ASTM B622 Hastelloy C276 (UNS N10276) Seamless Pipe for Acid Processing, Chemical Equipment, Heat Exchangers and Corrosive Piping

ASTM B622 Hastelloy C276 (UNS N10276) Seamless Pipe

Hastelloy C276 (UNS N10276) Seamless Pipes are manufactured to ASTM B622 requirements and offer excellent resistance to a wide range of corrosive media, including strong acids, chlorides, and oxidizing environments. With high corrosion resistance and reliable mechanical performance, they are widely used in acid processing, chemical equipment, heat exchangers, pollution control systems, and other demanding corrosive-service piping applications.

Key Features

• Excellent resistance to a wide range of corrosive media, including strong acids, chlorides, and oxidizing environments.
• Provides strong resistance to localized corrosion in chloride-containing and aggressive chemical environments.
• Suitable for demanding chemical and corrosive-service piping applications.
• Maintains good mechanical and corrosion-resistant properties under elevated-temperature service conditions.
• Manufactured without longitudinal welds, providing reliable integrity for pressure and corrosive-service applications.
• Suitable for machining, forming, welding and fabrication according to applicable procedures.

Typical Applications

• Used for sulfuric acid, hydrochloric acid and other aggressive acid-handling systems.
• Suitable for reactors, process piping, vessels and other chemical processing equipment.
• Used in heat-transfer systems exposed to corrosive chemical media and chloride-containing environments.
• Suitable for corrosive process piping, chemical injection systems and demanding hydrocarbon-processing environments.
• Suitable for corrosive marine environments, offshore equipment and seawater-related process systems.

Chemical Composition (wt%)

Mechanical Properties (Solution Annealed + Water Quenched)

Precautions

• Control service temperature : Follow design codes and actual service conditions.
• Proper welding and fabrication : Use suitable procedures to maintain corrosion resistance.
• Prevent iron contamination : Avoid direct contact with carbon steel and similar materials.
• Consider work hardening : Use proper cutting parameters and sharp tools.
• Keep surfaces clean : Prevent oil, dust and other contaminants.

Quality Assurance

Hastelloy C276 (UNS N10276) seamless pipes are manufactured in accordance with ASTM B622 / ASME SB622 requirements. Each pipe is fully inspected for dimensions, surface quality, chemical composition, mechanical properties and NDT as required. Full material traceability is maintained, with MTRs, heat-treatment records and inspection reports provided upon request.

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