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SAE-AISI S2 Steel vs. N08135 Stainless Steel

Both SAE-AISI S2 steel and N08135 stainless steel are iron alloys. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 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 S2 steel and the bottom bar is N08135 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
80
Tensile Strength: Ultimate (UTS), MPa 670 to 1940
570

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
39
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 2.1
6.8
Embodied Energy, MJ/kg 30
94
Embodied Water, L/kg 49
220

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24 to 69
19
Strength to Weight: Bending, points 22 to 44
19
Thermal Shock Resistance, points 23 to 68
13

Alloy Composition

Carbon (C), % 0.4 to 0.55
0 to 0.030
Chromium (Cr), % 0
20.5 to 23.5
Copper (Cu), % 0 to 0.25
0 to 0.7
Iron (Fe), % 96 to 98.1
30.2 to 42.3
Manganese (Mn), % 0.3 to 0.5
0 to 1.0
Molybdenum (Mo), % 0.3 to 0.6
4.0 to 5.0
Nickel (Ni), % 0 to 0.3
33 to 38
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.9 to 1.2
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
0.2 to 0.8
Vanadium (V), % 0 to 0.5
0