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S66286 Stainless Steel vs. 6151 Aluminum

S66286 stainless steel belongs to the iron alloys classification, while 6151 aluminum belongs to the aluminum 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 S66286 stainless steel and the bottom bar is 6151 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
69
Elongation at Break, % 17 to 40
1.1 to 5.7
Fatigue Strength, MPa 240 to 410
80 to 100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 75
26
Shear Strength, MPa 420 to 630
190 to 200
Tensile Strength: Ultimate (UTS), MPa 620 to 1020
330 to 340
Tensile Strength: Yield (Proof), MPa 280 to 670
270 to 280

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Maximum Temperature: Mechanical, °C 920
170
Melting Completion (Liquidus), °C 1430
650
Melting Onset (Solidus), °C 1370
590
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 15
170
Thermal Expansion, µm/m-K 17
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
45
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
150

Otherwise Unclassified Properties

Base Metal Price, % relative 26
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 6.0
8.2
Embodied Energy, MJ/kg 87
150
Embodied Water, L/kg 170
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 200
3.5 to 18
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 1150
520 to 580
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 22 to 36
34
Strength to Weight: Bending, points 20 to 28
39
Thermal Diffusivity, mm2/s 4.0
70
Thermal Shock Resistance, points 13 to 22
15

Alloy Composition

Aluminum (Al), % 0 to 0.35
95.6 to 98.8
Boron (B), % 0.0010 to 0.010
0
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 13.5 to 16
0.15 to 0.35
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 49.1 to 59.5
0 to 1.0
Magnesium (Mg), % 0
0.45 to 0.8
Manganese (Mn), % 0 to 2.0
0 to 0.2
Molybdenum (Mo), % 1.0 to 1.5
0
Nickel (Ni), % 24 to 27
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0.6 to 1.2
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 1.9 to 2.4
0 to 0.15
Vanadium (V), % 0.1 to 0.5
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15