Astm Sheet Metal Tolerances

The following charts give typical astm and ansi steel sheet mechanical tolerance ranges.

Astm sheet metal tolerances.

0236 plus 004 is considered the nominal for 24 ga. Browse by astm or ams select by astm or ams i e. 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. Table a2 8 permitted variations in flatness of cold rolled wide coil processed product as cut lengths.

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. 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. 0236 004 0276. 0276 41 88 lb weight of carbon steel per cubic ft 40 sq ft 4 x10 sheet 46 24.

This explains why 11 gauge at 0 1196 inch is called 1 8th inch. Theoretical nominal weight tnw weight based upon the lineal footage using nominal weight per foot. 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. Astm a240 a480 steel sheet sthickness tolerance.

Actual weight actual scale weight of the coil. The tolerance is only 0 014 inch for sheet narrower than 40 inches. Hr hot rolled cr cold rolled sheet metal gage guage size chart carbon steel sheets. 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.

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. Astm ansi mechanical steel sheet mechanical tolerances. 0236 plus 008 is considered to be 24 ga. 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.

1 1 this specification covers the general requirements for steel sheet in coils and cut lengths. Specifications a414 a414m a424 a424m a606 a606m a659 a659m a794 a794m a1008 a1008m a1011 a1011m and a1039. During the rolling process the rollers bow slightly which results in the sheets being thinner on the edges. 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.

Let s say that 11 gauge has a nominal thickness of 0 1196 inch from memory. Tolerance below apply to the following alloys.