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SAE-AISI T8 Steel vs. S32003 Stainless Steel

Both SAE-AISI T8 steel and S32003 stainless steel are iron alloys. They have 78% 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 T8 steel and the bottom bar is S32003 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 78
79
Tensile Strength: Ultimate (UTS), MPa 780 to 2140
730

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Melting Completion (Liquidus), °C 1730
1440
Melting Onset (Solidus), °C 1670
1400
Specific Heat Capacity, J/kg-K 420
480
Thermal Conductivity, W/m-K 18
15
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 45
14
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 10
3.0
Embodied Energy, MJ/kg 160
42
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 30
29
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 24 to 66
26
Strength to Weight: Bending, points 21 to 41
23
Thermal Diffusivity, mm2/s 4.8
4.0
Thermal Shock Resistance, points 24 to 66
21

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.030
Chromium (Cr), % 3.8 to 4.5
19.5 to 22.5
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 69.3 to 75.4
68.2 to 75.9
Manganese (Mn), % 0.2 to 0.4
0 to 2.0
Molybdenum (Mo), % 0.4 to 1.0
1.5 to 2.0
Nickel (Ni), % 0 to 0.3
3.0 to 4.0
Nitrogen (N), % 0
0.14 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 13.3 to 14.8
0
Vanadium (V), % 1.8 to 2.4
0