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S31277 Stainless Steel vs. 2011 Aluminum

S31277 stainless steel belongs to the iron alloys classification, while 2011 aluminum belongs to the aluminum alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, 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 S31277 stainless steel and the bottom bar is 2011 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
71
Elongation at Break, % 45
8.5 to 18
Fatigue Strength, MPa 380
74 to 120
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
27
Shear Strength, MPa 600
190 to 250
Tensile Strength: Ultimate (UTS), MPa 860
310 to 420
Tensile Strength: Yield (Proof), MPa 410
140 to 310

Thermal Properties

Latent Heat of Fusion, J/g 310
390
Maximum Temperature: Mechanical, °C 1100
190
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
540
Specific Heat Capacity, J/kg-K 460
870
Thermal Expansion, µm/m-K 16
23

Otherwise Unclassified Properties

Base Metal Price, % relative 36
11
Density, g/cm3 8.1
3.1
Embodied Carbon, kg CO2/kg material 6.7
7.9
Embodied Energy, MJ/kg 90
150
Embodied Water, L/kg 220
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
29 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 410
140 to 680
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
44
Strength to Weight: Axial, points 29
27 to 37
Strength to Weight: Bending, points 25
32 to 40
Thermal Shock Resistance, points 19
14 to 19

Alloy Composition


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Aluminum (Al), % 0
91.3 to 94.6
Bismuth (Bi), % 0
0.2 to 0.6
Carbon (C), % 0 to 0.020
0
Chromium (Cr), % 20.5 to 23
0
Copper (Cu), % 0.5 to 1.5
5.0 to 6.0
Iron (Fe), % 35.5 to 46.2
0 to 0.7
Lead (Pb), % 0
0.2 to 0.6
Manganese (Mn), % 0 to 3.0
0
Molybdenum (Mo), % 6.5 to 8.0
0
Nickel (Ni), % 26 to 28
0
Nitrogen (N), % 0.3 to 0.4
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.010
0
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.15