The thickness of the coating applied through electro galvanization is precise. Difference between Electrogalvanized Steel and Hot Dip Galvanized Steel. Galvanization is also known as galvanization is considered to be the technique to apply protective zinc coating for the iron or steel, for preventing rusting. Pre-galvanization is also known as mill galvanized, due to the fact that the steel sheet is rolled through molten zinc. The most commonly used electrogalvanized cold rolled steel is SECC steel. The most common method is hot-dip galvanising.This is when metal parts are fully submerged in a bath of molten zinc. The coating thickness entirely depends upon the dipping duration. Without knowing the specific brand and model of nail, it is impossible to determine the difference. giving it an all-round corrosion protection. HDG steel products are prepared by plunging a steel product into a vat of molten zinc. Mechanical Galvanizing vs. Piet Rautenbach Str, 0200 Rosslyn, Pretoria The rust-treated steel is placed in a zinc bath at about 500 ° C to allow the zinc layer to adhere to the surface of the steel structure. The end product can be used outdoors in all different weather conditions. Care is to be taken to the fullest extent in several services. Zinc electroplating has a definite advantage in appearance and for close fitting parts, but hot dipping will give much better corrosion resistance because the zinc coating will be about five times thicker. The key difference between galvanized and hot dip galvanized is that most galvanized materials have a smooth and sharp finishing, whereas hot sip galvanized structures have a rough finishing. For electro-galvanization, coating thickness generally is about 10 to 12 Âµm. Steel materials to be hot-dip galvanized or electro-deposit plated go through a three step process: surface preparation, galvanizing or plating, and inspection. Otherwise, it will be just merely waste of precious time and money. Please note that the galvanizing does not change the mechanical properties of steel. But, the cost is said to increase proportionately with higher coating thickness. Image Credit: Visage/Stockbyte/Getty Images When metal goes unprotected, the effects can be disastrous. Hot dip galvanization produces on steel surface Fe-Zn alloy layer, leaving behind pure zinc coating on outer surface. The coating formed by the zinc protects the steel from corrosion and in cases where the coating gets scratched, the steel is still protected. Hot-dip galvanized coating is thicker, generally 30-60 microns. Either electroplating or hot dipping can be used to apply the coating of zinc to steel (and there are other methods as well). This process includes the submergence of iron or steel in a molten zinc bath. The thickness of the zinc coating is influenced by a number of factors, including the surface of the steel, the time the steel is dipped in the bath, the composition of the steel as well as the steel's size and thickness. Hot Dip Galvanized, Pre-Galvanized and Electro-Galvanized Steel The process where steel is coated with protective corrosion resistant zinc is known as galvanization. The coating formed by the zinc protects the steel from corrosion and in cases where the coating gets scratched, the steel is still protected. Zinc coated steel sheets are produced on modern continuous hot dip or electro-galvanizing lines, and the finished product is excellent in appearance, Comparison of Metalizing vs Hot Dip Galvanizing Background Hot dip galvanizing (below) produces a zinc coating on iron and steel products by immersion of the material in a bath of molten zinc metal. 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