When venturing into high-performance alloys, Inconel C-276 stands out for its exceptional resistance to severe environments. Also known as Hastelloy C276, with the UNS Number N10276 and WNR Number 2.4819, this nickel-molybdenum-chromium alloy is renowned for its corrosion resistance and versatility. Here, we compile essential FAQs for potential buyers, ensuring you make an informed decision when purchasing Inconel C-276.
What Is Inconel C-276, and why is it unique?
Inconel C-276 is a nickel-molybdenum-chromium superalloy with an addition of tungsten designed to have excellent corrosion resistance in a wide range of severe environments. The high molybdenum content makes the alloy exceptionally resistant to pitting and crevice corrosion, while the chromium content provides resistance to oxidising environments. The unique composition of Inconel C-276 allows it to withstand environments that typically lead to most other materials’ failure.
What standards does Inconel C-276 comply with?
Inconel C-276 meets various ASTM standards, including B564 (forgings), B574 (rods, bars, and wires), B575 (plates, sheets, and strips), B619 (welded pipe), B622 (seamless tube and pipe), B626 (welded tube), B366 (fittings), B462 (forgings), and B775 (welded pipe). These standards ensure the alloy’s reliability and performance across different applications and industries.
What are the primary applications of Inconel C-276?
Due to its robustness in aggressive environments, Inconel C-276 serves a broad spectrum of applications, particularly where corrosion resistance is crucial. Key industries include:
Chemical processing
Petrochemicals and refining
Flue gas desulfurisation
Pulp and paper production
Industrial and municipal waste treatment
Pharmaceutical and food processing equipment
How does Inconel C-276 perform in corrosive environments?
Inconel C-276 excels in both oxidising and reducing environments, offering unparalleled protection against pitting, stress corrosion cracking, and crevice corrosion. It’s particularly effective against corrosives like sulfuric, hydrochloric, acetic, and phosphoric acids. Moreover, it’s one of the few materials capable of resisting the corrosive effects of wet chlorine gas, hypochlorite, and chlorine dioxide solutions.
Can Inconel C-276 be welded?
Yes, Inconel C-276 can be welded using common welding techniques, including gas tungsten arc welding (GTAW/TIG), gas metal arc welding (GMAW/MIG), shielded metal arc welding (SMAW), and submerged arc welding (SAW). It’s important to use matching filler metals to ensure the weld area’s corrosion resistance matches the base metal’s.
What considerations should be made when fabricating with Inconel C-276?
While Inconel C-276 is ductile and can be formed using traditional techniques, it’s essential to consider its work-hardening rate. Careful planning of the sequence of operations can minimise work hardening and simplify fabrication. Also, due to its high nickel content, the alloy’s cutting and machining require appropriate tools, speeds, and feeds to avoid work hardening.
How does Inconel C-276 compare to other corrosion-resistant alloys?
Inconel C-276 is often compared to high-performance alloys like Inconel 625, Monel 400, and Duplex 2205. Its superior corrosion resistance in a broader range of environments, particularly against chlorides and oxidising and reducing media, sets it apart. However, the specific choice between these alloys depends on the detailed conditions of the application, including temperature, chemical exposure, and mechanical requirements.
What are the availability and forms of Inconel C-276 products?
Inconel C-276 is available in various forms, including plate, sheet, bar, wire, pipe, tube, and fittings, to accommodate diverse industrial applications. This availability ensures that components can be engineered to exact specifications, providing flexibility in design and application.
How do you ensure the quality of Inconel C-276 products?
When purchasing Inconel C-276, sourcing from reputable suppliers who adhere to strict quality standards is crucial. Ensure the products comply with the relevant ASTM standards and request material test certificates (MTC) that verify the alloy’s composition, mechanical properties, and adherence to specifications.
Where can I find more information on Inconel C-276?
For detailed information on Inconel C-276, including its properties, applications, and availability, visit Corrotherm International’s dedicated page at https://www.corrotherm.co.uk/grades/inconel-c-276 .