
What is the difference between Hastelloy c22 and C276 flanges?
C22 generally exhibits excellent resistance to oxidizing environments and crevice corrosion, while C276 performs better in reducing environments and resists pitting corrosion. Both are high-performance nickel-chromium-molybdenum alloys, but their specific element ratios (especially chromium and molybdenum) lead to these differences.
What are the specifications of Hastelloy C276 flange?
The melting point of Hastelloy C276 flange is as high as 1370 degrees Celsius. Such a high melting point enables it to withstand higher operating temperatures. The minimum tensile strength of this material is 790MPa and the minimum yield strength is 355MPa.

Property Comparison of Hastelloy C22 and C276 Flanges
Corrosion resistance: The corrosion resistant alloy Hastelloy C22 flanges also resist oxidation. The surface of these flanges has excellent magnetic properties. Manufacturers produce a wide range of flanges for various applications and are used in industries such as marine, petrochemical, power, thermal, etc.
Hastelloy C276 is a high strength, hypoallergenic alloy for applications requiring corrosion resistance. It combines excellent wear resistance with excellent toughness, machinability and corrosion resistance. The alloy's low temperature strength is comparable to Hastelloy C1.
Machinability: While Hastelloy C22 can be machined, the process is not as simple as you might think. Hastelloy C22 is a hard alloy that can be machined into a variety of shapes due to its cobalt-chromium properties. However, Hastelloy C22 will wear much faster than using a steel drill on any other metal. The hardness of Hastelloy C22 makes the drilling process difficult and time-consuming.
Hastelloy C276 can be machined, but requires the use of suitable lubricants and safety gear. Hastelloy C276 can be machined. Hastelloy C276 plates, bars and rings can be machined using conventional tools and equipment if you have the right lubricant. However, due to the high residual stresses in Hastelloy C276 bars and forgings, machining these materials requires specific techniques and equipment.
Gnee Steel is a supplier of Hastelloy c22 and C276 flanges in tubes, pipes, plates, strips, plates, round bars, flat bars, forged stock, hexagons, wire and extrusions. We work with steel mills to provide our customers with 625 alloy, which meets or exceeds many leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN and BS standards.
Gnee Steel stocks and sells Hastelloy c22 and C276 flanges tubes, pipes, plates, strips, plates, round bars, flat bars, forged stock, hexagons, wire and extrusions. You are welcome to contact us for a quote at any time at ss@gneesteel.com





