By using Heef 25 (the most advanced hard chrome available on the market) with a hardness of 67 to 72 Rockwell C as compared to OEM chrome plating hardness of 44 to 51 Rockwell C.   When using hard chrome plated parts in corrosive environments corrosion starts by following the pathway of micro cracks inherent in chrome. These chracks represent a path of least resistance and allows the corrosive material to attack the base metal of the rotor. This corrosion will eventually cause the chrome to lift up and as a result limits the expected life of your chromed parts.   By treating the base metal with "MooreCor" process before hard chrome plating with HEEF 25 chrome, your parts will achieve the extended working life you are looking for in corrosive environments.