Typically the even number gauges are used more frequently.
Steel sheet gauge to mm.
0 0394 inch 20 gauge.
8 gauge 4 115 mm.
Because of the varying thicknesses a gauge chart should be used to ensure the metal meets the required dimensions.
The thickness of sheet metals is specified by gauge.
This chart covers the common and uncommon sheet metal sizes for steel aluminum and galvanized steel.
The table below shows the actual thickness of sheet steel in millimetres and inches compared to gauge size.
For example in one gauge system 18 gauge steel measures 0 0478 inches thick but 18 gauge aluminum is 0 0403 inches thick.
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.
The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material.
Converting sheet metal gauge numbers to millimeters is as simple as following the chart below.
0 0315 inch 22 gauge.
8 gauge 4 176 mm stainless steel.
8 gauge 4 191 mm aluminum brass copper.
For different materials of steel the same gauge will also correspond to different mm.
These dimensions vary slightly between different materials such as stainless steel and aluminium but should be accurate enough for most everyday purposes.