How Thick Is 20 Gauge Steel?

By Staff WriterLast Updated December 05, 2023

Standard 20 gauge steel is .0359 inches thick. Galvanized 20 gauge steel is thicker at .0396 inches and 20 gauge aluminum is thinner at .0320 inches thick. The thickness of a piece of steel is also indicative of its maximum bending capacity.

The higher the gauge of a piece of sheet metal, the lower its thickness. This means that 3-gauge metal is thicker than 20-gauge metal.

Sheet metal is used for a variety of purposes, one of which is brakes on a vehicle. Sheet metal may also be used in construction, such as on the roof of a building. There are also instances of using sheet metal in interior design; it can be used to cover floors or walls.