A gauge conversion chart can be used to determine the actual thickness of sheet metal in inches or millimeters.
Ga size sheet metal.
Originally used in the fields of medicine and jewellery the larger the number the smaller the diameter and now it is also used to indicate the thickness.
Please note that astm states in specification astm a480 10a the use of gage number is discouraged as being an archaic term of limited usefulness not having general agreement on meaning.
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 thickness of sheet metal is commonly specified by a traditional non linear measure known as its gauge.
Metal gauges below you ll find the info you need with our sheet steel stainless steel and aluminum sheet metal charts.
The gauge number 18 holds no relevance to the actual measurements.
The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material.
For example 18 gauge steel according to a gauge conversion chart is 0 0478 inch or 1 214 millimeter.
The story of gauge.
The corresponding galvanized steel thickness is 0 0366 inches 0 93mm and the corresponding aluminum thickness is 0 028 inches 0 71mm.
Corresponds to the standard steel thickness of 0 0329 inches 0 84mm.
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Gague are used to specify the thickness of a metal sheet.