N10665 alloy is an improved material for Hasteloy B alloy, which is designed to solve the problems of knife edge corrosion at the weld and intergranular corrosion in the heat-affected zone. By adjusting the alloy composition and reducing or removing the content of carbon, silicon, iron and vanadium, N10665 alloy will not have intergranular corrosion in the welded state, thereby improving the performance of the material. This improvement makes N10665 alloy comparable to or even better than Hastaloy B in terms of corrosion resistance, making it an ideal choice for dealing with corrosive media such as strong acids and alkalis.
The chemical composition of N10665 alloy has a key impact on its properties and applications. Among them, the lower carbon, silicon, iron and vanadium content effectively reduces the intergranular corrosion tendency of the alloy, so that the solution treatment is not required after welding, and at the same time improves the thermal stability and reduces the risk of knife edge corrosion and intergranular corrosion. The high content of nickel and molybdenum ensures the excellent corrosion resistance of the alloy, making it widely used in chemical industry, petrochemical industry, flue gas desulfurization, pulp and papermaking, environmental protection and other industrial fields.
N10665 alloy exhibits high deformation pressure during processing, and the suitable deformation temperature is 1000-1200 degrees, while it exhibits good cold forming and plasticity during cold working. Proper solution temperature and annealing temperature can help to adjust the microstructure of the alloy and further improve its properties. Therefore, N10665 alloy is widely used in the manufacture of containers, pipelines, pumps and other equipment components resistant to HCl, sulfuric acid, phosphoric acid, HCOOH and other media.
In general, N10665 alloy meets the needs of industrial fields with high requirements for corrosion resistance of corrosive media such as strong acids and alkalis by optimizing the composition, improving thermal stability and corrosion resistance. Its composition adjustment makes it possible to eliminate the need for additional solution treatment after welding, reducing manufacturing costs and improving efficiency, so it has been widely used in many corrosive environments.