What is Hastelloy C276 Flanges

Hastelloy C276 Flanges The nickel, chromium, and molybdenum alloy known as Hastelloy is used to make Hastelloy C276 Flanges. The composition also contains carbon, manganese, silicon, sulfur, cobalt, iron, and phosphorus. It also contains 14.5% chromium, 15% molybdenum, and 50.99% nickel. The high melting point of Hastelloy C276 Flanges is 1370 degrees Celsius. The flanges’ greater operating temperatures are made possible by their high melting point. Additionally, the material has a minimum yield strength of 355MPa and a minimum tensile strength of 790MPa.

Most Common Uses of Hastelloy Flanges

Hastelloy C276 is a corrosion-resistant alloy that works well in a range of harsh conditions, including oxidation and reduction. Acids like sulfuric and chloric are likewise resistant to Hastelloy flanges. Being one of the most common and corrosion-resistant alloys, it performs better than the majority of other nickel alloy grades like Inconel and Monel for chemical processing applications.

Due to their ability to withstand a variety of harsh media, hastelloy flanges are frequently used in chemical manufacturing applications, including those that are exposed to solvents, formic and acetic acids, acetic anhydride, moist chlorine gas, hypochlorite, chlorine solutions, and phosphoric acid.

Property Comparison of Hastelloy C22 and C276 Flanges

Corrosion Resistance

Hastelloy C22 Flanges, an alloy with high corrosion resistance, also has oxidation resistance. The flanges have an unusually magnetic surface quality. Hastelloy C276 is a high-strength, low-allergy alloy that can be used in circumstances where corrosion resistance is essential. Along with superior wear resistance, it has excellent machinability, corrosion resistance, and toughness.


Hastelloy C22 can be machined, although it’s not as straightforward as you might think. Hastelloy C22 is a cobalt and chromium alloy that may be machined into various shapes. Hastelloy C276 can be machined, but you must use the proper lubricants and put on protective gear. Hastelloy C276 is a machinable metal. If you have the proper lubricants, you can process Hastelloy C276 plates, bars, and rings using standard tools and machinery.