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SAE-AISI T15 Steel vs. S31266 Stainless Steel

Both SAE-AISI T15 steel and S31266 stainless steel are iron alloys. They have 48% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T15 steel and the bottom bar is S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 76
81
Tensile Strength: Ultimate (UTS), MPa 830 to 2240
860

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Melting Completion (Liquidus), °C 1690
1470
Melting Onset (Solidus), °C 1640
1420
Specific Heat Capacity, J/kg-K 430
460
Thermal Conductivity, W/m-K 21
12
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 43
37
Density, g/cm3 8.7
8.2
Embodied Carbon, kg CO2/kg material 16
6.5
Embodied Energy, MJ/kg 250
89
Embodied Water, L/kg 140
220

Common Calculations

PREN (Pitting Resistance) 27
54
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 26 to 71
29
Strength to Weight: Bending, points 22 to 43
24
Thermal Diffusivity, mm2/s 5.6
3.1
Thermal Shock Resistance, points 26 to 70
18

Alloy Composition

Carbon (C), % 1.5 to 1.6
0 to 0.030
Chromium (Cr), % 3.8 to 5.0
23 to 25
Cobalt (Co), % 4.8 to 5.3
0
Copper (Cu), % 0 to 0.25
1.0 to 2.5
Iron (Fe), % 67.5 to 73.5
34.1 to 46
Manganese (Mn), % 0.15 to 0.4
2.0 to 4.0
Molybdenum (Mo), % 0 to 1.0
5.2 to 6.2
Nickel (Ni), % 0 to 0.3
21 to 24
Nitrogen (N), % 0
0.35 to 0.6
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.15 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 11.8 to 13
1.5 to 2.5
Vanadium (V), % 4.5 to 5.3
0