Sheet metal thickness gauges for steel are based on a weight of 41 82 pounds per square foot per inch of thickness.
Imperial sheet metal thickness.
As the gauge number increases the material thickness decreases.
Corresponds to the standard steel thickness of 0 0329 inches 0 84mm.
The table below provides conversion to inches.
For other materials such as aluminum and brass the thicknesses will be different.
The story of gauge.
Imperial equivalent in mm.
For example 18 gauge steel according to a gauge conversion chart is 0.
Gauges are used to specify the thickness of a sheet metal.
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Standard metric sheet in mm.
Gauges are neither standard nor metric and the values are independent of those measurement systems.
Gauge to thickness chart gauge stainless galvanized sheet steel aluminum fraction inches mm inches mm inches mm inches mm 30 0 0125 0 33 0 0157 0 40 0 0120 0 30 0 0100 0 25.
A gauge conversion chart can be used to determine the actual thickness of sheet metal in inches or millimeters.
The chart below shows the imperial standard sheet gauge definition with its metric equivalent and today s commercially available ferrous mild steel zintec galvanised steel stainless steel alloys and non ferrous aluminium alloys brass copper sheet.
Metal sheet thickness is measured in gauge.
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The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material.
This is known as the manufacturers standard gage for sheet steel.
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.
Wire conductor sizes are also measured in gauge and are equivalent to the non ferrous thicknesses listed below but we have an article specific to wire gauge.