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S32906 Stainless Steel vs. 6101 Aluminum

S32906 stainless steel belongs to the iron alloys classification, while 6101 aluminum belongs to the aluminum alloys. There are 21 material properties with values for both materials. Properties with values for just one material (13, 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 S32906 stainless steel and the bottom bar is 6101 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
68
Elongation at Break, % 28
10 to 25
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 81
26

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1100
160
Melting Completion (Liquidus), °C 1430
650
Melting Onset (Solidus), °C 1380
620
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 13
220 to 230
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
57 to 60
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
190 to 200

Otherwise Unclassified Properties

Base Metal Price, % relative 20
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 3.7
8.3
Embodied Energy, MJ/kg 52
150
Embodied Water, L/kg 190
1190

Common Calculations

Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
50
Thermal Diffusivity, mm2/s 3.6
89 to 93

Alloy Composition

Aluminum (Al), % 0
97.6 to 99.4
Boron (B), % 0
0 to 0.060
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 28 to 30
0 to 0.030
Copper (Cu), % 0 to 0.8
0 to 0.1
Iron (Fe), % 56.6 to 63.6
0 to 0.5
Magnesium (Mg), % 0
0.35 to 0.8
Manganese (Mn), % 0.8 to 1.5
0 to 0.030
Molybdenum (Mo), % 1.5 to 2.6
0
Nickel (Ni), % 5.8 to 7.5
0
Nitrogen (N), % 0.3 to 0.4
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0.3 to 0.7
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.1