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S31730 Stainless Steel vs. AISI 316N Stainless Steel

Both S31730 stainless steel and AISI 316N stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is S31730 stainless steel and the bottom bar is AISI 316N stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
190 to 350
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
9.0 to 39
Fatigue Strength, MPa 170
230 to 450
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 370
420 to 690
Tensile Strength: Ultimate (UTS), MPa 540
620 to 1160
Tensile Strength: Yield (Proof), MPa 200
270 to 870

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 990
940
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1390
1400
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 4.6
3.9
Embodied Energy, MJ/kg 63
53
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 30
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
95 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 99
180 to 1880
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
22 to 41
Strength to Weight: Bending, points 18
20 to 31
Thermal Shock Resistance, points 12
14 to 26

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 17 to 19
16 to 18
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 52.4 to 61
61.9 to 71.9
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 3.0 to 4.0
2.0 to 3.0
Nickel (Ni), % 15 to 16.5
10 to 14
Nitrogen (N), % 0 to 0.045
0.1 to 0.16
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.010
0 to 0.030