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AISI 201LN Stainless Steel vs. S31730 Stainless Steel

Both AISI 201LN stainless steel and S31730 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 (5, in this case) are not shown.

For each property being compared, the top bar is AISI 201LN stainless steel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 320
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 25 to 51
40
Fatigue Strength, MPa 340 to 540
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 530 to 680
370
Tensile Strength: Ultimate (UTS), MPa 740 to 1060
540
Tensile Strength: Yield (Proof), MPa 350 to 770
200

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 880
990
Melting Completion (Liquidus), °C 1410
1430
Melting Onset (Solidus), °C 1370
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 12
24
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.6
4.6
Embodied Energy, MJ/kg 38
63
Embodied Water, L/kg 140
180

Common Calculations

PREN (Pitting Resistance) 20
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230 to 310
170
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 1520
99
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27 to 38
19
Strength to Weight: Bending, points 24 to 30
18
Thermal Shock Resistance, points 16 to 23
12

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 16 to 17.5
17 to 19
Copper (Cu), % 0 to 1.0
4.0 to 5.0
Iron (Fe), % 67.9 to 73.5
52.4 to 61
Manganese (Mn), % 6.4 to 7.5
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 4.0 to 5.0
15 to 16.5
Nitrogen (N), % 0.1 to 0.25
0 to 0.045
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.010