Originally used in the fields of medicine and jewellery the larger the.
Steel sheet thickness.
This is known as the manufacturers standard gage for sheet steel.
For example 18 gauge steel according to a gauge conversion chart is 0 0478 inch or 1 214 millimeter.
Number of gauge approximate thickness in fractions of an inch.
Gague are used to specify the thickness of a metal sheet.
Commonly used steel sheet metal ranges from 30 gauge to about 7 gauge.
A gauge conversion chart can be used to determine the actual thickness of sheet metal in inches or millimeters.
The larger the gauge number the thinner the metal.
For other materials such as aluminum and brass the thicknesses will be different.
The gauge number 18 holds no relevance to the actual measurements.
In most of the world sheet metal thickness is consistently specified in millimeters.
Sheet metal thickness gauges for steel are based on a weight of 41 82 pounds per square foot per inch of thickness.
Gauge to thickness chart click here for a printable pdf chart gauge.
For the purpose of securing uniformity the following is established as the only standard gauge for sheet and plate iron and steel in the united states of america namely.