Sheet Gauge Sheet Thickness Calculator Last Updated On July 20, 2023 by Sandeep Kumar Metal Gauge Thickness Calculator Choose a material: Mild Steel Aluminum Stainless Steel Galvanized Steel Copper Gauge number: Calculate Note: Enter Mild Steel gauge number from 7 to 28. Aluminum, galvanized steel & Copper 7 to 30. Stainless steel 8 to 30. Sandeep Kumar Material Welding is run by highly experienced welding engineers, welding trainers & ASNT NDT Level III bloggers. We strive to provide most accurate and practical knowledge in welding, metallurgy, NDT and Engineering domains. ...