Nickel Alloy C22 is a fully austenitic nickel-based superalloy that's cost-effective for clients seeking ease of forming combined with superior corrosion resistance. Also known as Inconel® 22 and Hastelloy® C22, this material is highly ductile, making cold forming easier. Inconel® 22 features resistance to an array of attacks from corrosion, pitting, crevice corrosion, intergranular, and stress corrosion cracking. Both cost effective and versatile; Inconel® 22 is used by a wide variety of industries.
Unit of Measure



N/A Round


N/A 0.781 inches19.8374 mm


N/A Hastelloy®

Nickel Alloy Compositions


N/A Alloy C22


N/A 8.69 lbs/in³0.314 g/cm³

ASTM Specification

N/A ASME Code Case 2226 ASME Code Case N-621 ASME SB 619/SB 775 ASME SB 622/SB 829 ASME SB 626/SB 751 ASTM B 619/B 775 ASTM B 622/B 829 ASTM B 626/B 751 DIN 17751 ISO 6207

Additional Information

Additional Information

N/A Common applications include chemical processing, paper and pulp, oil and gas, pesticide production, sour gas services, and waste incinerators. Providing considerable resistance at elevated temperatures, Inconel® 22 has been adopted for nuclear fuel reprocessing, flue gas desulfurization and seawater-based applications.

With the nickel as its primary base, Inconel® 22 alloy includes a chemical composition of 20-22.5% Cr, 12.5-14.5% Mo, a maximum of 2.5% Co, 2.5-3.5% W, and 2-6% Fe. For annealing treatment, temperature ranges should remain between 2020 and 2150 ºF. Inconel® 22 is suited for applications that require superior performance at elevated temperatures and for its full spectrum of anti-corrosion characteristics.