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SAE-AISI O2 Steel vs. 520.0 Aluminum

SAE-AISI O2 steel belongs to the iron alloys classification, while 520.0 aluminum belongs to the aluminum alloys. There are 23 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 SAE-AISI O2 steel and the bottom bar is 520.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
66
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
25
Tensile Strength: Ultimate (UTS), MPa 640 to 2050
330

Thermal Properties

Latent Heat of Fusion, J/g 250
390
Melting Completion (Liquidus), °C 1450
600
Melting Onset (Solidus), °C 1410
480
Specific Heat Capacity, J/kg-K 470
910
Thermal Conductivity, W/m-K 43
87
Thermal Expansion, µm/m-K 11
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
21
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
72

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
9.5
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 1.8
9.8
Embodied Energy, MJ/kg 26
160
Embodied Water, L/kg 50
1170

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
52
Strength to Weight: Axial, points 23 to 73
35
Strength to Weight: Bending, points 21 to 46
41
Thermal Diffusivity, mm2/s 12
37
Thermal Shock Resistance, points 22 to 70
14

Alloy Composition

Aluminum (Al), % 0
87.9 to 90.5
Carbon (C), % 0.85 to 1.0
0
Chromium (Cr), % 0 to 0.5
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 95 to 97.8
0 to 0.3
Magnesium (Mg), % 0
9.5 to 10.6
Manganese (Mn), % 1.4 to 1.8
0 to 0.15
Molybdenum (Mo), % 0 to 0.3
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0 to 0.25
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.25
Vanadium (V), % 0 to 0.3
0
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15