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The chart below can be used to determine the equivalent sheet thickness, in inches or millimeters, for a gauge number from the selected gauge size standard. The weight per unit area of the sheet can also be seen in pounds per square foot and kilograms per square meter.
Ga. is different from inches, there is no conversion formula. Even when the non-ferrous metal plate and the steel plate are the same Ga., the thickness is actually different. You can find the gauge to mm / inch conversion for sheet metal by the chart below.
GAUGE TO THICKNESS CHART Gauge Stainless Galvanized Sheet Steel Aluminum Fraction inches (mm) inches (mm) inches (mm) inches (mm) ... 18 0.0500 (1.27) 0.0516 (1.31) 0 ...
A gauge conversion chart can be used to determine the actual thickness of sheet metal in inches or millimeters. For example, 18 gauge steel, according to a gauge conversion chart, is 0.0478 inch or 1.214 millimeter.
Sheet Metal Gauge Chart. Sheet metal thickness is denoted by gauge, sometimes spelled gage, which indicates a standard thickness before processing. Click here for a Gauge to mm Conversion Chart. Processing may include polishing, or the applying of protective plastics which will decrease or increase a sheet’s thickness respectively.
Gauge Number: This is an inverse measure of material thickness. Lower gauge numbers indicate thicker materials, while higher numbers represent thinner sheets. For example: 14 gauge steel = 0.0747 in (1.8974 mm) 16 gauge steel = 0.0598 in (1.5189 mm) 18 gauge steel = 0.0478 in (1.2141 mm)
For instance, if a project calls for a metal sheet that's around 0.040 inches thick, one can quickly refer to the gauge conversion chart and ascertain that this thickness aligns closely with 18-gauge aluminum.