Galvanized Sheet Metal Thickness Tolerance

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.

Galvanized sheet metal thickness tolerance.

Aisi thickness tolerance ranges galvanized steel sheets thinkness. However the range of tolerance on hot rolled sheet is much wider than the range found on cold rolled sheet. Sheet metal guage tolerances. During the rolling process the rollers bow slightly which results in the sheets being thinner on the edges.

Continuous sheet galvanized coating specifications english. Click here for a gauge to mm conversion chart. 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. Sheet metal is manufactured and delivered from the processing mill rolled to the standard thickness that you specify which is now metric.

Thickness inches thickness inches galvanized galvannealed aluminized sheet. For example 18 gauge steel according to a gauge conversion chart is 0 0478 inch or 1 214 millimeter. Both types of steel sheet have tolerance ranges. 11 12 tolerances shown are for widths over 40 to 60 inclusive all other gages tolerances shown are for widths over 32 to 60 inclusive.

All other gauges tolerances shown are for width over 32 to 60 inclusive. The sheet metal does however have a tolerance on the rolling thickness which needs to be taken into account when designing a tight fitting assembly especially as the sheet metal material gets thicker. A gauge conversion chart can be used to determine the actual thickness of sheet metal in inches or millimeters. Galvanized sheet thickness tolerances thickness in inches weight thickness in millimeters gage min.

Gauges 10 11 12 tolerances shown are for widths over 40 to 60 inclusive. Sheet metal thickness is denoted by gauge sometimes spelled gage which indicates a standard thickness before processing. Processing may include polishing or the applying of protective plastics which will decrease or increase a sheet s thickness respectively.