309H Stainless Steel Round Bar (UNS S30909) provides high creep strength and oxidation resistance for furnace, refinery, and high-temperatur
The 309H Stainless Steel Round Bar (UNS S30909) is a high-carbon variant of Grade 309 austenitic stainless steel designed for high-temperature strength and creep resistance in demanding industrial environments. Manufactured to global standards including ASTM A276, ASTM A479, ASME SA276, and ASME SA479, this round bar offers exceptional performance where long-term heat exposure and mechanical durability are required.
With elevated carbon content and a robust combination of chromium and nickel, the 309H round bar delivers excellent oxidation and scaling resistance at elevated temperatures and superior stability in continuous or cyclic thermal service. Its resistance to sulfidation and carburization also makes it suitable for critical components in thermal processing, petrochemical, and energy applications.
