Standard Thickness Steel Sheet

A gauge conversion chart can be used to determine the actual thickness of sheet metal in inches or millimeters.

Standard thickness steel sheet.

A1039 a1039m 20. Gague are used to specify the thickness of a metal sheet. Each galvanized sheet gauge number is 2 5 ounces per sq. The galvanized sheet gauge is based on the u s.

For example 18 gauge steel according to a gauge conversion chart is 0. Gauges are neither standard nor metric and the values are independent of those measurement systems. Standard specification for steel sheet and strip heavy thickness coils alloy drawing steel and structural steel hot rolled. Sheet metal thickness gauges for steel are based on a weight of 41 82 pounds per square foot per inch of thickness.

This is known as the manufacturers standard gage for sheet steel. For the purpose of securing uniformity the following is established as the only standard gauge for sheet and plate iron and steel in the united states of america namely. Standard specification for steel sheet hot rolled carbon commercial structural and high strength low alloy and ultra high strength produced by twin roll casting process. Sheets ordered by gauge weight or thickness are subject to standard thickness and weight tolerances.

The chart below can be used to determine the equivalent sheet thickness in inches or millimeters for a gauge number from the selected gauge size standard. Manufacturers standard gauge for sheet steel is based on an average density of 41 82 lb per square foot per inch thick equivalent to 501 84 pounds per cubic foot 8 038 7 kg m 3. For other materials such as aluminum and brass the thicknesses will be different. Gauge is defined differently for ferrous iron based and non ferrous metals e g.

Lastly a standard exists for zinc in which a higher gauge number indicates a thicker sheet. Gague ga is a length measurement unit for diameters originating in north america and belongs to the browne sharpe metering system. Gauges are used to specify the thickness of a sheet metal. Standard steel in galvanized steel in stainless steel in aluminum brass.

When working with sheet metal the term gauge is often used. Standard gauge number regardless. Thus a 10 gauge steel sheet which has a thickness of 0 1345 inches will weigh. Gauge to thickness chart click here for a printable pdf chart gauge.

In general cold rolled steel sheet can hold tighter tolerances than hot rolled when machined or otherwise fabricated and provides a better overall surface finish.