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S20910 Stainless Steel vs. 308.0 Aluminum

S20910 stainless steel belongs to the iron alloys classification, while 308.0 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 308.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 290
70
Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 14 to 39
2.0
Fatigue Strength, MPa 310 to 460
89
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
27
Shear Strength, MPa 500 to 570
150
Tensile Strength: Ultimate (UTS), MPa 780 to 940
190
Tensile Strength: Yield (Proof), MPa 430 to 810
110

Thermal Properties

Latent Heat of Fusion, J/g 300
470
Maximum Temperature: Mechanical, °C 1080
170
Melting Completion (Liquidus), °C 1420
620
Melting Onset (Solidus), °C 1380
540
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 13
140
Thermal Expansion, µm/m-K 16
20

Otherwise Unclassified Properties

Base Metal Price, % relative 22
10
Density, g/cm3 7.8
2.9
Embodied Carbon, kg CO2/kg material 4.8
7.7
Embodied Energy, MJ/kg 68
140
Embodied Water, L/kg 180
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
3.3
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
83
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
47
Strength to Weight: Axial, points 28 to 33
18
Strength to Weight: Bending, points 24 to 27
25
Thermal Diffusivity, mm2/s 3.6
55
Thermal Shock Resistance, points 17 to 21
9.2

Alloy Composition

Aluminum (Al), % 0
85.7 to 91
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 52.1 to 62.1
0 to 1.0
Magnesium (Mg), % 0
0 to 0.1
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
5.0 to 6.0
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 1.0
Residuals, % 0
0 to 0.5