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SAE-AISI S2 Steel vs. EN AC-45300 Aluminum

SAE-AISI S2 steel belongs to the iron alloys classification, while EN AC-45300 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 S2 steel and the bottom bar is EN AC-45300 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
71
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
27
Tensile Strength: Ultimate (UTS), MPa 670 to 1940
220 to 290

Thermal Properties

Latent Heat of Fusion, J/g 260
470
Melting Completion (Liquidus), °C 1450
630
Melting Onset (Solidus), °C 1410
590
Specific Heat Capacity, J/kg-K 470
890
Thermal Conductivity, W/m-K 44
150
Thermal Expansion, µm/m-K 11
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
36
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
120

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 2.1
8.0
Embodied Energy, MJ/kg 30
150
Embodied Water, L/kg 49
1120

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 24 to 69
23 to 29
Strength to Weight: Bending, points 22 to 44
30 to 35
Thermal Diffusivity, mm2/s 12
60
Thermal Shock Resistance, points 23 to 68
10 to 13

Alloy Composition

Aluminum (Al), % 0
90.2 to 94.2
Carbon (C), % 0.4 to 0.55
0
Copper (Cu), % 0 to 0.25
1.0 to 1.5
Iron (Fe), % 96 to 98.1
0 to 0.65
Lead (Pb), % 0
0 to 0.15
Magnesium (Mg), % 0
0.35 to 0.65
Manganese (Mn), % 0.3 to 0.5
0 to 0.55
Molybdenum (Mo), % 0.3 to 0.6
0
Nickel (Ni), % 0 to 0.3
0 to 0.25
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.9 to 1.2
4.5 to 5.5
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0 to 0.25
Vanadium (V), % 0 to 0.5
0
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15