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S31727 Stainless Steel vs. AISI 316L Stainless Steel

Both S31727 stainless steel and AISI 316L stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S31727 stainless steel and the bottom bar is AISI 316L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
170 to 350
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
9.0 to 50
Fatigue Strength, MPa 240
170 to 450
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 83
80
Shear Modulus, GPa 78
78
Shear Strength, MPa 430
370 to 690
Tensile Strength: Ultimate (UTS), MPa 630
530 to 1160
Tensile Strength: Yield (Proof), MPa 270
190 to 870

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 1010
870
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
16

Otherwise Unclassified Properties

Base Metal Price, % relative 24
19
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 4.7
3.9
Embodied Energy, MJ/kg 64
53
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 35
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
77 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 190
93 to 1880
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
19 to 41
Strength to Weight: Bending, points 20
18 to 31
Thermal Shock Resistance, points 14
12 to 25

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 17.5 to 19
16 to 18
Copper (Cu), % 2.8 to 4.0
0
Iron (Fe), % 53.7 to 61.3
62 to 72
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 3.8 to 4.5
2.0 to 3.0
Nickel (Ni), % 14.5 to 16.5
10 to 14
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