Corrosion-resistant​‍​‌‍​‍‌ alloys have been necessary to ensure long-term reliability in high-performance industrial environments. Among them, the Hastelloy C22 Plate used in chemical process plants in the United States has been able to provide excellent performance against both oxidizing and reducing media. It is made in different thicknesses from 2 mm to 40 mm and the nickel-chromium-molybdenum alloy plate is highly resistant to pitting, crevice corrosion, and stress corrosion cracking. The engineers often use this material in heat exchangers, pressure vessels, and reactor components, where the temperature and chemical exposure require the strength of the material beyond that of conventional stainless steels.

The metallurgical stability of the material enables it to retain its mechanical strength even after welding or exposure to aggressive oxidizing acids. Fabrication of such alloys involves the use of controlled heat and precision machining so that the grain structure and surface finish are uniform. Process engineers usually check the compatibility of Hastelloy grades with other austenitic and duplex stainless steels, especially in multi-material assemblies that are designed for offshore, pharmaceutical, or waste treatment facilities. Likewise, the specification of the tube is very important for the production of seamless tubing for critical applications.

The tubes have to meet very strict dimensional and surface requirements as specified in the ASTM A269 tube specification, which is mostly referred to in petrochemical and instrumentation systems in Germany. This specification is about the nominal wall thickness, annealing treatment, and surface finish of austenitic stainless steels and it makes it possible for the fluid to be transported in high-pressure circuits in a precise way. The combination of the corrosion resistance of Hastelloy and the dimensional stability of the tubing that is compliant with ASTM A269 is what guarantees its performance in different engineering sectors and last but not least, international project ​‍​‌‍​‍‌standards.