A HASTELLOY sheet isa nickel-based alloy sheet known for its exceptional resistance to corrosion, high strength, and formability, making it suitable for use in extremely corrosive and high-temperature environments. Common examples include HASTELLOY C276, which is resistant to a wide range of chemicals and chlorides, and HASTELLOY C22, which offers superior resistance to oxidizing acids and chloride-containing environments. These sheets are used in applications like chemical processing equipment, heat exchangers, and pollution control systems.
Key characteristics
Corrosion resistance:HASTELLOY sheets excel in highly corrosive environments, resisting general corrosion, pitting, crevice corrosion, and stress corrosion cracking.
High temperature strength:They maintain high strength at elevated temperatures.
Alloy composition:They are typically nickel-based alloys, often containing significant amounts of molybdenum, chromium, and tungsten.
Weldability and formability:They can be welded and fabricated using standard practices for austenitic stainless steels.
Common types and their properties
HASTELLOY C276:A widely used alloy that is resistant to both oxidizing and reducing acids and chlorides. Its high molybdenum content makes it particularly resistant to pitting and crevice corrosion. It is used in applications such as chemical processing and oil and gas recovery.
HASTELLOY C22:An enhanced version of C276, offering superior resistance to oxidizing agents like sulfuric, hydrochloric, and phosphoric acids. It also performs exceptionally well in chloride-containing environments and is resistant to stress corrosion cracking.
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