Alloy 2.4602 Hastelloy C22 Hastelloy C276 Nickel Seamless Piping

Alloy C22 is one of the most corrosion-resistant alloys available, even outperforming C276 and 625. It is resistant to almost all reducing and oxidizing environments, including strong oxidizers, seawater, and organic acids. In addition, C22 has excellent resistance to chloride-induced localized corrosion, including pitting, crevice corrosion, and stress corrosion cracking.

OXIDATION RESISTANCE:

C22 has excellent resistance to oxidation, carburization, and sulfidation at elevated temperatures. However, C22 should not be used at temperatures above 1250°F due to the possible formation of embrittling phases.

MECHANICAL PROPERTIES:

C22 is typically provided in the annealed condition with a minimum yield strength of 45 ksi. However, C22 can be cold worked to higher strength levels.
 

HEAT TREATMENT:

C22 is typically annealed at 2050°F (1121°C), followed by rapid cooling.
 

WORKABILITY:

C22 can be hot worked or cold worked. However, C22 work-hardens rapidly. Therefore, cold working must often be performed in stages with intervening anneals. Parts should be annealed after cold working.

Hastelloy C22 Product Forms and Standards:

Hastelloy C22 Specifications:

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