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ACI-ASTM CC50 Steel vs. WE54A Magnesium

ACI-ASTM CC50 steel belongs to the iron alloys classification, while WE54A magnesium belongs to the magnesium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (9, 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 WE54A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
85
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
270 to 300

Thermal Properties

Latent Heat of Fusion, J/g 300
330
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1420
640
Melting Onset (Solidus), °C 1370
570
Specific Heat Capacity, J/kg-K 490
960
Thermal Conductivity, W/m-K 17
52
Thermal Expansion, µm/m-K 11
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
10
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
47

Otherwise Unclassified Properties

Base Metal Price, % relative 14
34
Density, g/cm3 7.6
1.9
Embodied Carbon, kg CO2/kg material 2.7
29
Embodied Energy, MJ/kg 39
260
Embodied Water, L/kg 170
900

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
62
Strength to Weight: Axial, points 16
39 to 43
Strength to Weight: Bending, points 17
49 to 51
Thermal Diffusivity, mm2/s 4.5
28
Thermal Shock Resistance, points 14
18 to 19

Alloy Composition

Carbon (C), % 0 to 0.5
0
Chromium (Cr), % 26 to 30
0
Copper (Cu), % 0
0 to 0.030
Iron (Fe), % 62.9 to 74
0 to 0.010
Lithium (Li), % 0
0 to 0.2
Magnesium (Mg), % 0
88.7 to 93.4
Manganese (Mn), % 0 to 1.0
0 to 0.030
Nickel (Ni), % 0 to 4.0
0 to 0.0050
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0 to 0.010
Sulfur (S), % 0 to 0.040
0
Unspecified Rare Earths, % 0
1.5 to 4.0
Yttrium (Y), % 0
4.8 to 5.5
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3