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6105 Aluminum vs. S66286 Stainless Steel

6105 aluminum belongs to the aluminum alloys classification, while S66286 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 6105 aluminum and the bottom bar is S66286 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 9.0 to 16
17 to 40
Fatigue Strength, MPa 95 to 130
240 to 410
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
75
Shear Strength, MPa 120 to 170
420 to 630
Tensile Strength: Ultimate (UTS), MPa 190 to 280
620 to 1020
Tensile Strength: Yield (Proof), MPa 120 to 270
280 to 670

Thermal Properties

Latent Heat of Fusion, J/g 410
300
Maximum Temperature: Mechanical, °C 160
920
Melting Completion (Liquidus), °C 650
1430
Melting Onset (Solidus), °C 600
1370
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 180 to 190
15
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46 to 50
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 150 to 170
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
26
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.3
6.0
Embodied Energy, MJ/kg 150
87
Embodied Water, L/kg 1180
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25 to 27
150 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 550
190 to 1150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 20 to 29
22 to 36
Strength to Weight: Bending, points 28 to 35
20 to 28
Thermal Diffusivity, mm2/s 72 to 79
4.0
Thermal Shock Resistance, points 8.6 to 12
13 to 22

Alloy Composition

Aluminum (Al), % 97.2 to 99
0 to 0.35
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.1
13.5 to 16
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.35
49.1 to 59.5
Magnesium (Mg), % 0.45 to 0.8
0
Manganese (Mn), % 0 to 0.1
0 to 2.0
Molybdenum (Mo), % 0
1.0 to 1.5
Nickel (Ni), % 0
24 to 27
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.6 to 1.0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
1.9 to 2.4
Vanadium (V), % 0
0.1 to 0.5
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0