Gnee Steel is a company specializing in the production of Hastelloy C276, Nickel 201, Nickel 202, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy 800, Incoloy 800H/HT, Incoloy 825, Monel 400, Monel K500, and other high-temperature alloy materials. We are professionally engaged in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power generation, automotive, nuclear energy, and other fields, and we can provide customized alloy material solutions according to customer needs.
The differences between Hastelloy C22 and C276 alloy strips
Both Hastelloy C22 and C276 alloy strips are high-performance nickel-chromium-molybdenum alloy strips used in harsh corrosive environments, but C22 strips offer superior overall corrosion resistance, especially against pitting corrosion, crevice corrosion, and in oxidizing environments. C22 strips typically contain a higher chromium content (approximately 22%) and a lower molybdenum content, making them more suitable for oxidizing media; while C276 alloy strips (with lower chromium content and higher molybdenum/tungsten content) perform exceptionally well in reducing environments. Due to its superior weldability, Hastelloy C22 strip is often preferred in complex manufacturing processes.
What is the C22 material grade?
C22 alloy is a nickel-chromium-molybdenum solid-solution strengthened superalloy with a nominal 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 generic designation UNS N06022.
What is Hastelloy C22 Alloy Strip?
Hastelloy C22 alloy strip is a nickel-chromium-molybdenum alloy material. Its main characteristics include resistance to both oxidizing and non-oxidizing chemical corrosion, and effective protection against pitting corrosion, crevice corrosion, and stress corrosion cracking. Its high chromium content gives it superior resistance to oxidizing media corrosion compared to the C276 alloy strip in the same series. Like other nickel alloy strips, Hastelloy C22 alloy possesses excellent ductility, superior weldability, and is easily fabricated into various industrial parts.
What is Hastelloy C276 Alloy Strip?
Hastelloy C276 strip is a nickel-chromium-molybdenum superalloy strip with added tungsten, designed to provide excellent corrosion resistance in a variety of harsh environments.
This alloy resists the formation of grain boundary precipitates in the weld heat-affected zone, making it suitable for most chemical process applications, maintaining good performance even in the welded condition.
The high chromium content gives Hastelloy C276 strip good oxidation resistance at continuous service temperatures up to 1500°F (816°C).
C276 alloy strip exhibits excellent corrosion resistance to a wide range of chemical environments. Hastelloy C276 strip is used in components that must operate under corrosive conditions, such as those in chemical processing, waste treatment, and paper manufacturing systems.
Hastelloy C22/c276 Chemical Composition
| Element | Hastelloy C22 Composition (%) | Hastelloy C276 Composition (%) |
|---|---|---|
| Nickel (Ni) | 56 | 57 |
| Chromium (Cr) | 22 | 16 |
| Molybdenum (Mo) | 13 | 16 |
| Tungsten (W) | 3 | 4.5 |
| Iron (Fe) | 3 | 5 |
| Cobalt (Co) | 2.5 | – |
| Vanadium (V) | 0.35 | – |
| Manganese (Mn) | 0.5 | – |
| Silicon (Si) | 0.08 | – |
| Carbon (C) | 0.015 | 0.01 |
| Phosphorus (P) | 0.02 | – |
| Sulfur (S) | 0.02 | 0.015 |
Hastelloy C22/c276 Alloy StripMechanical Properties
Hastelloy C22 Alloy Strip Mechanical Properties
| Product Form | Tensile Strength (ksi) | .2% Yield Strength (ksi) | Elongation % | Hardness (HRb) |
| Hastelloy C22 Alloy Strip | 112 | 53 | 62 | 89 |
Hastelloy C276 Alloy Strip Mechanical Properties
| Typical Room Temperature Tensile Properties of Annealed Alloy C276 Strip Material | |||
| Product Form | Tensile Strength (ksi) | .2% Yield Strength (ksi) | Elongation % |
| Hastelloy C276 Alloy Strip | 115.5 | 54.6 | 60 |
Hastelloy C22 and C276 Alloy Strip Applications
| Applications | Hastelloy C22 Strip | Hastelloy C276 Strip |
|---|---|---|
| Chemical Processing | Used in reactors, distillation columns, heat exchangers | Widely used in chemical processing environments, |
| including reactors and piping systems. | ||
| Pulp and Paper | Digesters, bleach plants, evaporators | Bleach plants, digesters, and other pulp and paper |
| production equipment. | ||
| Pharmaceutical | Pharmaceutical reactors and equipment | – |
| Oil and Gas | Equipment for sour gas wells, offshore platforms | Downhole and surface equipment in oil and gas production |
| environments. | ||
| Waste Treatment | Pollution control systems, scrubbers | Waste treatment plants and pollution control systems. |
| Aerospace | – | Used in aerospace applications where corrosion resistance |
| and high strength are critical. |
Gnee Steel is a professional manufacturer 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. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power, automotive, and nuclear energy industries, and we can provide customized alloy material solutions according to customer needs. For alloy material price inquiries or to request customized alloy material solutions, please feel free to contact us at ru@gneesteelgroup.com for a quote.