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S20910 Stainless Steel vs. A206.0 Aluminum

S20910 stainless steel belongs to the iron alloys classification, while A206.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 A206.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 290
100 to 110
Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 14 to 39
4.2 to 10
Fatigue Strength, MPa 310 to 460
90 to 180
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
26
Shear Strength, MPa 500 to 570
260
Tensile Strength: Ultimate (UTS), MPa 780 to 940
390 to 440
Tensile Strength: Yield (Proof), MPa 430 to 810
250 to 380

Thermal Properties

Latent Heat of Fusion, J/g 300
390
Maximum Temperature: Mechanical, °C 1080
170
Melting Completion (Liquidus), °C 1420
670
Melting Onset (Solidus), °C 1380
550
Specific Heat Capacity, J/kg-K 480
880
Thermal Conductivity, W/m-K 13
130
Thermal Expansion, µm/m-K 16
23

Otherwise Unclassified Properties

Base Metal Price, % relative 22
11
Density, g/cm3 7.8
3.0
Embodied Carbon, kg CO2/kg material 4.8
8.0
Embodied Energy, MJ/kg 68
150
Embodied Water, L/kg 180
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
16 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
440 to 1000
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
46
Strength to Weight: Axial, points 28 to 33
36 to 41
Strength to Weight: Bending, points 24 to 27
39 to 43
Thermal Diffusivity, mm2/s 3.6
48
Thermal Shock Resistance, points 17 to 21
17 to 19

Alloy Composition

Aluminum (Al), % 0
93.9 to 95.7
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0
Copper (Cu), % 0
4.2 to 5.0
Iron (Fe), % 52.1 to 62.1
0 to 0.1
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 4.0 to 6.0
0 to 0.2
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0 to 0.050
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 to 0.050
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0.15 to 0.3
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15