The following sheet metal gauge size reference chart gives the weight and thickness of sheet metal given as a gauge sometimes spelled gage and indicates the standard thickness of sheet metal and wire for most materials as the gauge number increases the material thickness decreases.
Gauge sizes of sheet metal.
26 gauge 24 gauge 20 gauge 18 gauge 16 gauge 14 gauge 1 8 and 1 4.
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.
Kynar galvalume steel for metal roofing and gutters.
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.
0 7 mm 0 8mm and 1 5 mm.
0 027 or 0 032 for seamless gutters and any other thickness for custom gutters.
Kynar aluminum for metal roofing.
If the plain metal sheet is glued to a solid substrate such as steel heavy plywood or particle board then 20 gauge 0 040 or 1 00 mm stainless steel is sufficient.
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.
The charts include fractional decimal and metric dimensions for reference.
Gauge numbers continue both to thicker and thinner sections but these charts cover the most common ranges.