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SAE-AISI S6 Steel vs. 1080A Aluminum

SAE-AISI S6 steel belongs to the iron alloys classification, while 1080A 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 S6 steel and the bottom bar is 1080A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
68
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
26
Tensile Strength: Ultimate (UTS), MPa 670 to 1920
74 to 140

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Melting Completion (Liquidus), °C 1430
640
Melting Onset (Solidus), °C 1390
640
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 41
230
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
62
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
200

Otherwise Unclassified Properties

Base Metal Price, % relative 3.2
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 2.3
8.3
Embodied Energy, MJ/kg 33
160
Embodied Water, L/kg 56
1200

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 24 to 70
7.6 to 15
Strength to Weight: Bending, points 22 to 45
14 to 22
Thermal Diffusivity, mm2/s 11
94
Thermal Shock Resistance, points 22 to 64
3.3 to 6.4

Alloy Composition

Aluminum (Al), % 0
99.8 to 100
Carbon (C), % 0.4 to 0.5
0
Chromium (Cr), % 1.2 to 1.5
0
Copper (Cu), % 0 to 0.25
0 to 0.030
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 92.8 to 94.7
0 to 0.15
Magnesium (Mg), % 0
0 to 0.020
Manganese (Mn), % 1.2 to 1.5
0 to 0.020
Molybdenum (Mo), % 0.3 to 0.5
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 2.0 to 2.5
0 to 0.15
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.020
Vanadium (V), % 0.2 to 0.4
0
Zinc (Zn), % 0
0 to 0.060

Comparable Variants