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Annealed AISI 201LN vs. Annealed AISI 301L

Both annealed AISI 201LN and annealed AISI 301L are iron alloys. Both are furnished in the annealed condition. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is annealed AISI 201LN and the bottom bar is annealed AISI 301L.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 51
50
Fatigue Strength, MPa 340
240
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 87
88
Shear Modulus, GPa 77
77
Shear Strength, MPa 530
440
Tensile Strength: Ultimate (UTS), MPa 740
620
Tensile Strength: Yield (Proof), MPa 350
250

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 880
890
Melting Completion (Liquidus), °C 1410
1430
Melting Onset (Solidus), °C 1370
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
13
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.6
2.7
Embodied Energy, MJ/kg 38
39
Embodied Water, L/kg 140
130

Common Calculations

PREN (Pitting Resistance) 20
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
250
Resilience: Unit (Modulus of Resilience), kJ/m3 310
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
22
Strength to Weight: Bending, points 24
21
Thermal Diffusivity, mm2/s 4.0
4.1
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 16 to 17.5
16 to 18
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 67.9 to 73.5
70.7 to 78
Manganese (Mn), % 6.4 to 7.5
0 to 2.0
Nickel (Ni), % 4.0 to 5.0
6.0 to 8.0
Nitrogen (N), % 0.1 to 0.25
0 to 0.2
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030