Flatness Tolerance

The charts below show the maximum deviation from a perfectly horizontal flat surface. A ruler that does not flatten the material has been used to measure the amount of flatness. The measurement is taken from the highest point (or points) of the sheet or plate to the table surface minus the material thickness.

Note: If not otherwise specified, commercial quality is supplied. Flatness tolerances listed are of roller leveled sheets or plates with no or minimum margins. For material 10' or less in length, variation should not exceed amount shown in table. For material longer than 10', the variation in flatness for any 10 feet of length should not exceed the amount shown. Where the longer dimension is less than 36", the variation in flatness along the length and across the width should not exceed 1/4"in each direction. When the longer dimension is from 36"to 72", the flatness variation should not exceed 75 percent of the amount shown for the specified width; but in no case less than 1/4". Margins will usually increase the maximum deviation, please consult your IPA member supplier.

 

H.R. & C.R. Steel Sheet, Plate & Hot Dipped Galvanized Sheets

Stainless Steel and Other Heat Resistant Alloys Sheet & Plate

Aluminum & Copper

H.R. & C.R. Steel Sheet, Plate & Hot Dipped Galvanized Sheets

Stainless Steel and Other Heat Resistant Alloys Sheet & Plate

Aluminum & Copper

H.R. & C.R. Steel Sheet, Plate & Hot Dipped Galvanized Sheets

Stainless Steel and Other Heat Resistant Alloys Sheet & Plate

Aluminum & Copper

H.R. & C.R. Steel Sheet, Plate & Hot Dipped Galvanized Sheets

Stainless Steel and Other Heat Resistant Alloys Sheet & Plate

Aluminum & Copper