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S31727 Stainless Steel vs. AISI 304N Stainless Steel

Both S31727 stainless steel and AISI 304N stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 29 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 304N stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190 to 360
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
9.1 to 45
Fatigue Strength, MPa 240
220 to 440
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 430
420 to 700
Tensile Strength: Ultimate (UTS), MPa 630
620 to 1180
Tensile Strength: Yield (Proof), MPa 270
270 to 850

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 1010
960
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 24
15
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 4.7
3.0
Embodied Energy, MJ/kg 64
43
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 35
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
98 to 280
Resilience: Unit (Modulus of Resilience), kJ/m3 190
180 to 1830
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
22 to 42
Strength to Weight: Bending, points 20
21 to 32
Thermal Shock Resistance, points 14
14 to 26

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 17.5 to 19
18 to 20
Copper (Cu), % 2.8 to 4.0
0
Iron (Fe), % 53.7 to 61.3
66.4 to 73.9
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 3.8 to 4.5
0
Nickel (Ni), % 14.5 to 16.5
8.0 to 10.5
Nitrogen (N), % 0.15 to 0.21
0.1 to 0.16
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