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S31727 Stainless Steel vs. AISI 201LN Stainless Steel

Both S31727 stainless steel and AISI 201LN stainless steel are iron alloys. They have 80% 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 201LN stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
210 to 320
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
25 to 51
Fatigue Strength, MPa 240
340 to 540
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 430
530 to 680
Tensile Strength: Ultimate (UTS), MPa 630
740 to 1060
Tensile Strength: Yield (Proof), MPa 270
350 to 770

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 1010
880
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 24
12
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 4.7
2.6
Embodied Energy, MJ/kg 64
38
Embodied Water, L/kg 180
140

Common Calculations

PREN (Pitting Resistance) 35
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
230 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 190
310 to 1520
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
27 to 38
Strength to Weight: Bending, points 20
24 to 30
Thermal Shock Resistance, points 14
16 to 23

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 17.5 to 19
16 to 17.5
Copper (Cu), % 2.8 to 4.0
0 to 1.0
Iron (Fe), % 53.7 to 61.3
67.9 to 73.5
Manganese (Mn), % 0 to 1.0
6.4 to 7.5
Molybdenum (Mo), % 3.8 to 4.5
0
Nickel (Ni), % 14.5 to 16.5
4.0 to 5.0
Nitrogen (N), % 0.15 to 0.21
0.1 to 0.25
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 0.015