1、ANSI H35.2-2017 Revision of H35.2-2013 American National Standard Dimensional Tolerances for Aluminum Mill Products Secretariat The Aluminum AssociationIncorporatedAmerican National Standard Approval of an American National Standard requires verification by the American National Standards Institute
2、(ANSI) that the requirements for due process, consensus, and other criteria for approval have been met by the standards developer. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agree- ment has been reached by directly and materially affected intere
3、sts. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objec- tions be considered, and that a concerted effort be made toward their resolution. The use of American National Standards is completely voluntary; their exist
4、ence does not in any respect pre- clude anyone, whether he has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. The American National Standards Institute does not develop standards and will under no
5、 circumstances give an interpretation of any American Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretation should be addressed to the secretari
6、at or sponsor whose name appears on the title page of this standard. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken to reaffirm, revise, or withdraw this standard no lat
7、er than five years from the date of approval. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute, 25 West 43rd Street, New York, NY 10036.ANSI H35.2-2017 Revision of H35.2-2013 American National S
8、tandard Dimensional Tolerances for Aluminum Mill Products Secretariat The Aluminum Association, Inc. 1400 Crystal Drive, Suite 430 Arlington, Virginia 22202 Approved May 12, 2017 American National Standards Institute Copyright 2017, The Aluminum Association, Inc. All rights reserved. Unauthorized re
9、production, distribution, creation of derivative works, and/or sale of this work is prohibited. ANSI H35.22017 Contents1. Definitions . . . . . . . . . . . . . . 72. Standard Limits for Expressing Tolerances . . . 83. Applicable Limits . 94. Section Intentionally Blank . 95. Section Intentionally Bl
10、ank . 96. Section Intentionally Blank . 9 7. Sheet and Plate 9Sheet and PlateTables 7.7a7.18 . 10Special Finished Sheet and Plate ProductsTables 7.267.43 14 Commercial Roofing and SidingTables 7.267.30 . 14Duct SheetTables 7.317.34 15Tread Sheet and PlateTables 7.367.43 . 15 8. Fin Stock . 17Fin Sto
11、ckTables 8.28.3 . 179. Foil . . . . . . . . . 18FoilTables 9.29.24 18Unmounted FoilTables 9.29.8 18Laminated FoilTables 9.99.16 19Printed FoilTables 9.179.24 20 10. Wire, Rod, and BarRolled or Cold Finished . 21Wire, Rod and BarRolled or Cold-FinishedTables 10.510.20 21 11. Wire, Rod, Bar and Profil
12、esExtruded 24Wire, Rod, Bar and ProfilesTables 11.211.14 . 24 12. Tube and Pipe 32Tube and PipeTables 12.212.55 . 33Extruded TubeTables 12.212.14 33Extruded Coiled TubeTables 12.1612.18 . 37Drawn TubeTables 12.2012.32 . 38Heat Exchanger TubeTables 12.3412.39 . 41Welded TubeTables 12.4112.47. . . . .
13、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42PipeTables 12.49 12.55 . 44 13. Structural Profiles 47 14. Forging Stock 48Forging StockTables 14.114.4 48 15. Forgings . 49Hand ForgingsTable 15.3 49 16. Electrical Conductors . 50Electrical ConductorsTables 16.716.35 . 50Wire,
14、Rod and BarRolled or Cold FinishedTables 16.716.21 50Extruded Rod and BarTables 16.2216.29 . 52PipeTables 16.3116.35 54ACCREDITED STANDARDS COMMITTEE H35 ON ALUMINUM AND ALUMINUM ALLOYS OFFICERS Francine Bovard, Chairman John Weritz, Secretary COMMITTEE MEMBERS THE ALUMINUM ASSOCIATIONFRANCINE BOVAR
15、D, Arconic, New Kensington, Pennsylvania AEROSPACE INDUSTRIES ASSOCIATION OF AMERICAJAMES R. RENTSCH, Aerospace Industries Association of America, Arlington, Virginia ALUMINUM EXTRUDERS COUNCILOLIVIER GABIS, Wagstaff, Saint Clairsville, Ohio AMERICAN FOUNDRY SOCIETYSTEVE ROBISON, American Foundry So
16、ciety, Schaumburg, Illinois ASTM INTERNATIONALBRIAN P . COCHRAN, ASTM B07, Wabash, Indiana METAL SERVICE CENTER INSTITUTEJULIE S. THANE, Metal Service Center Institute, Chicago, Illinois NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATIONVINCE BACLAWSKI, National Electrical Manufacturers Association, Arli
17、ngton, Virginia SAE INTERNATIONAL (SOCIETY OF AUTOMOTIVE ENGINEERS)ROBERT STEFFEN, Raytheon Precision Manufacturing, Dallas, Texas U.S. DEPARTMENT OF COMMERCEFRANK W. GAYLE, National Institute of Standards and Technology, Gaithersburg, Maryland U.S. DEPARTMENT OF THE NAVYCARL LEVANDUSKY, Naval Air W
18、arfare Center Aircraft Division, Lakehurst, New Jersey U.S. DEPARTMENT OF THE AIRFORCEJEFFREY CALCATERRA, US Airforce Systems Support Division, Dayton, Ohio ANSI H35.22017 Foreword This Standard is a revision of “American National Standard Dimensional Tolerances for Aluminum Mill Products” issued in
19、 2013 (ANSI H35.2-2013). The tolerances included in this Standard were developed by the Technical Committee of The Aluminum Association. They are broadly accepted both within the aluminum industry itself and by users of the metal. They are the basis of the dimensional tolerances specified in U.S. go
20、vernment, technical society, and other specifications for aluminum products. They represent the maximum deviation from specified dimensions that may be expected in any individual piece. For most pieces the deviation from specified dimensions will be less than the tolerance shown. Work on the toleran
21、ces began in the Aluminum Association in 1949, five years before its Technical Com- mittee was established. In that year a special committee was appointed by the Associations Extruded Prod- ucts Division to develop drafting standards for these products. One of the committees assignments was to devel
22、op standard tolerances for aluminum extrusions. The committee completed its work later in 1949, and the Association issued the first edition of its Drafting Standards for Extruded and Tubular Products, including the tolerances, in October of that year. By 1954, the Associations technical activities
23、had grown to the point that a standing Technical Com- mittee was needed. One of the first jobs undertaken by this committee was the compilation of mechanical property data for commonly used aluminum alloys and dimensional tolerances for other aluminum mill prod- ucts. This work was completed later i
24、n 1954, and the resulting data were published in the first edition of the Associations “Standards for Aluminum Mill Products” in June 1955. Successive editions of the “Standards for Aluminum Mill Products” have been revised to include new data and to keep the manual abreast of industry advances. In
25、1968 the title was changed to “Aluminum Standards and Data” to reflect the adoption of a revised format. Many refinements have been made in the tolerances as experience was gained in their use. In addition, tolerances have been developed for products not covered initially, and the data have been ext
26、ended to em- brace the larger sizes now being produced. All of these additions and refinements have been incorporated into this Standard. Included also are definitions of the various products as given in “Aluminum Standards and Data” published by the Aluminum Association, and standard limits for exp
27、ressing the tolerances. This Standard was originally developed and subsequently revised using the “canvass” method and pub- lished under the proprietary sponsorship of the Aluminum Association. At the request of the Aluminum Asso- ciation, the establishment of Standards Committee H35 on Aluminum and
28、 Aluminum Alloys was authorized by the American National Standards Institute on 17 February 1970, with the Association serving as Secretariat. The 1971 revision of ANSI H35.2 was the first revision developed by Standards Committee H35, under the “Standards Committee” procedures, and the 1972, 1975,
29、1978, and 1982 revisions were developed under the auspices of that Committee. Standards Committee H35 was transferred to an Accredited Standards Committee on December 28, 1983, and this revision was developed under the Accredited Standards Committee method. This latest (2017) revision consists of up
30、dated illustrations, removal of footnote 1, changes to the list of definitions, the addition of the definition of applicable limits, edits to the definition of mean wall thickness, editorial corrections and clarifications to table headings and footnotes. These changes are indicated by high- lights i
31、n the text. 6 ANSI H35.22017 1. Definitions BarA solid wrought product that is long in relation to its cross section which is square or rectangular (excluding plate and flattened wire) with sharp or rounded corners or edges, or is a regular hexagon or octagon, that is typically supplied in straight
32、lengths and in which at least one perpendicular distance between parallel faces is 0.375 inch or greater. In North America, below this limit the product is called “Wire. ” In Europe, bar is supplied in straight lengths; if supplied in coiled form, the product is called “Wire. ” Fin StockCoiled sheet
33、 or foil suitable and intended for manufacture of fins for heat-exchanger applications. FoilGenerally, a rolled product rectangular in cross section of thickness equal to or less than 0.0079 inch (Formerly 0.006 inch, changed to 0.0079 inch for international harmonization). There is an overlap in th
34、e thickness range 0.006-0.0079 inch defined for foil and sheet. Foil products in this thickness range are supplied to foil product specifications. Forging StockA solid product, typically ingot, rod, bar for profile, intended and suitable for forging. Forging stock is typically a cast product or an e
35、xtruded product. PipeTube in standardized combinations of outside diameter and wall thickness. Pipe is commonly designated by “Nominal Pipe Sizes” and “ANSI Schedule Numbers. ” PlateA rolled product that is rectangular in cross section and with thickness not less than 0.250 inch with sheared or sawe
36、d edges. Tread PlatePlate (or sheet) upon which a pattern has been impressed on one side, by rolling using a specially prepared roll with an appropriate pattern, to provide improved traction. Profile A wrought product that is long in relation to its cross-sectional dimensions which is of a form othe
37、r than that of sheet, plate, rod, bar, tube, wire or foil. For profiles sometimes the term “Shape” or “Section” is used; however; the term “Shape” is no longer recommended.Structural ProfileA profile, rolled or extruded, commonly used for structural purposes such as angles, channels, H-beams, I-beam
38、s, tees, and zees. RodA solid wrought product of circular cross section that is long in relation to its diameter, typically supplied in straight lengths. In North America, the minimum diameter of a rod is 0.375 inch; below this limit, the product is called “Wire. ” In Europe, rod issupplied in strai
39、ght lengths and is often called “Round Bar”; if supplied in coiled form, the product is called “Wire. ” ShapeThis term is no longer recommended. The term “Profile” is preferred. See “Profile. ” SheetGenerally, a rolled product that is rectangular in cross section with thickness greater than 0.006 in
40、ch and less than 0.250 inch with slit, sheared or sawed edges. There is an overlap in the thickness range of 0.006-0.0079 inch defined for foil and sheet. Sheet products in this thickness range are supplied to sheet product specifications.Alclad SheetA composite aluminum sheet having an aluminum cor
41、e and a metallurgically bonded aluminum layer or layers anodic to the core, on one or both sides, thus electrolytically protecting the core against corrosion. If only one side is clad, the product is often named “Alclad One Side Sheet. ”Brazing SheetSheet of a low melting temperature alloy used for
42、brazing or a clad sheet product having a bonded layer or layers of a low melting temperature alloy used for brazing.Duct SheetCoiled or flat sheet suitable for duct applications. TubeA hollow wrought product of uniform cross- section with only one enclosed void and with a uniform wall thickness, sup
43、plied in straight lengths or in coiled form. Cross-sections are in the shape of circles, ovals, squares, rectangles, equilateral triangles or regular polygons and can have corners rounded, provided the inner and outer cross-sections are concentric and have the same form and orientation. Tube can be
44、formed by extrusion or by forming and joining of sheet.Heat-Exchanger TubeA tube used in an apparatus in which fluid inside the tube will be heated or cooled by fluid outside the tube, but the term is typically not applied to coiled tube or to tube for use in refrigerators or radiators.Welded TubeA
45、tube produced by longitudinal seam-welding, typically of formed sheet. Welded tube can be fabricated by arc-welding with or without welding wire, high frequency seam welding, or any other type of welding. WireA solid wrought product that is long in relation to its cross section, which is square or r
46、ectangular with sharp or rounded corners or edges, or is round, Dimensional Tolerances for Aluminum Mill Products 7 ANSI H35.22017 hexagonal, or octagonal. In North America, the maximum diameter or perpendicular distance between parallel faces of a wire is 0.375 inches; above this limit the product
47、is called “Rod” or “Bar”. In Europe, wire is supplied in coiled form; if supplied in straight lengths, the product is called “Rod” or “Bar. ” 2. Standard Limits for Expressing Tolerances 2.1 Standard limits for expressing the tolerances depend on the type of instrument ordinarily used in measuring t
48、he particular dimension. Where instruments permitting the required degree of accuracy generally are used, the tolerances are expressed in decimals as follows (except for foil): Tolerance less than 0.005 in. . Multiple of 0.0005 Tolerance of 0.005 in. and greater . 0.XXXFor measurements commonly made
49、 with instru- ments not permitting such accuracy, the tolerances are expressed in fractions. 2.2 Rounding For purposes of determining con- formance to the dimensional tolerances, a mea- sured value is not rounded off. To determine appli- cable limits when a dimension is specified to more decimal places than are used in these standards, it shall be rounded off to the same number of places in conformance with ASTM E29, Standard Practice for Using Significant Digits in Test Data to Deter- mine Conformance with
