Zinc Coated Galvanized Steel Sheet

This 26 gauge zinc plated sheet metal can be altered in shape and cut with proper equipment.

Zinc coated galvanized steel sheet.

Wheeling nippon steel s galvanized coating is one of the most effective and economical methods of protecting bare steel from a corrosive environment. The zinc coating not only serves as a barrier between the steel and the environment it will sacrifice itself to protect the underlying steel sheet. The galvanized coating is applied over steel to protect that steel not the other non coated steel that the galvanized steel happens to be in contact with. 1 1 this specification covers steel sheet zinc coated galvanized or zinc iron alloy coated galvannealed by the hot dip process in coils and cut lengths.

Hot dip galvanizing results in a metallurgical bond between zinc and steel. Electrogalvanized sheet is manufactured by electroplating a pure zinc coating on one or two sides of carbon steel sheet. If you ve ever tried to paint a galvanized metal surface you know that it doesn t work all that well. The layer of zinc left on the metal after the galvanization process is meant to reduce corrosion but it also rejects paint eventually causing it to peel or shed.

This continuous electrolytic coating process can be used to apply the coating onto the surface of the steel sheet with an exceptionally uniform thickness. The zinc coated sheet receives an in line heat treatment immediately as the strip exits the molten zinc bath to convert the entire coating layer to a zinc iron alloy by diffusion of iron from the sheet into the zinc coating. It is the process of coating iron steel or aluminium with a thin zinc layer by passing the metal through a molten bath of zinc at a temperature of around 860 f 460 c. The continuous hot dip galvanizing process offers a wide protection range from z100 to z600 in addition to a tight bond between the coating and the steel.

Zinc coating z produced on both sides by hot dip galvanizing extends the service life of the end product by protecting the steel from corrosion. Astm a653 a 653m standard specifications for steel sheet zinc coated galvanized or zinc iron alloy coated galvannealed by the hot dip process. In these cases the zinc serves as an anode and provides cathodic protection to the steel. The finished product can be used up to 200 o c above that the zinc can peel.

Types of zinc coatings galvanized steel doors and frames are fabricated from carbon steel sheet that has been coated with zinc on two sides by the continuous hot dip process. There are some instances when zinc is electrically connected to dissimilar metals on purpose such as on boats or on pipelines. Galvannealed steel doors and frames are fabricated from carbon steel sheet that has been coated by the continuous hot dip process and further treated to convert the zinc coating into a zinc iron alloy. 1 2 the product is produced in various zinc or zinc iron alloy coating weights masses or coating designations as shown in table 1 and in table s2 1.

Commonly used for gutter repair ductwork patching and flashing. The truth is that paint will not adhere to galvanized steel.