Uniform corrosion is known for its uniform corrosion rate all over the surface. This happens due to anode area and cathode area occupying the equal surface area. Because of uniform corrosion rate all over the surface it forms rust of uniform thickness on entire metal surface . Crevice corrosion is known for its localized attack on metal substrate. Crevice corrosion takes place as crevice get forms at specific locations on a metal surface. Crevice corrosion is more prominent when metal establishes contact with either metal or non-metal . Pitting is one of the most catastrophic types of metal damage. This is because of its poor traceability even after large deterioration of metal . Difference between the chemical compositions of metal makes grain boundaries more acidic which forms inter-granular corrosion . Stress corrosion is a combined action of mechanical stress present on metal and corrosive environment around the metal despite the fact that neither factor has a corrosive effect on the metal alone . When two metals of different electronegativity come in contact each other, it establishes the electrochemical cell. In formed electro-chemical cell one of the metal acts as anode while other become cathode depending upon the electronegativity. The metal which is more reactive gets corroded fast while other metals get protected . This is also called bimetallic corrosion. Erosion type of corrosion occurs due to mechanical movement of corrosive fluid through the metal. This happens when mechanical friction between metal and particles of the corrosive fluids takes place .Waterline corrosion occurred in metallic water storage tanks when filled partially. Area below the water surface acts as anode because it has exposure to very little oxygen while area above the water level has ample of oxygen and thus acts as cathode and thus corrosion occurs just below the water surface called as water line corrosion . Antifouling coating is the best choice of coating formulators and scientist to avoid water line corrosion.