Comparing Varieties of Galvanized Sheet Metal
Sheet metal that has received a zinc coating to inhibit corrosion and shield it from environmental exposure is known as galvanized sheet metal. Iron or steel is commonly galvanized, and steel frequently undergoes this treatment in sheet form. There are multiple categories of galvanized sheet metal, and although each is steel-based, they vary in physical characteristics and in the galvanizing method employed.
By Rowan Rivera
Manufactured steel is often formed into long sheets, galvanized, and then assembled into large rolls.
Galvanized sheet metal consists of metal that has been given a zinc coating as a safeguard against rust and to shield it from environmental elements. The galvanization process is usually applied to iron or steel, and steel is frequently galvanized in sheet form. Nevertheless, multiple categories of galvanized sheet metal exist; while every category is steel-based, they vary in physical characteristics and in the method by which they were galvanized.
Commercial Galvanized Steel
The label "commercial steel" denotes standard galvanized sheet steel, like the example shown above, which can be cut and shaped at the site where it will be used or installed. It can be formed through straightforward bending and drawing techniques, and can be bent in any direction until it lies flat against itself without any need for heat application. Commercial steel finds use in a vast number of manufacturing applications and is especially common in the automobile industry.
Galvanized Forming Steel
Forming steel is a category of galvanized steel that is more ductile than commercial steel and also possesses greater tensile strength. Consequently, forming steel can be shaped or drawn (stretched) more readily while maintaining its strength without becoming brittle. Forming steel also draws into more uniform sheets; however, it costs more than plain commercial steel.
Hot-Dipped Galvanized Steel
Hot-dipped galvanized steel is a type of sheet steel that has been unrolled and passed through a galvanizing line. This manufacturing method runs the long strips of steel through a bath of molten zinc or zinc-iron alloy. The process guarantees that a uniform layer of zinc or zinc alloy coats the steel, and it permits the production of various grades of zinc coating, since the zinc or alloy can be applied in a thick layer for heavy-duty galvanization.
Electrogalvanized Steel
Electrolytic galvanized steel, also referred to as electrogalvanized steel, is produced through a distinct galvanization process. In this process, electrolytic deposition is employed to apply a thin zinc coating onto the surface of the sheet steel, in a manner comparable to the method used during powder coating. Electrolytic galvanization does not produce as thick or heavy a protective zinc layer as hot-dipping, and is therefore typically reserved for steel that will not undergo extensive outdoor exposure.
