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S20910 Stainless Steel vs. 6110A Aluminum

S20910 stainless steel belongs to the iron alloys classification, while 6110A aluminum belongs to the aluminum alloys. There are 28 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 S20910 stainless steel and the bottom bar is 6110A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 14 to 39
11 to 18
Fatigue Strength, MPa 310 to 460
140 to 210
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
26
Shear Strength, MPa 500 to 570
220 to 280
Tensile Strength: Ultimate (UTS), MPa 780 to 940
360 to 470
Tensile Strength: Yield (Proof), MPa 430 to 810
250 to 430

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Maximum Temperature: Mechanical, °C 1080
190
Melting Completion (Liquidus), °C 1420
650
Melting Onset (Solidus), °C 1380
600
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 13
160
Thermal Expansion, µm/m-K 16
23

Otherwise Unclassified Properties

Base Metal Price, % relative 22
9.5
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 4.8
8.4
Embodied Energy, MJ/kg 68
150
Embodied Water, L/kg 180
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
47 to 58
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
450 to 1300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 28 to 33
36 to 47
Strength to Weight: Bending, points 24 to 27
41 to 48
Thermal Diffusivity, mm2/s 3.6
65
Thermal Shock Resistance, points 17 to 21
16 to 21

Alloy Composition

Aluminum (Al), % 0
94.8 to 98
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0.050 to 0.25
Copper (Cu), % 0
0.3 to 0.8
Iron (Fe), % 52.1 to 62.1
0 to 0.5
Magnesium (Mg), % 0
0.7 to 1.1
Manganese (Mn), % 4.0 to 6.0
0.3 to 0.9
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.75
0.7 to 1.1
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0 to 0.2
Residuals, % 0
0 to 0.15