Hastelloy C22

┃Material

UNS N06022, Alloy C-22, W.Nr. 2.46022, Hastelloy® C-22

Note that the designation “Hastelloy®” is registered trademarks of Haynes International Inc.

┃ Overview

UNS N06022 is a fully austenitic advanced corrosion-resistant alloy that offers resistance to both aqueous corrosion and attack at elevated temperatures, including general corrosion, pitting, crevice corrosion, intergranular attack, and stress corrosion cracking. Hastelloy C-22 typically contains 22% chromium, 14% molybdenum, and 3% tungsten. The alloy’s high content of chromium gives it good resistance to wet corrosion by oxidizing media. Its contents of molybdenum and tungsten give the alloy resistance to wet reducing media.

┃ Chemical Composition (%)

┃ Mechanical Property

┃ Application

Petrochemical Processing: Heat exchangers and distillation columns

Chemical Processing: Chemical reactors, vessels, and piping systems

Pharmaceutical and Biotechnology: Mixers, and storage vessels where chemical resistance and product purity are critical.

Pollution Control: Scrubbers, absorbers, and exhaust systems where high levels of corrosive gases are present

Pulp and Paper Industry: Digester and bleach plant equipment

Waste Treatment: Handling and processing systems for aggressive chemicals, acidic waste streams, and corrosive gases

┃Corrosion Resistance

The major attribute of Alloy C-22 is outstanding resistance to a broad range of corrosive media. It resists oxidizing acids as well as reducing acids such as sulfuric and hydrochloric. Some other corrosive chemicals to which the alloy has high resistance are oxidizing acid chlorides, wet chlorine, formic and acetic acids, ferric and cupric chlorides, sea water, brines and many mixed or contaminated chemical solutions, both organic and inorganic.

┃Machining

Hastelloy C-22 is readily fabricated by standard procedures for nickel alloys. Although ductile enough to be formed by cold working, intermediate annealing may be necessary due to work hardening.

┃Welding

Hastelloy C-22 exhibits excellent weldability. Welding can be by gas tungsten-arc, gas metal-arc, and shielded metal-arc processes. Matched composition welding products, INCONEL Welding Electrode 122 and Filler Metal 622, are available. Overmatching composition welds may be deposited with INCO-WELD® Filler Metal 686 CPT® or INCO-WELD Welding Electrode 686CPT.

┃ Product Forms

Ø Bar & Rod

Ø Plate & Sheet

Ø Coil & Strip

Ø Pipe & Tube

Ø Fitting: Flange, Tee, Elbow, Reducer etc.

Ø Forging: Ring, Shaft, Circle, Block etc.

┃ Note

Ronsco is a supplier with more than 27 years of experience in the stainless steel and nickel alloy field, we always adheres to the business phiosophy of "customer-centered", tries its best to meet the requirements of customers and pursues win-win cooperation with customers. Are you looking for metal products one-stop supplier! Contact Us Now! Email: service@ronsteel.com