2Cr21Ni12N use

0 Introduction About Hastelloy C276 The Hastelloy C276 is a nickel-molybdenum-chromium-based super alloy which is mainly used in applications with highly corrosive environments. It complies with various standards such as ASTM, ASME and also satisfies various parameters such as resistance to high temperature, excellent corrosion resistance and superior weldability. 1 Chemical Composition of Hastelloy C276 Hastelloy C276 contains many elements such as nickel, molybdenum, chromium, tungsten, manganese, cobalt and iron. The chemical composition of the Hastelloy C276 is as follows: • Nickel: 56.0 - 61.0% • Molybdenum: 15.5 – 17.5% • Chromium: 15.5 – 17.5% • Tungsten: 3.0 – 4.5% • Manganese: ≤ 1.0% • Cobalt: 1.0 – 3.0% • Iron: ≤ 2.5 % 2 Physical Properties of Hastelloy C276 The physical properties of the Hastelloy C276 are as follows: • Density: 8.47 g/cm3 • Melting Point: 1325 ℃ • Young’s modulus: <384 GPa • Poisson’s ratio: 0.28 • Thermal Expansion Coefficient: 1.6 x 10-6m/m0C • Melting Range: 1279-1317℃ 3 Characteristics of Hastelloy C276 Hastelloy C276 exhibits several properties that make it a desirable alloy. It has extremely good resistance to both organic and inorganic corrosion. The alloy also shows excellent resistance to pitting and stress corrosion cracking in a chloride-rich environment. Moreover, the alloy’s resistance to susceptible cracking makes it a great choice for welded components. Furthermore, the alloy has an impressive resistance to stress corrosion cracking in both acids and bases making it ideal for applications in the petrochemical, marine and nuclear industries. Also,the alloy can be used in temperatures that range from cryogenic to more than 1000°F. 4 Applications of Hastelloy C276 Hastelloy C276 alloy is used in a variety of applications and environments. The alloy is an excellent choice for components used in industries such as pharmaceutical, chemical processing, pulp, and paper production and energy generation. Also, the alloy is often used for pressure vessels, heat exchangers, and columns. Moreover, it can also be used in production of valve trim, pump parts and turbine components. Other applications include components used in the marine and waste treatment industries, as well as in coal gasification systems. 5 Advantages of Hastelloy C276 The major advantages of Hastelloy C276 include its outstanding resistance to corrosion and stress corrosion cracking. Also, the alloy is highly weldable and can be easily cold worked and formed. Moreover, Hastelloy C276 is available in a variety of shapes, sizes and forms which make it suitable for a number of applications. Additionally, the alloy has significantly better corrosion resistance to most acids as compared to other alloys such as stainless steel. 6 Conclusion Overall, Hastelloy C276 is an ideal alloy for various applications due to its excellent corrosion and stress corrosion cracking resistance. Furthermore, the alloy is highly weldable and can be easily fabricated into many shapes sizes and forms. Lastly, this alloy is a reliable choice for components used in highly corrosive environments.