Hot Rolled Sheet Metal Thickness Tolerance

Standard tolerances for cold rolled steel usually choosing material thickness is one of the first steps a designer takes when starting a project.

Hot rolled sheet metal thickness tolerance. Both types of steel sheet have tolerance ranges. The material is cooled by the use of oil which also acts as a lubricant during the rolling process. As the metal sheet gets thinner between the rolls its speed increases. Gague are used to specify the thickness of a metal sheet.

The range of the tolerance minimum thickness to maximum thickness in each gauge range decreases as the sheet material becomes thinner on its nominal or mean thickness. The metal is rolled to the thickness of 0 5 3 mm in case of mild steel and 0 5 5 mm in case of stainless steel. Over 0 3125 to 0 4375 incl. Sheet metal thickness sheet metal is manufactured and delivered from the processing mill rolled to the standard thickness that you specify which is now metric.

Hr hot rolled cr cold rolled sheet metal gage guage size chart carbon steel sheets. The tolerances in the table and attachments reflect current manufacturing practices and commercial standards and are not representative of the manufacturer s standard gauge which has no inherent tolerances. Permitted variations in thickness of hot rolled mill plate quarto plate a b specified thickness t in. Sheet metal gauge thickness chart 2019 10 24t01 36 33 00 00 when working with sheet metal the term gauge is often used.

However the range of tolerance on hot rolled sheet is much wider than the range found on cold rolled sheet. Of irregular shape the over thickness tolerances apply to the greatest width corresponding to the width ranges shown. The following charts give typical astm and ansi steel sheet mechanical tolerance ranges. Sheet metal guage tolerances during the rolling process the rollers bow slightly which results in the sheets being thinner on the edges.

We work with nominal thicknesses so it s important to know the thickness tolerance on the material you chose in order to know if the final product will be suitable for your application. Astm ansi mechanical steel sheet mechanical tolerances.