Stainless Steel 347 Forgings are composed of chromium (17–19%), nickel (9–13%), and columbium (niobium) along with tantalum, which helps stabilize the alloy against intergranular corrosion. The typical mechanical properties feature a tensile strength of about 515 MPa, a yield strength of 205 MPa, and an elongation of 40%. It boasts a Brinell hardness of roughly 201 HB. This alloy showcases excellent mechanical performance and oxidation resistance at temperatures reaching up to 870°C. Its stabilized structure effectively prevents carbide precipitation during welding or prolonged heat exposure, ensuring durability and resilience in harsh thermal and chemical conditions.
| Standard | ASTM A182, ASME SA182 |
| 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. |
Stainless Steel 347 Forgings find extensive use in applications that demand outstanding resistance to heat and intergranular corrosion. Key sectors include aerospace, petrochemical, power generation, and marine industries. Common applications encompass aircraft exhaust systems, heat exchangers, furnace components, boiler tubes, and chemical processing equipment. The 347 alloy is particularly effective in high-temperature service conditions due to its remarkable creep strength and resistance to sensitization. It is also well-suited for environments where durability and reliability are paramount.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Neil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kolkata, India
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