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SAE-AISI T15 Steel vs. S38100 Stainless Steel

Both SAE-AISI T15 steel and S38100 stainless steel are iron alloys. They have 66% 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 SAE-AISI T15 steel and the bottom bar is S38100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 830 to 2240
580

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Melting Completion (Liquidus), °C 1690
1400
Melting Onset (Solidus), °C 1640
1350
Specific Heat Capacity, J/kg-K 430
480
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 43
20
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 16
3.8
Embodied Energy, MJ/kg 250
54
Embodied Water, L/kg 140
160

Common Calculations

PREN (Pitting Resistance) 27
18
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 26 to 71
21
Strength to Weight: Bending, points 22 to 43
20
Thermal Diffusivity, mm2/s 5.6
4.0
Thermal Shock Resistance, points 26 to 70
13

Alloy Composition

Carbon (C), % 1.5 to 1.6
0 to 0.080
Chromium (Cr), % 3.8 to 5.0
17 to 19
Cobalt (Co), % 4.8 to 5.3
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 67.5 to 73.5
57.9 to 64
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 0.3
17.5 to 18.5
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.15 to 0.4
1.5 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 11.8 to 13
0
Vanadium (V), % 4.5 to 5.3
0