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SAE-AISI O2 Steel vs. EN AC-46600 Aluminum

SAE-AISI O2 steel belongs to the iron alloys classification, while EN AC-46600 aluminum belongs to the aluminum alloys. There are 23 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 SAE-AISI O2 steel and the bottom bar is EN AC-46600 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
72
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
27
Tensile Strength: Ultimate (UTS), MPa 640 to 2050
180

Thermal Properties

Latent Heat of Fusion, J/g 250
490
Melting Completion (Liquidus), °C 1450
620
Melting Onset (Solidus), °C 1410
560
Specific Heat Capacity, J/kg-K 470
890
Thermal Conductivity, W/m-K 43
130
Thermal Expansion, µm/m-K 11
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
29
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
94

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
10
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 1.8
7.8
Embodied Energy, MJ/kg 26
150
Embodied Water, L/kg 50
1080

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 23 to 73
18
Strength to Weight: Bending, points 21 to 46
25
Thermal Diffusivity, mm2/s 12
51
Thermal Shock Resistance, points 22 to 70
8.1

Alloy Composition

Aluminum (Al), % 0
85.6 to 92.4
Carbon (C), % 0.85 to 1.0
0
Chromium (Cr), % 0 to 0.5
0
Copper (Cu), % 0 to 0.25
1.5 to 2.5
Iron (Fe), % 95 to 97.8
0 to 0.8
Lead (Pb), % 0
0 to 0.25
Magnesium (Mg), % 0
0 to 0.35
Manganese (Mn), % 1.4 to 1.8
0.15 to 0.65
Molybdenum (Mo), % 0 to 0.3
0
Nickel (Ni), % 0 to 0.3
0 to 0.35
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
6.0 to 8.0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.15
Titanium (Ti), % 0
0 to 0.25
Vanadium (V), % 0 to 0.3
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.15