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AISI 317L Stainless Steel vs. S31727 Stainless Steel

Both AISI 317L stainless steel and S31727 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 AISI 317L stainless steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

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 1400
1440
Melting Onset (Solidus), °C 1380
1390
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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