ANSI H35.2:2017 pdf free download – American National Standard Dimensional Tolerances for Aluminum Mill Products
1. Definitions Bar
A 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 lengths Fin Stock— Coiled sheet or foil suitable and intended for manufacture of fins for heat-exchanger applications. Foil—Generally, 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 the thickness range 0.006-0.0079 inch defined for foil and sheet. Foil products in this thickness range are supplied to foil product specifications. Shape—This term is no longer recommended. The term “ Profile” is preferred. See “ Profile.” Sheet—Generally, a rolled product that is rectangular in cross section with thickness greater than 0.006 inch 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. Pipe—Tube in standardized combinations of outside diameter and wall thickness. Pipe is commonly designated by “ Nominal Pipe Sizes” and “ ANSI Schedule Numbers.” Plate—A rolled product that is rectangular in cross section and with thickness not less than 0.250 inch with sheared or sawed edges.
Work on the tolerances 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 Association’ s Extruded Prod- ucts Division to develop drafting standards for these products. One of the committee ’ s assignments was to develop 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 Association’ s technical activities 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 in 1954, and the resulting data were published in the first edition of the Association’ s “ 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 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 extended 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 expressing the tolerances.