Galvanized Sheet Metal Standard Thickness

A gauge conversion chart can be used to determine the actual thickness of sheet metal in inches or millimeters.

Galvanized sheet metal standard thickness.

Garfield avenue los angeles ca 90040. And astma653 a653m 94 standard specification for sheet steel zinc coat galvanized or zinc iron alloy coated galvanized by the hot dip process. G90 is not a galvanizing specification. The two most common metals used for ductwork are aluminum and galvanized steel and the requirements for both are listed in the international mechanical.

Astm a123 standard specification of zinc hot dip galvanized coatings on iron and steel products refers to products fabricated and then hot dip galvanized. Gauge to thickness chart. The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material. 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 0 53 0 0179 0 46 24 0.

For example 18 gauge steel according to a gauge conversion chart is 0 0478 inch or 1 214 millimeter. For other materials such as aluminum and brass the thicknesses will be different. It is a coating thickness designation in the galvanizing specification astm a653. The gauge number 18 holds no relevance to the actual measurements.

This is known as the manufacturers standard gage for sheet steel. Sheet metal thickness gauges for steel are based on a weight of 41 82 pounds per square foot per inch of thickness. Sheet metal gauge thickness chart 2019 10 24t01 36 33 00 00 when working with sheet metal the term gauge is often used. This specification is for hot dip galvanizing steel sheet using the continuous high speed galvanizing process.

These measurements are based on astm a924 924m 94 standard specification for general requirements for sheet steel metallic coated by the hot dip process formerly astma525. The standard thickness increases for larger dimensions of piping made from sheet metal so it can withstand the stresses of greater length and diameter without buckling under its own weight.