Hastelloy C22 plate is a versatile and highly corrosion-resistant alloy that finds extensive use in a wide range of applications. One of the most common forms of this alloy is the C22 sheet plate, which is used in diverse industries ranging from chemical processing to power generation and beyond. This post will look at the composition, properties, and uses of the Hastelloy C22 sheet plate to help you understand its key characteristics and why it is a material of choice for so many applications.
Hastelloy C22 Sheet Plate Composition
Hastelloy C22 plate is an austenitic nickel-chromium-molybdenum-tungsten alloy with exceptionally high levels of corrosion resistance. Its composition also includes small amounts of iron, cobalt, manganese, and trace amounts of carbon and silicon. The alloy’s high chromium content resists oxidizing media, while the molybdenum and tungsten content offers excellent resistance to reducing media. The addition of nickel enhances the alloy’s corrosion resistance in acidic environments. The composition of Hastelloy C22 sheet plate makes it an outstanding choice for application in highly corrosive environments.
| Grade | C | Mn | Si | S | Co | Ni | Cr | Fe | Mo | P |
| Hastelloy C22 | 0.010 max | 0.50 max | 0.08 max | 0.02 max | 2.50 max | 50.015 min* | 20 – 22.50 | 2 – 6 | 12.50 – 14.50 | 0.02 max |
Hastelloy C22 Sheet Plate Physical Properties
Hastelloy C-22 sheet plate exhibits excellent physical properties, including resistance to stress corrosion cracking, pitting, crevice corrosion, and general corrosion. The alloy has a density of 8.69 g/cm³ and a melting point of 1399°C. The sheet plate is available in various sizes and thicknesses to suit different applications. The alloy’s physical properties offer outstanding resistance to extreme temperatures, making it useful in high-temperature and high-pressure industrial applications.
Hastelloy C22 Sheet Plate Mechanical Properties
Alloy C22 plates has impressive mechanical properties, including high tensile strength, yield strength, and elongation. Its tensile strength is 110,000 psi (758 MPa), its yield strength is 52,000 psi (355 MPa), and its elongation is 62%. The good ductility and impact strength of Hastelloy C22 sheet plate makes it a great material for use in applications that involve high load stresses.
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.69 g/cm3 | 1399 °C (2550 °F) | Psi – 1,00,000 , MPa – 690 | Psi – 45000 , MPa – 310 | 45 % |
Hastelloy C22 Sheet Plate Equivalent
| STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN |
| Hastelloy C22 | 2.4602 | N06022 | NW 6022 | – | NiCr21Mo14W |
Hastelloy C22 Sheet Plate Uses
Hastelloy C22 plate has various uses in various industries. It is used in chemical processing due to its excellent resistance to highly corrosive chemicals. This alloy is also used in the pulp and paper industry, where it is resistant to chloride-induced stress corrosion cracking. In the power generation industry, the Hastelloy C22 sheet plate is indispensable in applications where it encounters high temperatures and corrosive environments. Due to their excellent corrosion resistance properties, medical and pharmaceutical applications also use Hastelloy C22 sheet plates.
Hastelloy C22 Sheet Plate Heat Treatment
Hastelloy C22 sheet plate can be annealed in the temperature range of 2025-2100°F. After annealing, the alloy must be rapidly cooled in water or other quenching media. This step will help restore the alloy’s ductility and toughness. The desired hardness can also be achieved through cold working, which produces work-hardening, known as precipitation hardening.
Hastelloy C22 Sheet Plate Corrosion Resistance
Hastelloy Alloy C22 sheets has outstanding resistance to most forms of corrosion, including stress corrosion cracking and crevice corrosion. The alloy is resistant to harsh chemical environments such as chlorine, nitric acid, and sulfuric acid, which can rapidly erode other alloys. It is resistant to embrittlement and oxide scaling even at high temperatures, making it an ideal material for corrosive applications.
Conclusion:
Hastelloy C22 sheet plate is a highly versatile material with exceptional physical, mechanical, and corrosion resistance properties. The alloy’s composition and outstanding physical and mechanical properties make it a top choice for various industrial applications. Hastelloy C22 sheet plate is used extensively in the chemical processing, pulp and paper, power generation, and medical industries, among many others. This alloy’s excellent corrosion resistance and ability to withstand harsh environmental conditions make it the ideal material for various industrial applications.
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