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SAE-AISI T1 Steel vs. S31254 Stainless Steel

Both SAE-AISI T1 steel and S31254 stainless steel are iron alloys. They have 59% 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 T1 steel and the bottom bar is S31254 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 80
80
Tensile Strength: Ultimate (UTS), MPa 770 to 2130
720

Thermal Properties

Latent Heat of Fusion, J/g 240
300
Melting Completion (Liquidus), °C 1810
1460
Melting Onset (Solidus), °C 1750
1420
Specific Heat Capacity, J/kg-K 410
460
Thermal Conductivity, W/m-K 20
14
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 45
28
Density, g/cm3 9.3
8.0
Embodied Carbon, kg CO2/kg material 8.2
5.5
Embodied Energy, MJ/kg 130
74
Embodied Water, L/kg 90
190

Common Calculations

PREN (Pitting Resistance) 34
44
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 23 to 64
25
Strength to Weight: Bending, points 20 to 40
22
Thermal Diffusivity, mm2/s 5.2
3.8
Thermal Shock Resistance, points 23 to 64
15

Alloy Composition

Carbon (C), % 0.65 to 0.8
0 to 0.020
Chromium (Cr), % 3.8 to 4.5
19.5 to 20.5
Copper (Cu), % 0 to 0.25
0.5 to 1.0
Iron (Fe), % 73.2 to 77.2
51.4 to 56.3
Manganese (Mn), % 0.1 to 0.4
0 to 1.0
Molybdenum (Mo), % 0
6.0 to 6.5
Nickel (Ni), % 0 to 0.3
17.5 to 18.5
Nitrogen (N), % 0
0.18 to 0.22
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.4
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 17.3 to 18.8
0
Vanadium (V), % 0.9 to 1.3
0