The Sheet Metal Gage helps you to accurately determine the thickness of uncoated sheet metal, plate iron and steel. The Gage measures U.S. Standard sheet metal sizes from 0 to 36" This heavy duty gage is made from hardened and tempered steel, and is stamped with sheet metal sizes on the front and their decimal equivalents on the back. Understanding the nuances of tolerances makes life easier for engineers. ... Sheet-Metal Allowance: Determining How Much Sheet Metal Is Needed to Make Curved Parts. Nov 30, 2015. 6061 Aluminum Plate Tolerance Chart Flatness Size Thickness LBS/ Sq. Ft. Estimate Lbs/Plate Estimate Plates Per Skid Exact. Title: Aluminum Plate Tolerances.xlsx Author: Creating a Sheet Metal Gauge Table. Tables are included in the SolidWorks application, and are located in: install_dir\lang\language\Sheet Metal Gauge Tables. If you create a sheet metal gauge table, use a semi colon - ; - as a delimiter between values. With gauge tables, the radii and angles can differ. Aside from that, a variety of metals is available, including stainless steel, aluminum, cold-rolled and galvanized steel, and even copper and brass, in thicknesses ranging from 0.02 in. to 0.25 in. (depending on the alloy). Beyond sheet metal properties and available materials, here are eight ways to improve sheet metal parts.