/cm3 1.7
7.9
Embodied Carbon, kg CO2/kg material 22
1.6
Embodied Energy, MJ/kg 160
21
Embodied Water, L/kg 990
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.0 to 15
120
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 320
340
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 31 to 43
19
Strength to Weight: Bending, points 43 to 53
19
Thermal Diffusivity, mm2/s 44
13
Thermal Shock Resistance, points 11 to 16
16

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Boron (B), % 0
0 to 0.0050
Carbon (C), % 0
0 to 0.16
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 0 to 0.030
0 to 0.3
Iron (Fe), % 0 to 0.0050
96.3 to 100
Magnesium (Mg), % 88.6 to 91.3
0
Manganese (Mn), % 0.1 to 0.5
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.25
Nickel (Ni), % 0 to 0.0020
0 to 0.5
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.2
0 to 0.4
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
0 to 0.030
Vanadium (V), % 0
0 to 0.060
Zinc (Zn), % 0.35 to 1.0
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0 to 0.010
0