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SAE-AISI S6 Steel vs. EN AC-46500 Aluminum

SAE-AISI S6 steel belongs to the iron alloys classification, while EN AC-46500 aluminum belongs to the aluminum alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, 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 S6 steel and the bottom bar is EN AC-46500 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
74
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
28
Tensile Strength: Ultimate (UTS), MPa 670 to 1920
270

Thermal Properties

Latent Heat of Fusion, J/g 290
520
Melting Completion (Liquidus), °C 1430
610
Melting Onset (Solidus), °C 1390
520
Specific Heat Capacity, J/kg-K 480
880
Thermal Conductivity, W/m-K 41
100
Thermal Expansion, µm/m-K 12
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
26
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
81

Otherwise Unclassified Properties

Base Metal Price, % relative 3.2
10
Density, g/cm3 7.7
2.9
Embodied Carbon, kg CO2/kg material 2.3
7.6
Embodied Energy, MJ/kg 33
140
Embodied Water, L/kg 56
1030

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
49
Strength to Weight: Axial, points 24 to 70
26
Strength to Weight: Bending, points 22 to 45
32
Thermal Diffusivity, mm2/s 11
41
Thermal Shock Resistance, points 22 to 64
12

Alloy Composition

Aluminum (Al), % 0
77.9 to 90
Carbon (C), % 0.4 to 0.5
0
Chromium (Cr), % 1.2 to 1.5
0 to 0.15
Copper (Cu), % 0 to 0.25
2.0 to 4.0
Iron (Fe), % 92.8 to 94.7
0 to 1.3
Lead (Pb), % 0
0 to 0.35
Magnesium (Mg), % 0
0.050 to 0.55
Manganese (Mn), % 1.2 to 1.5
0 to 0.55
Molybdenum (Mo), % 0.3 to 0.5
0
Nickel (Ni), % 0
0 to 0.55
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 2.0 to 2.5
8.0 to 11
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.15
Titanium (Ti), % 0
0 to 0.25
Vanadium (V), % 0.2 to 0.4
0
Zinc (Zn), % 0
0 to 3.0
Residuals, % 0
0 to 0.25