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EN-MC21210 Magnesium vs. Grade FDSiCr Steel

EN-MC21210 magnesium belongs to the magnesium alloys classification, while grade FDSiCr 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-MC21210 magnesium and the bottom bar is grade FDSiCr steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 48
580
Elastic (Young's, Tensile) Modulus, GPa 44
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
80
Tensile Strength: Ultimate (UTS), MPa 190
1930

Thermal Properties

Latent Heat of Fusion, J/g 350
270
Maximum Temperature: Mechanical, °C 100
410
Melting Completion (Liquidus), °C 600
1440
Melting Onset (Solidus), °C 570
1400
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 120
48
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.2
Density, g/cm3 1.6
7.7
Embodied Carbon, kg CO2/kg material 24
1.5
Embodied Energy, MJ/kg 160
20
Embodied Water, L/kg 980
48

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 32
69
Strength to Weight: Bending, points 44
44
Thermal Diffusivity, mm2/s 76
13
Thermal Shock Resistance, points 11
58

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0
Carbon (C), % 0
0.5 to 0.6
Chromium (Cr), % 0
0.5 to 0.8
Copper (Cu), % 0 to 0.010
0 to 0.12
Iron (Fe), % 0 to 0.0050
96.5 to 97.8
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
0.5 to 0.9
Nickel (Ni), % 0 to 0.0020
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.1
1.2 to 1.6
Sulfur (S), % 0
0 to 0.025
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0