Common Questions about Hastelloy C22/C276 Pipes/Tubes

What are the main differences between Hastelloy C22 and C276?
- Hastelloy C22 offers better resistance to pitting and crevice corrosion, while C276 is known for its excellent resistance to stress corrosion cracking and high-temperature stability.
What are the typical applications for these alloys?
- Hastelloy C22 is used in chemical processing, wastewater treatment, and pharmaceutical industries. Hastelloy C276 is commonly found in oil and gas, nuclear, and pulp and paper industries.
How do these alloys perform in corrosive environments?
- Both alloys exhibit outstanding corrosion resistance, with C22 providing enhanced protection against oxidizing environments and C276 excelling in reducing conditions.
Are Hastelloy C22 and C276 weldable?
- Yes, both alloys can be welded using various techniques, though proper procedures should be followed to maintain their corrosion resistance.
What forms are available for these alloys?
- Hastelloy C22 and C276 are available as pipes, tubes, sheets, and fittings.
What are the temperature limits for these alloys?
- Hastelloy C276 can withstand temperatures up to about 2000°F (1093°C), while C22 is suitable for similar high-temperature applications but may not perform as well in extreme conditions.
How do the costs compare?
- Hastelloy C276 is generally more expensive than C22 due to its stronger resistance to harsh environments.