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SAE-AISI S2 Steel vs. S32050 Stainless Steel

Both SAE-AISI S2 steel and S32050 stainless steel are iron alloys. They have 49% of their average alloy composition in common. There are 23 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 S2 steel and the bottom bar is S32050 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
81
Tensile Strength: Ultimate (UTS), MPa 670 to 1940
770

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 44
12
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
31
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.1
6.0
Embodied Energy, MJ/kg 30
81
Embodied Water, L/kg 49
210

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 69
27
Strength to Weight: Bending, points 22 to 44
23
Thermal Diffusivity, mm2/s 12
3.3
Thermal Shock Resistance, points 23 to 68
17

Alloy Composition

Carbon (C), % 0.4 to 0.55
0 to 0.030
Chromium (Cr), % 0
22 to 24
Copper (Cu), % 0 to 0.25
0 to 0.4
Iron (Fe), % 96 to 98.1
43.1 to 51.8
Manganese (Mn), % 0.3 to 0.5
0 to 1.5
Molybdenum (Mo), % 0.3 to 0.6
6.0 to 6.6
Nickel (Ni), % 0 to 0.3
20 to 23
Nitrogen (N), % 0
0.21 to 0.32
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.9 to 1.2
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Vanadium (V), % 0 to 0.5
0