{"id":609,"date":"2024-07-18T12:05:30","date_gmt":"2024-07-18T06:35:30","guid":{"rendered":"https:\/\/www.spalloys.com\/blog\/?p=609"},"modified":"2026-01-24T14:02:06","modified_gmt":"2026-01-24T08:32:06","slug":"difference-between-hastelloy-c276-vs-c22","status":"publish","type":"post","link":"https:\/\/www.spalloys.com\/blog\/difference-between-hastelloy-c276-vs-c22\/","title":{"rendered":"Difference Between Hastelloy C276 vs C22"},"content":{"rendered":"

What is Hastelloy C276?<\/span><\/h2>\n

Hastelloy C276 is a nickel-molybdenum-chromium superalloy with added tungsten designed for exceptional corrosion resistance in a wide range of severe environments. This alloy is known for its ability to withstand high temperatures and harsh conditions, making it ideal for chemical processing, pollution control, pulp and paper production, and waste treatment. It also exhibits excellent resistance to pitting, stress corrosion cracking, and oxidizing atmospheres up to 1900\u00b0F (1038\u00b0C).<\/span><\/p>\n

What is Hastelloy C22?<\/span><\/h2>\n

Hastelloy C22 is another nickel-chromium-molybdenum alloy with enhanced resistance to pitting, crevice corrosion, and stress corrosion cracking. This alloy also includes tungsten and exhibits outstanding resistance to oxidizing and non-oxidizing chemicals. Hastelloy C22 is widely used in various applications, including chemical processing, pollution control, flue gas desulfurization, and marine environments due to its versatility and reliability in corrosive settings.<\/span><\/p>\n

Difference Between Hastelloy C276 vs C22
\n<\/span><\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n
Feature<\/strong><\/td>\nHastelloy C276<\/strong><\/td>\nHastelloy C22<\/strong><\/td>\n<\/tr>\n
Composition<\/td>\nNickel, molybdenum, chromium, iron<\/td>\nNickel, chromium, molybdenum, iron<\/td>\n<\/tr>\n
Corrosion Resistance<\/td>\nExcellent resistance to pitting, crevice corrosion, and stress-corrosion cracking<\/td>\nSuperior resistance to localized corrosion (pitting and crevice) and general corrosion<\/td>\n<\/tr>\n
Temperature Range<\/td>\nEffective in high temperatures up to 1900\u00b0F (1038\u00b0C)<\/td>\nEffective in high temperatures up to 1250\u00b0F (677\u00b0C)<\/td>\n<\/tr>\n
Weldability<\/td>\nGood<\/td>\nExcellent<\/td>\n<\/tr>\n
Applications<\/td>\nChemical processing, pollution control, waste treatment<\/td>\nPharmaceutical, chemical processing, waste treatment, marine environments<\/td>\n<\/tr>\n
Longevity<\/td>\nHigh<\/td>\nHigher due to better overall corrosion resistance<\/td>\n<\/tr>\n
Machinability<\/td>\nModerate<\/td>\nModerate to difficult<\/td>\n<\/tr>\n
Advantages<\/td>\nVersatile use in harsh environments -Good resistance to oxidizing and reducing conditions<\/td>\nBetter overall resistance to a wider range of conditions – Enhanced resistance to oxidizing media<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n


\nBoth materials are excellent for use in corrosive environments, but Hastelloy C22 has better resistance to a broader range of conditions, making it more versatile for specific applications.<\/span><\/p>\n

Hastelloy C22 vs C276 Chemical Composition<\/span><\/h2>\n

The chemical composition of these alloys determines their properties and suitability for different environments. Both alloys contain nickel, chromium, and molybdenum, but varying proportions influence their performance in corrosive environments.<\/span><\/p>\n

\n\n\n\n\n\n\n\n\n
Element<\/strong><\/td>\nHastelloy C276<\/strong><\/td>\nHastelloy C22<\/strong><\/td>\n<\/tr>\n
Nickel (Ni)<\/td>\n57%<\/td>\n56%<\/td>\n<\/tr>\n
Chromium (Cr)<\/td>\n15.50%<\/td>\n22%<\/td>\n<\/tr>\n
Molybdenum (Mo)<\/td>\n16%<\/td>\n13%<\/td>\n<\/tr>\n
Tungsten (W)<\/td>\n3.50%<\/td>\n3%<\/td>\n<\/tr>\n
Iron (Fe)<\/td>\n5%<\/td>\n3%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Temperature Range<\/span><\/h2>\n

Hastelloy C276 and C22 are designed to perform well in high-temperature environments but have different maximum temperature limits. Hastelloy C276 can withstand higher temperatures than Hastelloy C22, making it more suitable for extreme temperature applications.<\/span><\/p>\n

\n\n\n\n\n\n
Alloy<\/strong><\/td>\nMaximum Temperature<\/strong><\/td>\n<\/tr>\n
Hastelloy C276<\/td>\n1900\u00b0F (1038\u00b0C)<\/td>\n<\/tr>\n
Hastelloy C22<\/td>\n1250\u00b0F (677\u00b0C)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Application of Hastelloy C22 vs C276<\/span><\/h2>\n

Hastelloy C276<\/span><\/strong><\/h3>\n