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S20910 Stainless Steel vs. 355.0 Aluminum

S20910 stainless steel belongs to the iron alloys classification, while 355.0 aluminum belongs to the aluminum alloys. There are 29 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 355.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 290
72 to 83
Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 14 to 39
1.5 to 2.6
Fatigue Strength, MPa 310 to 460
55 to 70
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
27
Shear Strength, MPa 500 to 570
150 to 240
Tensile Strength: Ultimate (UTS), MPa 780 to 940
200 to 260
Tensile Strength: Yield (Proof), MPa 430 to 810
150 to 190

Thermal Properties

Latent Heat of Fusion, J/g 300
470
Maximum Temperature: Mechanical, °C 1080
180
Melting Completion (Liquidus), °C 1420
620
Melting Onset (Solidus), °C 1380
560
Specific Heat Capacity, J/kg-K 480
890
Thermal Conductivity, W/m-K 13
150 to 170
Thermal Expansion, µm/m-K 16
22

Otherwise Unclassified Properties

Base Metal Price, % relative 22
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 4.8
8.0
Embodied Energy, MJ/kg 68
150
Embodied Water, L/kg 180
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
2.7 to 5.9
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
150 to 250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 28 to 33
20 to 27
Strength to Weight: Bending, points 24 to 27
28 to 33
Thermal Diffusivity, mm2/s 3.6
60 to 69
Thermal Shock Resistance, points 17 to 21
9.1 to 12

Alloy Composition

Aluminum (Al), % 0
90.3 to 94.1
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0 to 0.25
Copper (Cu), % 0
1.0 to 1.5
Iron (Fe), % 52.1 to 62.1
0 to 0.6
Magnesium (Mg), % 0
0.4 to 0.6
Manganese (Mn), % 4.0 to 6.0
0 to 0.5
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
4.5 to 5.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.25
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15