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S35140 Stainless Steel vs. S35115 Stainless Steel

Both S35140 stainless steel and S35115 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 92% of their average alloy composition in common.

For each property being compared, the top bar is S35140 stainless steel and the bottom bar is S35115 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
46
Fatigue Strength, MPa 250
280
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 88
86
Shear Modulus, GPa 78
79
Shear Strength, MPa 460
470
Tensile Strength: Ultimate (UTS), MPa 690
670
Tensile Strength: Yield (Proof), MPa 310
310

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 500
440
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1420
1420
Melting Onset (Solidus), °C 1370
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 31
26
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 5.5
4.8
Embodied Energy, MJ/kg 78
67
Embodied Water, L/kg 190
190

Common Calculations

PREN (Pitting Resistance) 28
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
250
Resilience: Unit (Modulus of Resilience), kJ/m3 250
240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
24
Strength to Weight: Bending, points 22
22
Thermal Diffusivity, mm2/s 3.7
3.9
Thermal Shock Resistance, points 16
15

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 20 to 22
23 to 25
Iron (Fe), % 44.1 to 52.7
47.6 to 55.8
Manganese (Mn), % 1.0 to 3.0
0 to 1.0
Molybdenum (Mo), % 1.0 to 2.0
1.5 to 2.5
Nickel (Ni), % 25 to 27
19 to 22
Niobium (Nb), % 0.25 to 0.75
0
Nitrogen (N), % 0.080 to 0.2
0.2 to 0.3
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 0.75
0.5 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.015