Home > Stainless Steel > Stainless Steel 317/317L Bolts
Stainless Steel 317/317L Bolts are top-notch fasteners crafted for situations where outstanding corrosion resistance is a must, particularly in environments filled with chlorides, acids, and other harsh chemicals. These bolts are made from high-molybdenum austenitic stainless steel, which provides better protection against pitting and crevice corrosion than the standard 316 grades. The 317 variant boasts high strength, while the low-carbon 317L version enhances weldability and reduces the risk of sensitization. Thanks to their durability, toughness, and long-lasting stability, SS 317/317L Bolts are perfect for chemical processing, marine, pharmaceutical, and industrial applications where reliability in tough conditions is crucial.
These bolts are made up of chromium (18–20%), nickel (11–15%), and molybdenum (3–4%), with the 317L grade featuring low carbon levels to avoid carbide precipitation during welding. They typically achieve a tensile strength of 515–690 MPa and a yield strength of about 205 MPa. With excellent resistance to corrosion in acidic settings, strong mechanical stability across various temperatures, and high resistance to stress corrosion cracking, their robust composition guarantees outstanding performance in chloride-rich and chemically aggressive environments.
| Standard | ASTM B564, ASME SB564 |
| Specification | DIN, ASTM, BS and all International Standards |
| Flat bar blocks | up to 27″ width and 15,000 lbs. |
| Cylinders and sleeves | up to 50″ maximum O.D. and 65″ maximum length |
| Discs and hubs | up to 50″ diameter and 20,000 lbs. |
| Rolled, hand forged or mandrel forged rings | up to 84″ maximum O.D. and 40″ maximum length |
| Rounds, shafts and step shafts | up to 144″ maximum length and 20,000 lbs. |
| Forging Types | Impression Die Forging, Open Die Forging, Seamless Rolled Forging, Hot Forging, Cold Forging, Open die hammer forging, Impression die drop forging, Closed Die Forging, Press Forging, Upset Forging, Compression Forging, Swaging, Rotary Forging, Roll forging. |
| Grade | C | Mn | Si | S | Co | Ni | Cr | Fe | Mo | P |
| Hastelloy B2 | 0.02 max | 1.0 max | 0.1 max | 0.03 max | 1.0 max | Bal | 1.0 max | 2.0 max | 26 – 30 | 0.04 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 9.2 g/cm3 | 1370 °C (2500 ºF ) | Psi – 1,10,000, MPa – 760 | Psi – 51000, MPa – 350 | 40 % |
| STANDARD | WERKSTOFF NR. | UNS |
| Hastelloy B2 | 2.4617 | N10665 |
You’ll find Stainless Steel 317/317L Bolts commonly used in chemical processing plants, petrochemical industries, pulp and paper mills, marine systems, and pollution control equipment. They’re also utilized in heat exchangers, evaporators, food processing machinery, pharmaceutical equipment, and pipelines that transport corrosive fluids. Their remarkable corrosion resistance and durability make them a go-to choice for industries that demand long-term reliability in challenging chemical environments. SS 317/317L Bolts provide secure fastening, extended service life, and optimal performance in demanding industrial settings.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
