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SAE-AISI T15 Steel vs. S44401 Stainless Steel

Both SAE-AISI T15 steel and S44401 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T15 steel and the bottom bar is S44401 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
78
Tensile Strength: Ultimate (UTS), MPa 830 to 2240
480

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Melting Completion (Liquidus), °C 1690
1460
Melting Onset (Solidus), °C 1640
1420
Specific Heat Capacity, J/kg-K 430
470
Thermal Conductivity, W/m-K 21
22
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 43
12
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 16
2.9
Embodied Energy, MJ/kg 250
40
Embodied Water, L/kg 140
130

Common Calculations

PREN (Pitting Resistance) 27
26
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 26 to 71
17
Strength to Weight: Bending, points 22 to 43
18
Thermal Diffusivity, mm2/s 5.6
5.9
Thermal Shock Resistance, points 26 to 70
17

Alloy Composition

Carbon (C), % 1.5 to 1.6
0 to 0.025
Chromium (Cr), % 3.8 to 5.0
17.5 to 19.5
Cobalt (Co), % 4.8 to 5.3
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 67.5 to 73.5
75.1 to 80.6
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 0 to 1.0
1.8 to 2.5
Nickel (Ni), % 0 to 0.3
0 to 1.0
Nitrogen (N), % 0
0 to 0.035
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 0.4
0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0.2 to 0.8
Tungsten (W), % 11.8 to 13
0
Vanadium (V), % 4.5 to 5.3
0