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AISI 201LN Stainless Steel vs. S32050 Stainless Steel

Both AISI 201LN stainless steel and S32050 stainless steel are iron alloys. They have 70% of their average alloy composition in common.

For each property being compared, the top bar is AISI 201LN stainless steel and the bottom bar is S32050 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 320
220
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 25 to 51
46
Fatigue Strength, MPa 340 to 540
340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
81
Shear Strength, MPa 530 to 680
540
Tensile Strength: Ultimate (UTS), MPa 740 to 1060
770
Tensile Strength: Yield (Proof), MPa 350 to 770
370

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 880
1100
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 12
31
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.6
6.0
Embodied Energy, MJ/kg 38
81
Embodied Water, L/kg 140
210

Common Calculations

PREN (Pitting Resistance) 20
48
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230 to 310
290
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 1520
330
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27 to 38
27
Strength to Weight: Bending, points 24 to 30
23
Thermal Diffusivity, mm2/s 4.0
3.3
Thermal Shock Resistance, points 16 to 23
17

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 16 to 17.5
22 to 24
Copper (Cu), % 0 to 1.0
0 to 0.4
Iron (Fe), % 67.9 to 73.5
43.1 to 51.8
Manganese (Mn), % 6.4 to 7.5
0 to 1.5
Molybdenum (Mo), % 0
6.0 to 6.6
Nickel (Ni), % 4.0 to 5.0
20 to 23
Nitrogen (N), % 0.1 to 0.25
0.21 to 0.32
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.020