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S31100 Stainless Steel vs. SAE-AISI T15 Steel

Both S31100 stainless steel and SAE-AISI T15 steel are iron alloys. They have 71% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is S31100 stainless steel and the bottom bar is SAE-AISI T15 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 1000
830 to 2240

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1420
1690
Melting Onset (Solidus), °C 1380
1640
Specific Heat Capacity, J/kg-K 480
430
Thermal Conductivity, W/m-K 16
21
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 16
43
Density, g/cm3 7.7
8.7
Embodied Carbon, kg CO2/kg material 3.1
16
Embodied Energy, MJ/kg 44
250
Embodied Water, L/kg 170
140

Common Calculations

PREN (Pitting Resistance) 26
27
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 36
26 to 71
Strength to Weight: Bending, points 29
22 to 43
Thermal Diffusivity, mm2/s 4.2
5.6
Thermal Shock Resistance, points 28
26 to 70

Alloy Composition

Carbon (C), % 0 to 0.060
1.5 to 1.6
Chromium (Cr), % 25 to 27
3.8 to 5.0
Cobalt (Co), % 0
4.8 to 5.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 63.6 to 69
67.5 to 73.5
Manganese (Mn), % 0 to 1.0
0.15 to 0.4
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 6.0 to 7.0
0 to 0.3
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Tungsten (W), % 0
11.8 to 13
Vanadium (V), % 0
4.5 to 5.3