ASTM B622 UNS N06022 Hastelloy C-22 Low Carbon Nickel Alloy Seamless Pipe is a high-performance seamless (weldless) pipe manufactured from a nickel-chromium-molybdenum alloy designed for highly corrosive environments. It offers exceptional resistance to all forms of corrosion, including pitting and crevice corrosion, and is valued for its versatility in both oxidizing and reducing conditions.
What is the C22 material grade?
C22 alloy is a nickel-chromium-molybdenum solid solution-strengthened high-temperature alloy with a chemical composition of 56% nickel, 22% chromium, and 13% molybdenum, with additions of iron, tungsten, and cobalt. It is commonly known by the trade name Hastelloy® C22 and the common designation UNS N06022.
Hastelloy C22 Tue Mechanical Properties
| Density | Melting Range | Yield Stress (0.2%Offset) | Tensile Stress | Elongation |
| 8.69 g/cm3 | 1399 °C (2550 °F) | Psi – 45000 , MPa – 310 | Psi – 1,00,000 , MPa – 690 | 45 % |
ASTM B622 Alloy C22 Pipe Chemical Composition
| Ni | C | Mo | Mn | Si | Fe | P | S | Co | Cr |
| Balance | 0.010 maximum | 12.5 – 14.5 | 0.50 maximum | 0.08 maximum | 2 – 6 | 0.02 maximum | 0.02 maximum | 2.5 maximum | 20 – 22.5 |
ASTM B622 Alloy C22 Pipes Equivalent grade
| NICKEL ALLOY | UNS | DIN / WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
| Hastelloy C22 | N06022 | 2.4602 | – | NiCr21Mo14W | NW 6022 | – | – |
Key Features:
Material: A nickel-based superalloy with high chromium and molybdenum content, renowned for its exceptional corrosion resistance.
Seamless Construction: Produced from solid billet through perforated bar, it forms seamless tubing without seams or welds, a critical feature for high-pressure applications.
Corrosion Resistance: Excellent resistance to localized corrosion caused by oxidizers and chlorides, as well as stress corrosion cracking.
Ductility and Weldability: The alloy's excellent ductility makes it easy to form and weld, offering excellent performance when joined to other materials.
Versatility: Withstands high mechanical stresses, high pressures, and high temperatures.
Key Benefits:
Wide Application: Suitable for a variety of chemical processes, including reactors, heat exchangers, and systems with corrosive media such as wet chlorine.
High Strength and Reliability: Its robust construction and chemical properties enable reliable operation even in harsh environments.
Long Service Life: Delivers a long service life in applications such as marine and offshore environments, as well as various industrial processing applications.
Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications, and we can provide customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneemetal.com.
