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2011A Aluminum vs. S35140 Stainless Steel

2011A aluminum belongs to the aluminum alloys classification, while S35140 stainless steel belongs to the iron 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 2011A aluminum and the bottom bar is S35140 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 6.8 to 16
34
Fatigue Strength, MPa 75 to 100
250
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
78
Shear Strength, MPa 190 to 250
460
Tensile Strength: Ultimate (UTS), MPa 310 to 410
690
Tensile Strength: Yield (Proof), MPa 140 to 310
310

Thermal Properties

Latent Heat of Fusion, J/g 390
300
Maximum Temperature: Mechanical, °C 190
1100
Melting Completion (Liquidus), °C 660
1420
Melting Onset (Solidus), °C 550
1370
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 130
14
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 96
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
31
Density, g/cm3 3.1
8.0
Embodied Carbon, kg CO2/kg material 7.9
5.5
Embodied Energy, MJ/kg 150
78
Embodied Water, L/kg 1150
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 40
190
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 670
250
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 44
24
Strength to Weight: Axial, points 28 to 37
24
Strength to Weight: Bending, points 33 to 40
22
Thermal Diffusivity, mm2/s 49
3.7
Thermal Shock Resistance, points 14 to 18
16

Alloy Composition

Aluminum (Al), % 91.5 to 95.1
0
Bismuth (Bi), % 0.2 to 0.6
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
20 to 22
Copper (Cu), % 4.5 to 6.0
0
Iron (Fe), % 0 to 0.5
44.1 to 52.7
Lead (Pb), % 0.2 to 0.6
0
Manganese (Mn), % 0
1.0 to 3.0
Molybdenum (Mo), % 0
1.0 to 2.0
Nickel (Ni), % 0
25 to 27
Niobium (Nb), % 0
0.25 to 0.75
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.4
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.15
0