Sheet metal guage tolerances during the rolling process the rollers bow slightly which results in the sheets being thinner on the edges.
Galvanized steel sheet thickness tolerance.
Weights are based on ordered thickness at 41 82 lbs.
The following charts give typical astm and ansi steel sheet mechanical tolerance ranges.
Galvanized sheet thickness tolerances thickness in inches weight thickness in millimeters gage min.
Continuous sheet galvanized coating specifications english.
10 1382 1472 1292.
Tolerances shown are for 48 wide sheets.
Per square foot per inch thick.
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.
Hr hot rolled cr cold rolled.
Steel sheet thickness tolerances hot rolled h r p o cold rolled galvanized.