G40 Galvanized Steel Sheet

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.

G40 galvanized steel sheet. 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. Camden yards steel carries a wide variety of galvanized steel products including galvanized steel sheet galvanized steel coil and galvanized steel slit coil in g30 g40 g60 and g90 coating weights chem treat dry. 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.

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. 2003 this entry appended to this thread by editor in lieu of spawning a duplicative thread. The most common method of galvanizing steel is the hot dip galvanized process. Also for use in sheet metal work directly exposed to the elements.

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. Deep drawing steel and extra deep drawing steel are designations described in the astm specifications for steel sheet zinc coated galvanized or zinc iron alloy coated galvannealed by. 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. Understanding zinc based coating weights.

It has approximately 0 23 oz ft2 70 g m2 of coating on each side of the strip if the coating is equally divided. Hot dipped galvanized coatings. The galvannealed is designated with an a a40 a60. 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.

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. They both fall under astm a 653 a 653m. Hot dip galvanized steel. Hot dipped galvanized is produced to meet astm a 653 specifications general requirements for steel sheet zinc coated by the hot dip process.

And galvanized designated with a g g40 g60. G30 g40 g60 and g90.