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S31727 Stainless Steel vs. AISI 317L Stainless Steel

Both S31727 stainless steel and AISI 317L stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 93% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S31727 stainless steel and the bottom bar is AISI 317L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
44
Fatigue Strength, MPa 240
220
Poisson's Ratio 0.28
0.28
Reduction in Area, % 56
56
Rockwell B Hardness 83
81
Shear Modulus, GPa 78
82
Shear Strength, MPa 430
380
Tensile Strength: Ultimate (UTS), MPa 630
550
Tensile Strength: Yield (Proof), MPa 270
250

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 1010
1010
Melting Completion (Liquidus), °C 1440
1400
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 24
21
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 4.7
4.3
Embodied Energy, MJ/kg 64
59
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 35
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
200
Resilience: Unit (Modulus of Resilience), kJ/m3 190
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
19
Strength to Weight: Bending, points 20
19
Thermal Shock Resistance, points 14
12

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 17.5 to 19
18 to 20
Copper (Cu), % 2.8 to 4.0
0
Iron (Fe), % 53.7 to 61.3
58 to 68
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 3.8 to 4.5
3.0 to 4.0
Nickel (Ni), % 14.5 to 16.5
11 to 15
Nitrogen (N), % 0.15 to 0.21
0 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030