ASTM A182 F321 High-Temperature Resistant Corrosion Resistant Stainless Steel Weld Neck Flange ASME B16.5

The ASTM A182 F321 Stainless Steel Flange is a high-performance, forged piping component engineered for demanding high-temperature and corrosive service environments. As a variant of austenitic stainless steel, Grade F321 is stabilized with titanium, providing superior resistance to intergranular corrosion while maintaining excellent mechanical strength at elevated temperatures. Manufactured in compliance with stringent international standards including ASTM A182/A182M, these flanges are commonly used with dimensional standards such as ASME B16.5. Available in various types (including Weld Neck), pressure classes (150LB to 2500LB), and sizes to meet diverse industrial piping system requirements.

The following tables summarize the key composition and room-temperature mechanical properties as per standard specifications. Note that mechanical strength values vary with temperature for high-temperature applications.

Thanks to its excellent high-temperature strength and corrosion resistance, ASTM A182 F321 flanges are widely used in critical industries: