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SAE-AISI S1 Steel vs. S35315 Stainless Steel

Both SAE-AISI S1 steel and S35315 stainless steel are iron alloys. They have a modest 40% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 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 S1 steel and the bottom bar is S35315 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 73
78
Tensile Strength: Ultimate (UTS), MPa 690 to 1840
740

Thermal Properties

Latent Heat of Fusion, J/g 260
330
Melting Completion (Liquidus), °C 1500
1370
Melting Onset (Solidus), °C 1450
1330
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 41
12
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
34
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 2.6
5.7
Embodied Energy, MJ/kg 37
81
Embodied Water, L/kg 56
220

Common Calculations

PREN (Pitting Resistance) 5.9
27
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 64
26
Strength to Weight: Bending, points 22 to 42
23
Thermal Diffusivity, mm2/s 11
3.1
Thermal Shock Resistance, points 21 to 56
17

Alloy Composition

Carbon (C), % 0.4 to 0.55
0.040 to 0.080
Cerium (Ce), % 0
0.030 to 0.1
Chromium (Cr), % 1.0 to 1.8
24 to 26
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 91.6 to 96.7
33.6 to 40.6
Manganese (Mn), % 0.1 to 0.4
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.3
34 to 36
Nitrogen (N), % 0
0.12 to 0.18
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 1.2
1.2 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 1.5 to 3.0
0
Vanadium (V), % 0.15 to 0.3
0