Hot-rolled steel products can run from in thick to 18-gauge (0.0478 in) and still be considered as sheet, although many authorities consider any sheet-metal thickness of 0.250 in and greater as plate.

Metal sheet is metal or alloy stock supplied or available in the form of sheet or foil. It has a thickness between 0.006" and 0.250", and a width of 24" (609.6 mm) or more. Sheet metal can be designed ...

known as gauges. An easy way to remember sheet metal thickness is that the higher the gauge number, the thinner it is. The ...

When buying sheet metal, the SWG size gives the thickness measurement, but the length and width measurements are also needed. Bulk buying metal, as with most items, can save money.