A358 GR 904L

A358 GR 904L pipes are available in sizes ranging from 6 inches to 60 inches nominal bore (NB) with wall thickness options adhering to schedules such as SCH 10, SCH 40, SCH 80, and SCH XXS. The exceptional mechanical properties include a tensile strength of 490 MPa and a minimum yield strength of 220 MPa, ensuring high durability and performance under extreme conditions. With a high nickel (23-28%) and molybdenum (4-5%) content, A358 GR 904L offers outstanding resistance to pitting and crevice corrosion, particularly in chloride-rich environments.

The chemical composition features a carefully balanced blend of chromium (19-23%), nickel, and molybdenum, along with trace amounts of copper and nitrogen, enhancing its ability to withstand acidic environments like sulfuric and phosphoric acids. These pipes are available in various forms, including round, square, and rectangular, with end finishes such as plain, beveled, and threaded. Surface treatments, including polished, pickled, and passivated finishes, further enhance their corrosion resistance and durability.

Dimensional tolerances for A358 GR 904L pipes are meticulously maintained, with an outside diameter variation of ±1% and wall thickness tolerances of +12.5%/-10%. The manufacturing process incorporates heat treatments such as solution annealing at 1095-1175°C, ensuring optimal mechanical properties and corrosion resistance. Rigorous testing methods, including ultrasonic, hydrostatic, and intergranular corrosion tests, guarantee compliance with international standards.

With a strong commitment to quality and timely delivery, Kwality Steelage Pvt. Ltd. has earned a reputation for excellence across global markets, including Europe, the Middle East, and Southeast Asia. Contact us today to explore our range of A358 GR 904L Stainless Steel Pipes and find a solution tailored to your industrial requirements.