Table of contents
What is G60 galvanized coil?
What does G60 mean?
What is hot dip plating?
Application of G90 and G60 galvanized steel
What is G60 galvanized coil?
G60 grade galvanized steel is coated with molten zinc. After a continuous coating process at 600 feet per minute, excess zinc is removed from the steel panels by high-pressure air. This is to produce the required coating thickness. After cooling, the sheets are rolled into rolls, ready for manufacturing.
G60 galvanized steel coils have a total coating weight of 0.60 oz/sq. ft. on both sides. Equivalent coating thickness per side is 0.51 mils. The coating is thinner compared to batch hot-dip galvanized products. While G60 grade galvanized steel is not the best choice for exterior environments, it provides long-term advantages when used indoors and in mild environments, including appliances and plumbing systems.
What does G60 mean?
G60 is a coating grade for steel plates that have undergone a continuous hot-dip plating process. G stands for the "galvanized" or galvanized coating of the product. The number 60 refers to the thickness of the zinc around the steel plate or the thickness of the entire double-sided coating. To get the amount of galvanization on one side, you need to divide that number by two.
What is hot dip plating?
In order to galvanize steel or iron for a metal deck, you need to use zinc. During the hot-dip galvanizing process, steel panels are immersed in molten zinc at a temperature of 850 degrees Fahrenheit. During this process, the steel plate and zinc form a zinc-iron intermetallic compound layer. The zinc coating ends up on top of the sheet because it is more reactive than iron.
Application of G90 and G60 galvanized steel
Hot-dip G60 galvanized steel is the most common coating for galvanized metal, but is primarily used indoors. If you are doing an outdoor project, we highly recommend using a hot-dip G90 galvanized coating, as high humidity on the outside is more likely to cause rust if your metal deck is not adequately coated.
