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S31655 Stainless Steel vs. S35315 Stainless Steel

Both S31655 stainless steel and S35315 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 68% of their average alloy composition in common.

For each property being compared, the top bar is S31655 stainless steel and the bottom bar is S35315 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
46
Fatigue Strength, MPa 300
280
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 88
82
Shear Modulus, GPa 78
78
Shear Strength, MPa 490
520
Tensile Strength: Ultimate (UTS), MPa 710
740
Tensile Strength: Yield (Proof), MPa 350
300

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Maximum Temperature: Corrosion, °C 430
450
Maximum Temperature: Mechanical, °C 1010
1100
Melting Completion (Liquidus), °C 1430
1370
Melting Onset (Solidus), °C 1380
1330
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 17
34
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.3
5.7
Embodied Energy, MJ/kg 46
81
Embodied Water, L/kg 160
220

Common Calculations

PREN (Pitting Resistance) 27
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
270
Resilience: Unit (Modulus of Resilience), kJ/m3 310
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
26
Strength to Weight: Bending, points 23
23
Thermal Diffusivity, mm2/s 4.0
3.1
Thermal Shock Resistance, points 16
17

Alloy Composition

Carbon (C), % 0 to 0.030
0.040 to 0.080
Cerium (Ce), % 0
0.030 to 0.1
Chromium (Cr), % 19.5 to 21.5
24 to 26
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 63.2 to 71.9
33.6 to 40.6
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0.5 to 1.5
0
Nickel (Ni), % 8.0 to 9.5
34 to 36
Nitrogen (N), % 0.14 to 0.25
0.12 to 0.18
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
1.2 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.030