Half-Hard 301LN Stainless Steel
Half-hard AISI 301LN is AISI 301LN stainless steel in the half-hard temper. It has the highest strength and lowest ductility compared to the other variants of AISI 301LN stainless steel. The graph bars on the material properties cards below compare half-hard AISI 301LN 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
320
Elastic (Young's, Tensile) Modulus
200 GPa 28 x 106 psi
Elongation at Break
23 %
Fatigue Strength
520 MPa 75 x 103 psi
Poisson's Ratio
0.28
Shear Modulus
77 GPa 11 x 106 psi
Shear Strength
670 MPa 97 x 103 psi
Tensile Strength: Ultimate (UTS)
1060 MPa 150 x 103 psi
Tensile Strength: Yield (Proof)
770 MPa 110 x 103 psi
Thermal Properties
Latent Heat of Fusion
280 J/g
Maximum Temperature: Corrosion
410 °C 770 °F
Maximum Temperature: Mechanical
890 °C 1640 °F
Melting Completion (Liquidus)
1430 °C 2600 °F
Melting Onset (Solidus)
1380 °C 2520 °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
16 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
2.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.7 % IACS
Otherwise Unclassified Properties
Base Metal Price
13 % relative
Density
7.8 g/cm3 490 lb/ft3
Embodied Carbon
2.7 kg CO2/kg material
Embodied Energy
39 MJ/kg 17 x 103 BTU/lb
Embodied Water
130 L/kg 16 gal/lb
Common Calculations
PREN (Pitting Resistance)
19
Resilience: Ultimate (Unit Rupture Work)
220 MJ/m3
Resilience: Unit (Modulus of Resilience)
1520 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
38 points
Strength to Weight: Bending
30 points
Thermal Diffusivity
4.0 mm2/s
Thermal Shock Resistance
24 points
Alloy Composition
| Fe | 70.7 to 77.9 | |
| Cr | 16 to 18 | |
| Ni | 6.0 to 8.0 | |
| Mn | 0 to 2.0 | |
| Si | 0 to 1.0 | |
| N | 0.070 to 0.2 | |
| P | 0 to 0.045 | |
| C | 0 to 0.030 | |
| S | 0 to 0.030 |
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
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