Guide to Material Thicknesses – Stainless Steel, Aluminum, Copper, & Brass
What are sheet metal gauges?
Gauges are used to specify the thickness of a sheet of metal. These units are neither standard of metric and are completely independent of those typical measurement systems. Keeping a gauge conversion chart nearby is an easy way to determine the actual thickness of a sheet of metal in inches or millimeters. For example, 14 gauge stainless-steel is .07812 inches thick. The gauge number 14 holds no relevance to the actual measurements.
It is important to know that the gauge thicknesses also vary depending on the type of sheet metal being referenced. Take for instance 12-gauge thickness across the material types listed below; stainless steel is 0.105″ thick, aluminum is 0.080″, copper is 0.108″, and brass is 0.081″.
You can use any number of calipers to measure the thickness of materials or a handy thickness gauge like one pictured below.
Thickness Guage Tools
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