The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material.
Steel sheet metal gauge to mm.
Because of the varying thicknesses a gauge chart should be used to ensure the metal meets the required dimensions.
When working with sheet metal the term gauge is often used.
Gague are used to specify the thickness of a metal sheet.
Commonly used steel sheet metal ranges from 30 gauge to about 7 gauge.
In the us the thickness of sheet metal is commonly specified by a traditional non linear measure known as its gauge.
Convert gauges bwg usg to inches and millimeters.
For example in one gauge system 18 gauge steel measures 0 0478 inches thick but 18 gauge aluminum is 0 0403 inches thick.
For a more comprehensive gauge chart you can check out our sheet metal gauge chart here.
Sheet metal gauge size chart gauge or gage sizes are numbers that indicate the thickness of a piece of sheet metal with a higher number referring to a thinner sheet.
Converting sheet metal gauge numbers to millimeters is as simple as following the chart below.
The larger the gauge number the thinner the metal.
This chart covers the common and uncommon sheet metal sizes for steel aluminum and galvanized steel.
In most of the world sheet metal thickness is consistently specified in millimeters.