What Is The Difference Between Incoloy 825 And Hastelloy C-276?
Incoloy 825 is a nickel-iron-chromium alloy containing molybdenum and copper, while Hastelloy C-276 is a nickel-molybdenum-chromium alloy containing tungsten. Hastelloy C-276 generally exhibits excellent corrosion resistance, especially in highly corrosive environments, while Incoloy 825 offers a good balance between corrosion resistance and mechanical properties, making it suitable for a wider range of applications.
What is C276 used for?
C-276 alloy is used in many industries, including chemical and petrochemical processing, oil and gas, power generation, pharmaceuticals, pulp and paper, and wastewater treatment.
What are the applications of Inconel 825 alloy?
INCOLOY 825 alloy has good resistance to general and localized corrosion under various conditions, making it widely used. Applications include chemical processing, pollution control, oil and gas recovery, acid production, pickling operations, nuclear fuel reprocessing, and radioactive waste treatment.
What is the difference between Hastelloy C22 and C276?
Hastelloy C276 has slightly higher yield strength and ultimate tensile strength than Hastelloy C22. However, Hastelloy C22 has better formability and weldability, making it the preferred choice for applications requiring complex shapes and welding.
Incoloy 825 vs Hastelloy C276 – What's the Difference?
Incoloy 825 vs Hastelloy C276 – Composition
Incoloy 825, also known as UNS N08825, is a nickel-iron-chromium alloy with the addition of molybdenum, copper, and titanium. Its high nickel content, typically between 47% and 53%, provides excellent corrosion resistance in a wide range of environments. The addition of molybdenum enhances its resistance to pitting and crevice corrosion, while the copper and titanium improve its stability and weldability.
On the other hand, Hastelloy C276 (or UNS N10276) is a nickel-molybdenum-chromium alloy with the addition of tungsten. Its higher nickel content, typically around 57%, makes it more corrosion resistant. The high molybdenum content, combined with the tungsten, gives it excellent resistance to oxidizing and reducing acids, making it ideal for handling highly corrosive media.
Incoloy 825 vs Hastelloy C276 – Properties
Both alloys exhibit excellent corrosion resistance, but their specific properties vary depending on environmental conditions. Incoloy 825 alloy exhibits good resistance to sulfuric and phosphoric acids as well as chloride-containing environments. It also has good weldability and formability and can be easily processed into complex shapes.
On the other hand, Hastelloy C276 is known for its excellent resistance to hydrochloric, sulfuric, and nitric acids, even at elevated temperatures. The alloy also exhibits excellent resistance to stress corrosion cracking and pitting, making it a top choice for handling corrosive chemicals and acids.
In terms of mechanical properties, both alloys offer high strength and good ductility. However, Hastelloy C276 has slightly higher tensile and yield strengths than Incoloy 825, making it more suitable for applications that require superior structural integrity.
Incoloy 825 vs Hastelloy C276 – Applications
The choice between Incoloy 825 and Hastelloy C276 usually depends on the specific application and the corrosive environment involved. Incoloy 825 is often used in oil and gas production, chemical processing and power generation, where it is exposed to sulfuric acid, phosphoric acid and chloride-containing media. Its good weldability and formability also make it suitable for the manufacture of complex components and structures.
Hastelloy C276, on the other hand, is widely used in the chemical processing industry, especially when dealing with highly corrosive acids such as hydrochloric acid and sulfuric acid. It is also used in pulp and paper production, pollution control and waste treatment, where its excellent corrosion resistance and strength are crucial.
Gnee Steel is a supplier of Incoloy 825 And Hastelloy C-276 Alloy in tubes, pipes, plates, strips, plates, round bars, flat bars, forged billets, hexagons, wire and extrusions. We work with steel mills to provide customers with 625 alloy, and its products meet or exceed many leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN and BS standards.
Gnee Steel stocks and sells Incoloy 825 And Hastelloy C-276 Alloy tubes, plates, strips, plates, round bars, flat bars, forged billets, hexagons, wire and extrusions. You are welcome to contact us for a quote at any time at ss@gneesteel.com
