General Tolerance Sheet Metal Thickness

General dimensional tolerance of blanking unit mm 1.

General tolerance sheet metal thickness.

Galvanized sheet thickness tolerances thickness in inches weight thickness in millimeters gage min. The flatness tolerance of of strip sheet plate and cut length shall not exceed 10mm for normal cases and 7mm where a special tolerance fs is required for length 3000mm and 12mm for normal cases and 8mm where a special tolerance fs is required for length 3000mm. Category b c d. You can use this sheet metal data table for all the common commercial grades of stainless steel such as 304 316 and 430.

Tolerances on thickness mm width mm normal flatness mm special flatness mm th 2 00 w 1200 18 9 1200 w 1500 20 10 w 1500 25 13 2 00 th 25 00 w 1200 15 8 1200 w 1500 18 9 w 1500 23 12 2 the flatness tolerances only apply to sheet and plate. For sheet metal parts iso 27 68 mk is used. Without a specified tolerance this could mean the purchaser wants a metal sheet that is 48 00000000 inches by 96 00000000 inches. General dimensional tolerances for parts formed by press working from sheet metal basic size step grades g rad ea b c over 1000 to 2000 incl.

A tolerance can be beneficial to both the producer and the purchaser. Over 120 to 400 incl. Sheet metal thickness tolerances for austenitic ferritic and martensitic stainless steels. Commonly used steel sheet metal ranges from 30 gauge to about 7 gauge.

Stainless steel sheet metal tolerances table chart. In the u s the thickness of sheet metal is commonly specified by a traditional non linear measure known as its gauge. As per design requirements and manufacturing capability tolerance class is defined. Standard specification for general requirements for sheet steel metallic coated by the hot dip process formerly astma525.

And astma653 a653m 94 standard specification for sheet steel zinc coat. In the above example m and k has defined the tolerance. In most of the world sheet metal thickness is consistently specified in millimeters. These are the most common grades asked for by our customers when wanting sheet metal fabrications.

And for machined components iso 27 68 fh can be used. For instance a purchaser may want a metal sheet that is 48 inches long by 96 inches wide. Over 400 to 1000 incl. The larger the gauge number the thinner the metal.

By press working from sheet metal and shear from metal plates technical data technical data table 1.