Seamless Stainless Steel TP310H |UNS S31009|1.4845 Tube

TP310H (UNS S31009) Seamless Stainless Steel Tube Manufacturer & Supplier | Tengqi China
Tengqi is a specialized manufacturer and global exporter of TP310H (UNS S31009) seamless stainless steel tubes, based in Fujian, China. Engineered for high-temperature service, our TP310H tubing is the industry standard for environments requiring high creep strength and oxidation resistance.
As a leading 310H stainless steel seamless pipe supplier, we provide precision-drawn tubes that comply with ASTM A213, A312, and EN 10216-5 standards. The high carbon content in TP310H ensures superior mechanical properties and structural stability at sustained elevated temperatures, outperforming lower-carbon alternatives in heavy-duty thermal processing.
Technical Profile: TP310H (UNS S31009 / 1.4845)
TP310H is a high-chromium, high-nickel austenitic alloy designed for service in temperatures up to 1100°C (2012°F). Its optimized chemistry provides an excellent balance of ductility and strength.
Technical Attribute Manufacturing Range & Specifications
Outer Diameter (OD) 6.35mm – 406mm
Wall Thickness (WT) 0.5mm – 30mm (SCH 5S to SCH XXS)
Standard Compliance ASTM A213 (Boiler/Exchanger), ASTM A312 (Pipe)
Testing Protocols Hydrostatic, Eddy Current, Grain Size Analysis, Creep Testing
Surface Finish Solution Annealed & Pickled (AP), Bright Annealed (BA)
Performance Advantages of Tengqi TP310H Tubing
• Enhanced Creep Strength: The controlled carbon range (0.04–0.10%) provides significantly higher creep rupture strength compared to TP310S.
• Oxidation & Carburization Resistance: High Chromium (25%) and Nickel (20%) content forms a protective oxide layer that resists scaling in moderately carburizing atmospheres.
• Metallurgical Stability: Our advanced solution annealing process prevents sigma phase embrittlement, ensuring long-term ductility in high-heat cycles.
• Fujian Manufacturing Excellence: Our facility utilizes state-of-the-art cold-rolling and cold-drawing equipment to achieve tight di