How To Measure Sheet Metal Gauge Size

The table below provides conversion to inches.

How to measure sheet metal gauge size. Gauge to thickness chart. A gauge conversion chart can be used to determine the actual thickness of sheet metal in inches or millimeters. The gauge number 18 holds no relevance to the actual measurements. 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.

It should be noted that aluminum is usually classified by inches rather than gauge as there is no official gauge standard for aluminum. Use a tape measure to find the thickness of your sheet metal piece. The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material. If your measurement was 55.

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. Metal sheet thickness is measured in gauge. Use the millimeter hash marks to find the most accurate measurement. Us sheet metal screw diameters.

Multiply the number of millimeters by 0 03937 to convert to inches. Originally used in the fields of medicine and jewellery the larger the. Gague are used to specify the thickness of a metal sheet. Gague ga is a length measurement unit for diameters originating in north america and belongs to the browne sharpe metering system.

Galvanized steel sheet metal measuring 30 gauges equals 0 0157 inch but the same gauge standard steel sheet metal measures 0 0120 inch and 30 gauge stainless steel measures 0 0125 inch. How to measure sheet metal gauge thickness. 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. For example 18 gauge steel according to a gauge conversion chart is 0 0478 inch or 1 214 millimeter.

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 29 0 0141 0 36 0 0172 0 44 0 0135 0 34 0 0113 0 29 28 1 64 0 0156 0 41 0 0187 0 47 0 0149 0 38 0 0126 0 32 27 0 0172 0 43 0 0202 0 51 0 0164 0 42 0 0142 0 36 26 0 0187 0 48 0 0217 0 55 0 0179 0 45 0 0159 40 25 0 0219 0 56 0 0247 0 63 0 0209. Print this page. When working with sheet metal the term gauge is often used. Decimal nearest fractional 4 112.