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SAE-AISI T6 Steel vs. S20161 Stainless Steel

Both SAE-AISI T6 steel and S20161 stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T6 steel and the bottom bar is S20161 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
76
Tensile Strength: Ultimate (UTS), MPa 880 to 2150
980

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Melting Completion (Liquidus), °C 1830
1380
Melting Onset (Solidus), °C 1770
1330
Specific Heat Capacity, J/kg-K 400
490
Thermal Conductivity, W/m-K 18
15
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 70
12
Density, g/cm3 9.5
7.5
Embodied Carbon, kg CO2/kg material 11
2.7
Embodied Energy, MJ/kg 170
39
Embodied Water, L/kg 160
130

Common Calculations

PREN (Pitting Resistance) 39
19
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
26
Strength to Weight: Axial, points 26 to 63
36
Strength to Weight: Bending, points 21 to 39
29
Thermal Diffusivity, mm2/s 4.7
4.0
Thermal Shock Resistance, points 26 to 64
22

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.15
Chromium (Cr), % 4.0 to 4.8
15 to 18
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 55.9 to 63.5
65.6 to 73.9
Manganese (Mn), % 0.2 to 0.4
4.0 to 6.0
Molybdenum (Mo), % 0.4 to 1.0
0
Nickel (Ni), % 0 to 0.3
4.0 to 6.0
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.4
3.0 to 4.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 18.5 to 21
0
Vanadium (V), % 1.5 to 2.1
0