Hastelloy Alloy C22 Chemical Composition, Grades, Table and Online Pdf

Hastelloy Alloy C22 enjoys a well-earned reputation for its excellent resistance to many highly aggressive chemicals under a wide range of temperatures. It is, therefore, availed in different industries, among them chemical processing, pollution control, and pharmaceuticals. It has a chemically composed majorly by nickel, chromium, molybdenum and tungsten which has higher resistance to oxidizing and reducing environments. Hastelloy C22 is manufactured in different grades to satisfy individualized needs, with each grade possessing an awesome strength and weldability that make it suitable in maintaining uniformity in dimensional stability during service. A well-designed table and chart giving the chemical content, grades, and properties of the alloy has become indispensable and is sought after for easy reference. Online pdf docs provide the practical fulfillment to the engineers, researchers and industry professionals in their material selection process and project planning.

Hastelloy Alloy C22 Chemical Composition And Grade Table

Hastelloy Alloy C22 is a diverse nickel-chromium-molybdenum-tungsten material, which stands out for its high resistance to many corrosive surroundings. Its chemical composition consists of nickel (Ni), chromium (Cr), molybdenum (Mo), tungsten (W), iron (Fe), cobalt (Co), manganese (Mn), vanadium (V), silicon (Si), phosphorus (P), sulfur (S), carbon (C), and others. Due to its good corrosion resistance ability, C22 can be applied in a variety of areas such as chemical processing, pollution control, and pulp and paper manufacturing. Attached is a composition and property table of the grade.-the given sentence has been humanized.

Hastelloy Alloy C22 Composition Table
Elements Cr Mo W Co Fe Mn V Si P S C Ni
Min (%) 20 12.5 2.5 - 2 - - - - - - -
Max (%) 22.5 14.5 3.5 2.5 6 0.5 0.35 0.08 0.02 0.02 0.015 Rem

Advantages and Disadvantages of Hastelloy Alloy C22


  • Exceptional Resistance to Oxidizing and Reducing Environments: Developed for use in various corrosive environments.

  • High Versatility: Applicable in various chemical processing tasks.

  • Excellent Fabricability: Highly ductile and easily shaped into intricate designs through basic machining processes.

  • Enhanced Weldability: Easier fabrication and assembly due to easy joining of materials.


  • Higher Cost Compared to Other Alloys: Initial costs could be very high in some cases.

  • Limited Availability of Certain Forms and Sizes: May require specially ordered sizes and configurations.

  • Moderate Thermal Stability: Mechanical properties may be compromised at high temperatures.

  • Susceptible to Crevice Corrosion in Certain Conditions: Requires careful considerations in design and application.

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