HASTELLOY COATING HEAT EXCHANGER

Hastelloy coating is a thermal spray coating process used to improve or restore a component’s surface properties or dimensions, thus extending equipment life by significantly increasing erosion and wear resistance, and corrosion protection. Molten or semi-molten materials are sprayed onto the surface by means of the high temperature, high-velocity gas stream, producing a dense spray coating which can be ground to a very high surface finish. The utilization of the Hastelloy coating technique allows the application of coating materials such as metals, alloys, and ceramics to produce a coating of exceptional hardness, outstanding adhesion to the substrate material and providing substantial wear resistance and corrosion protection.

High velocity deposited Hastelloy coatings provide high resistance to uniform corrosion attack, outstanding localized corrosion resistance and excellent stress corrosion cracking resistance.Hastelloy C nickel-chromium-molybdenum alloys combine resistance to oxidizing and non-oxidizing environments.Like many other nickel alloys, Hastelloy coatings are ductile, easy to spray, and possesses exceptional resistance to stress corrosion cracking in chloride-bearing solutions (a form of degradation to which the austenitic stainless steels are prone).