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S32906 Stainless Steel vs. 6105 Aluminum

S32906 stainless steel belongs to the iron alloys classification, while 6105 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 6105 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
68
Elongation at Break, % 28
9.0 to 16
Fatigue Strength, MPa 460
95 to 130
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 81
26
Shear Strength, MPa 550
120 to 170
Tensile Strength: Ultimate (UTS), MPa 850
190 to 280
Tensile Strength: Yield (Proof), MPa 620
120 to 270

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Maximum Temperature: Mechanical, °C 1100
160
Melting Completion (Liquidus), °C 1430
650
Melting Onset (Solidus), °C 1380
600
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 13
180 to 190
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
46 to 50
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
150 to 170

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
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
25 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 950
100 to 550
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 30
20 to 29
Strength to Weight: Bending, points 26
28 to 35
Thermal Diffusivity, mm2/s 3.6
72 to 79
Thermal Shock Resistance, points 23
8.6 to 12

Alloy Composition

Aluminum (Al), % 0
97.2 to 99
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 28 to 30
0 to 0.1
Copper (Cu), % 0 to 0.8
0 to 0.1
Iron (Fe), % 56.6 to 63.6
0 to 0.35
Magnesium (Mg), % 0
0.45 to 0.8
Manganese (Mn), % 0.8 to 1.5
0 to 0.1
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
0.6 to 1.0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15