Astm Sheet Metal Tolerances

Astm a240 a480 steel sheet sthickness tolerance.

Astm sheet metal tolerances.

Tolerance below apply to the following alloys. Browse by astm or ams select by astm or ams i e. 1 1 this specification covers the general requirements for steel sheet in coils and cut lengths. The tolerance is only 0 014 inch for sheet narrower than 40 inches.

Table a2 8 permitted variations in flatness of cold rolled wide coil processed product as cut lengths. Theoretical nominal weight tnw weight based upon the lineal footage using nominal weight per foot. This explains why 11 gauge at 0 1196 inch is called 1 8th inch. Astm s steel standards are instrumental in classifying evaluating and specifying the material chemical mechanical and metallurgical properties of the different types of steels which are primarily used in the production of mechanical components industrial parts and construction elements as well as other accessories related to them.

Astm b152 ams 4530 ams 4532 astm b103 astm b122 astm b152 astm b194 astm b36 astm b465 astm b534 astm b591 astm b740 astm b768 services. And astma653 a653m 94 standard specification for sheet steel zinc coat galvanized or zinc iron alloy coated galvanized by the hot dip process. Thcikness in mm deviation allowed for the specified width w in mm w 60 1525 w 60 1525 0 072 1 83 0 006 0 15 0 009 0 22 0 072 1 83 0 083 2 11 0 007 0 18 0 010 0 25 0 083 2 11 0 098 2 49 0 008 0 20 0 011 0 27. Let s say that 11 gauge has a nominal thickness of 0 1196 inch from memory.

Sheet metal guage tolerances. During the rolling process the rollers bow slightly which results in the sheets being thinner on the edges. Hr hot rolled cr cold rolled sheet metal gage guage size chart carbon steel sheets. The following charts give typical astm and ansi steel sheet mechanical tolerance ranges.

Actual weight actual scale weight of the coil. These measurements are based on astm a924 924m 94 standard specification for general requirements for sheet steel metallic coated by the hot dip process formerly astma525. Astm a480hot rolled sheet coil thickness tolerance. 0236 004 0276.

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. It applies to the following specifications that describe carbon steel structural steel and high strength low alloy steel hsla furnished as hot rolled sheet and cold rolled sheet. 0236 plus 004 is considered the nominal for 24 ga. 253 330 333 304 309 316 321 347 410 446 2205 2507 2101 17 4 17 5 800 tolerances listed were taken from astm a480 reference only cold rolled coil.

0236 plus 008 is considered to be 24 ga. The permitted thickness would be from 0 1196 to 0 1356 as this thickness permits 0 016 inch tolerance for sheets over 40 inch wide.