1/8-Hard 201LN Stainless Steel
1/8-hard AISI 201LN is AISI 201LN stainless steel in the 1/8-hard temper. The graph bars on the material properties cards below compare 1/8-hard AISI 201LN to: wrought austenitic stainless steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Brinell Hardness
260
Elastic (Young's, Tensile) Modulus
200 GPa 29 x 106 psi
Elongation at Break
40 %
Fatigue Strength
400 MPa 58 x 103 psi
Poisson's Ratio
0.28
Shear Modulus
77 GPa 11 x 106 psi
Shear Strength
590 MPa 86 x 103 psi
Tensile Strength: Ultimate (UTS)
870 MPa 130 x 103 psi
Tensile Strength: Yield (Proof)
460 MPa 67 x 103 psi
Thermal Properties
Latent Heat of Fusion
280 J/g
Maximum Temperature: Corrosion
410 °C 770 °F
Maximum Temperature: Mechanical
880 °C 1610 °F
Melting Completion (Liquidus)
1410 °C 2570 °F
Melting Onset (Solidus)
1370 °C 2490 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
15 W/m-K 8.7 BTU/h-ft-°F
Thermal Expansion
17 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.9 % IACS
Otherwise Unclassified Properties
Base Metal Price
12 % relative
Density
7.7 g/cm3 480 lb/ft3
Embodied Carbon
2.6 kg CO2/kg material
Embodied Energy
38 MJ/kg 16 x 103 BTU/lb
Embodied Water
140 L/kg 17 gal/lb
Common Calculations
PREN (Pitting Resistance)
20
Resilience: Ultimate (Unit Rupture Work)
290 MJ/m3
Resilience: Unit (Modulus of Resilience)
550 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
31 points
Strength to Weight: Bending
26 points
Thermal Diffusivity
4.0 mm2/s
Thermal Shock Resistance
19 points
Alloy Composition
| Fe | 67.9 to 73.5 | |
| Cr | 16 to 17.5 | |
| Mn | 6.4 to 7.5 | |
| Ni | 4.0 to 5.0 | |
| Cu | 0 to 1.0 | |
| Si | 0 to 0.75 | |
| N | 0.1 to 0.25 | |
| P | 0 to 0.045 | |
| C | 0 to 0.030 | |
| S | 0 to 0.015 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM A666: Standard Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar
Welding Metallurgy of Stainless Steels, Erich Folkhard et al., 2012
ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
Corrosion of Austenitic Stainless Steels: Mechanism, Mitigation and Monitoring, H. S. Khatak and B. Raj (editors), 2002
Austenitic Stainless Steels: Microstructure and Mechanical Properties, P. Marshall, 1984
ASM Specialty Handbook: Stainless Steels, J. R. Davis (editor), 1994
Advances in Stainless Steels, Baldev Raj et al. (editors), 2010