G90 Galvanized Sheet Metal Weight

Cold and hot rolled steel.

G90 galvanized sheet metal weight.

Taking g90 as an example the coating weight on one square foot of sheet total both sides of the sheet shall have a triple spot test tst average minimum of 0 90 ounces. 16 gauge 14 gauge 1 8 and 1 4. When exposed to the atmosphere pure zinc reacts with oxygen to form zinc oxide which further reacts with carbon dioxide to form zinc carbonate a dull grey fairly strong material that stops further. The galvanized sheet coating parameters relate to the total for both sides of the sheet.

Hot dip galvanizing is the process of coating iron or steel with a thin zinc layer by passing the steel through a molten bath of zinc at a temperature of around 860 f 460 c. The standard product is class g90 which has 0 9 oz ft 2 of sheet total both sides or about 0 76 mils 18 µm thickness per side. Batch galvanizing coating specifications are given in weight per surface area. Designation system is given in terms such as g60 g90 etc.

If equally applied to both sides of the sheet there would be a minimum of 0 45 ounces on each surface. Sheet steel galvanized steel stainless steel aluminum strip tubing inches gauge decimal inches weight lb ft 2 gauge decimal inches weight lb ft 2 gauge decimal inches weight lb ft 2 gauge decimal inches weight lb ft 2 gauge decimal inches 44. 48 oz 24 oz 20 oz and 16 oz. These numbers refer to the weight mass in si units of zinc on the surface of the steel sheet in inch pound english or imperial units of measurement.

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