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SAE-AISI T2 Steel vs. S38815 Stainless Steel

Both SAE-AISI T2 steel and S38815 stainless steel are iron alloys. They have 67% of their average alloy composition in common. There are 20 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 T2 steel and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 79
74
Tensile Strength: Ultimate (UTS), MPa 780 to 2150
610

Thermal Properties

Latent Heat of Fusion, J/g 250
370
Melting Completion (Liquidus), °C 1820
1360
Melting Onset (Solidus), °C 1760
1310
Specific Heat Capacity, J/kg-K 410
500
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 46
19
Density, g/cm3 9.3
7.5
Embodied Carbon, kg CO2/kg material 11
3.8
Embodied Energy, MJ/kg 170
54
Embodied Water, L/kg 98
140

Common Calculations

PREN (Pitting Resistance) 36
18
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 23 to 64
22
Strength to Weight: Bending, points 20 to 40
21
Thermal Shock Resistance, points 23 to 65
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 0.8 to 0.9
0 to 0.030
Chromium (Cr), % 3.8 to 4.5
13 to 15
Copper (Cu), % 0 to 0.25
0.75 to 1.5
Iron (Fe), % 70.8 to 75.8
56.1 to 67
Manganese (Mn), % 0.2 to 0.4
0 to 2.0
Molybdenum (Mo), % 0 to 1.0
0.75 to 1.5
Nickel (Ni), % 0 to 0.3
13 to 17
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.4
5.5 to 6.5
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 17.5 to 19
0
Vanadium (V), % 1.8 to 2.4
0