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S31655 Stainless Steel vs. AISI 314 Stainless Steel

Both S31655 stainless steel and AISI 314 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 82% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S31655 stainless steel and the bottom bar is AISI 314 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
45
Fatigue Strength, MPa 300
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
78
Shear Strength, MPa 490
410
Tensile Strength: Ultimate (UTS), MPa 710
590
Tensile Strength: Yield (Proof), MPa 350
230

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Maximum Temperature: Corrosion, °C 430
440
Maximum Temperature: Mechanical, °C 1010
1100
Melting Completion (Liquidus), °C 1430
1380
Melting Onset (Solidus), °C 1380
1340
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 17
25
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.3
4.3
Embodied Energy, MJ/kg 46
62
Embodied Water, L/kg 160
190

Common Calculations

PREN (Pitting Resistance) 27
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
210
Resilience: Unit (Modulus of Resilience), kJ/m3 310
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
21
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 4.0
3.9
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.25
Chromium (Cr), % 19.5 to 21.5
23 to 26
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 63.2 to 71.9
46.7 to 56.5
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
19 to 22
Nitrogen (N), % 0.14 to 0.25
0
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
1.5 to 3.0
Sulfur (S), % 0 to 0.015
0 to 0.030