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ACI-ASTM CC50 Steel vs. EZ33A Magnesium

ACI-ASTM CC50 steel belongs to the iron alloys classification, while EZ33A magnesium belongs to the magnesium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (10, 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 EZ33A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
55
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
150

Thermal Properties

Latent Heat of Fusion, J/g 300
330
Maximum Temperature: Mechanical, °C 1100
250
Melting Completion (Liquidus), °C 1420
640
Melting Onset (Solidus), °C 1370
570
Specific Heat Capacity, J/kg-K 490
970
Thermal Conductivity, W/m-K 17
100
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
110

Otherwise Unclassified Properties

Base Metal Price, % relative 14
25
Density, g/cm3 7.6
1.9
Embodied Carbon, kg CO2/kg material 2.7
25
Embodied Energy, MJ/kg 39
190
Embodied Water, L/kg 170
930

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
61
Strength to Weight: Axial, points 16
22
Strength to Weight: Bending, points 17
33
Thermal Diffusivity, mm2/s 4.5
54
Thermal Shock Resistance, points 14
9.2

Alloy Composition

Carbon (C), % 0 to 0.5
0
Chromium (Cr), % 26 to 30
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 62.9 to 74
0
Magnesium (Mg), % 0
91.5 to 95
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 0 to 4.0
0 to 0.010
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0
Sulfur (S), % 0 to 0.040
0
Unspecified Rare Earths, % 0
2.5 to 4.0
Zinc (Zn), % 0
2.0 to 3.1
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3