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AISI 201LN Stainless Steel vs. AISI 309S Stainless Steel

Both AISI 201LN stainless steel and AISI 309S stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AISI 201LN stainless steel and the bottom bar is AISI 309S stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 320
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 25 to 51
42
Fatigue Strength, MPa 340 to 540
210
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
78
Shear Strength, MPa 530 to 680
400
Tensile Strength: Ultimate (UTS), MPa 740 to 1060
580
Tensile Strength: Yield (Proof), MPa 350 to 770
230

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 880
1080
Melting Completion (Liquidus), °C 1410
1420
Melting Onset (Solidus), °C 1370
1370
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
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
19
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.6
3.6
Embodied Energy, MJ/kg 38
51
Embodied Water, L/kg 140
170

Common Calculations

PREN (Pitting Resistance) 20
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230 to 310
190
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 1520
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27 to 38
21
Strength to Weight: Bending, points 24 to 30
20
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 16 to 23
13

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 16 to 17.5
22 to 24
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 67.9 to 73.5
58.1 to 66
Manganese (Mn), % 6.4 to 7.5
0 to 2.0
Nickel (Ni), % 4.0 to 5.0
12 to 15
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030