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ACI-ASTM CC50 Steel vs. EN-MC21210 Magnesium

ACI-ASTM CC50 steel belongs to the iron alloys classification, while EN-MC21210 magnesium belongs to the magnesium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, 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 ACI-ASTM CC50 steel and the bottom bar is EN-MC21210 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
48
Elastic (Young's, Tensile) Modulus, GPa 200
44
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
17
Tensile Strength: Ultimate (UTS), MPa 430
190

Thermal Properties

Latent Heat of Fusion, J/g 300
350
Maximum Temperature: Mechanical, °C 1100
100
Melting Completion (Liquidus), °C 1420
600
Melting Onset (Solidus), °C 1370
570
Specific Heat Capacity, J/kg-K 490
1000
Thermal Conductivity, W/m-K 17
120
Thermal Expansion, µm/m-K 11
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
24
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
130

Otherwise Unclassified Properties

Base Metal Price, % relative 14
12
Density, g/cm3 7.6
1.6
Embodied Carbon, kg CO2/kg material 2.7
24
Embodied Energy, MJ/kg 39
160
Embodied Water, L/kg 170
980

Common Calculations

Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 26
72
Strength to Weight: Axial, points 16
32
Strength to Weight: Bending, points 17
44
Thermal Diffusivity, mm2/s 4.5
76
Thermal Shock Resistance, points 14
11

Alloy Composition

Aluminum (Al), % 0
1.6 to 2.6
Carbon (C), % 0 to 0.5
0
Chromium (Cr), % 26 to 30
0
Copper (Cu), % 0
0 to 0.010
Iron (Fe), % 62.9 to 74
0 to 0.0050
Magnesium (Mg), % 0
96.3 to 98.3
Manganese (Mn), % 0 to 1.0
0.1 to 0.7
Nickel (Ni), % 0 to 4.0
0 to 0.0020
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0 to 0.1
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.010