G40 Galvanized Steel Sheet

40 vs 60 now in reference to the number following the a or g refers to the amount of zinc represented in ounces per square foot or sometimes grams per square meter total both sides.

G40 galvanized steel sheet.

The number call out for both is the weight of the coating. G30 g40 g60 and g90. The most commonly used coated sheet steel products in the metal building industry today are hot dip galvanized hdg 55 aluminum zinc alloy coated galvalume 1 coated steel hot dip galvannealed hdga zinc 5 aluminum alloy coated galfan 2 coated steel and type 2 aluminum coated steel. They both fall under astm a 653 a 653m.

2003 this entry appended to this thread by editor in lieu of spawning a duplicative thread. G60 or a60 is 0 60 ounces per square foot resulting in an average thickness of about 0 0005 inches. This issue is further confused by the adoption of unclear language in the trade. Evaluation of g60 vs g90 galvanizing with respect to cold formed metal framing studs in exterior wall construction and interior metal stud or other architectural components.

G40 0 40 122 g60 0 60 183 g90 0 90 275 g115 1 15 351 g140 1 40 427 g165 1 65 504 g185 1 85 565. Hot dip galvanized steel. And galvanized designated with a g g40 g60. Also for use in sheet metal work directly exposed to the elements.

Hot dipped galvanized is produced to meet astm a 653 specifications general requirements for steel sheet zinc coated by the hot dip process. In closer review of the tolerances allowed by astm the actual coating weight can be as low as 36 g m2 0 12 oz sf on a single side. A wide variety of g40 galvanized steel sheet options are available to you such as hot rolled. You can also choose from bending cutting and decoiling g40 galvanized steel sheet as well as from astm g40 galvanized steel sheet and whether g40 galvanized steel sheet is container plate ship plate or boiler plate.

It has approximately 0 23 oz ft2 70 g m2 of coating on each side of the strip if the coating is equally divided. Understanding zinc based coating weights. The inch pound term g40 a designator used only for hot dip galvanized sheet is defined by a 653 a 653m as total coating weight both sides. Hot dipped galvanized coatings.

The galvannealed is designated with an a a40 a60. For instance the typical g40 metallic coated substrate that meets astm a653 standard for galvanized sheet steel are assumed to have a 120 g m2 0 40 oz sf total coating weight for both sides of the sheet.