What advantages does ENHP have over hard chrome?
Unlike the crystalline structure of hard chrome, ENHP is amorphous and thus prevents migration of solution to the substrate surface. As such, ENHP is an excellent coating for corrosive environments, especially acidic. ENHP has greater ultimate strength than chrome and superior ductility making it much less susceptible to fracture in abusive environments. Due to the high hardness of chrome, galling (the wear of a mated surface) often occurs; with ENHP, however, the part can be heat treated to render a hardness within 150 HV100 of the mated surface, thus minimizing galling. Apart from its own properties, ENHP has been enhanced for particular applications through proven techniques which include duplex coatings, baking, alloying, and composite coatings.
