Copied! Sheet Metal Gauge Chart Complete steel gauge thickness chart and stainless steel gauge chart with aluminum and galvanized references. Gauge numbers are counterintuitive — a higher gauge means thinner material. This chart gives you the exact thickness in both inches and millimeters. A sheet metal gauge chart is a reference table that converts gauge numbers to exact thickness measurements in inches or millimeters. The gauge system is an industry-standard method for specifying sheet metal thickness, where a higher gauge number indicates thinner material. Different materials — steel, stainless steel,...
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