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S35135 Stainless Steel vs. 2117 Aluminum

S35135 stainless steel belongs to the iron alloys classification, while 2117 aluminum belongs to the aluminum alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 S35135 stainless steel and the bottom bar is 2117 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 34
26
Fatigue Strength, MPa 180
95
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
27
Shear Strength, MPa 390
200
Tensile Strength: Ultimate (UTS), MPa 590
300
Tensile Strength: Yield (Proof), MPa 230
170

Thermal Properties

Latent Heat of Fusion, J/g 320
400
Maximum Temperature: Mechanical, °C 1100
220
Melting Completion (Liquidus), °C 1430
650
Melting Onset (Solidus), °C 1380
550
Specific Heat Capacity, J/kg-K 470
880
Thermal Expansion, µm/m-K 16
24

Otherwise Unclassified Properties

Base Metal Price, % relative 37
10
Density, g/cm3 8.1
3.0
Embodied Carbon, kg CO2/kg material 6.8
8.2
Embodied Energy, MJ/kg 94
150
Embodied Water, L/kg 220
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
64
Resilience: Unit (Modulus of Resilience), kJ/m3 130
190
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
47
Strength to Weight: Axial, points 20
28
Strength to Weight: Bending, points 19
33
Thermal Shock Resistance, points 13
12

Alloy Composition

Aluminum (Al), % 0
91 to 97.6
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 20 to 25
0 to 0.1
Copper (Cu), % 0 to 0.75
2.2 to 4.5
Iron (Fe), % 28.3 to 45
0 to 0.7
Magnesium (Mg), % 0
0.2 to 1.0
Manganese (Mn), % 0 to 1.0
0.4 to 1.0
Molybdenum (Mo), % 4.0 to 4.8
0
Nickel (Ni), % 30 to 38
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0.6 to 1.0
0.2 to 0.8
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0.4 to 1.0
0 to 0.25
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15