The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material.
Awg sheet metal thickness.
For 18 ga crs the weight is 2 0 pounds per square foot and for 20 ga crs the weight is 1 5 pounds per square foot.
The manufacturers standard gage provides the thicknesses for standard steel galvanized steel and stainless steel.
Thus a 10 gauge steel sheet which has a thickness of 0 1345 inches will weigh 41 82 0 1345 5 625 pounds per square foot.
The gauge number 18 holds no relevance to the actual measurements.
A gauge conversion chart can be used to determine the actual thickness of sheet metal in inches or millimeters.
Commonly used metals for manufacturing at our shop are.
For example 18 gauge steel according to a gauge conversion chart is 0 0478 inch or 1 214 millimeter.
Aluminum 0 025 0 032 0 040 0 050 0 063 0 080 1 8 0 125 and 1 4 0 25.
The brown and sharpe gage also known as the american wire gage awg is used for most non ferrous metals such as aluminum and brass.
There are several different gauge systems used today with specific gauge designations used for specific metal types.
This is known as the manufacturers standard gage for sheet steel.
For other materials such as aluminum and brass the thicknesses will be different.
16 ga crs is 2 5 pounds per square foot.
Cold and hot rolled steel 16 gauge 14 gauge 1 8 and 1 4.
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 sheet metal products.
Sheet metal manufacturing and services 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.
Below you will find a chart for metal thicknesses and weights.
In addition the same gauge number for different materials presents different thickness for example 37 gauge stainless steel is 0 0066 inches thick while 37 gauge aluminum is 0 0045 inches thick.