BorFusion® is Giant Coatings’ proprietary boronizing process – during the BorFusion® process, boron molecules react with iron in the steel and create an extremely hard surface layer known as Iron Boride (Fe2B).

The diffused layer of Iron Boride penetrates the metal substrate in a tooth-like fashion creating an extremely tight bond that cannot flake, spall or chip away. Approximately 80% of the hardened layer will grow into the steel, leaving a mere 20% of surface growth. Depending on the type of material subject to the BorFusion® process, the surface growth will vary – see the chart for the approximate case layer thicknesses for various materials. Keep in mind the chart represents case thickness, not surface growth.