1035/4 International Standard OS1 Hot-rolled steel bars Part 4 : Tolerances Barres en acier laminées a chaud - Partie 4 : Tolerances Second edition - 1982-08-01 ISO 1035/4-1982 (E) UDC 629.14-422 : 621.753.1 Ref. No. ISO 1035/4-1982 (E) Descriptors : iron- and steel products, hot rolled products, metal bars, dimensions, dimensional tolerances, metric system. Price based on 3 pages Copyright International Organization for Standardization ed without license from IHS Not for Resale Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards institutes (Iso member bodies). The work of developing Inter- national Standards is carried out through ISo technical committees. Every member body interested in a subject for which a technical committee has been set up has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with Iso, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISo Council. International Standard ISO 1035/4 was developed by Technical Committee ISO/TC 17, Steel, and was circulated to the member bodies in April 1981. Australia India Romania Austria Italy South Africa, Rep. of Brazil Japan Spain Canada Kenya Sweden China Korea, Dem. P. Rep. of Switzerland Tanzania Czechoslovakia Korea, Rep. of Egypt, Arab Rep. of Netherlands Turkey United Kingdom France New Zealand Germany, F.R. Norway USSR Hungary Poland The member bodies of the following countries expressed disapproval of the document on technical grounds : Belgium USA This second edition cancels and replaces the first edition (i.e. ISo 1035/4-1976). C) Internatinnal Oraanizatinn fnr Standardizatinn. 198? Copyright International Organization for Standardization efrom IHS Not for Resale ISO 1035/4-1982 (E) INTERNATIONAL STANDARD Hot-rolled steel bars Part 4 : Tolerances Scope and field of application 4 Tolerances of hot-rolled steel round, square, hexagonal and octagonal bars This International Standard specifies metric dimensional tolerances applicable to hot-rolled steel bars supplied in straight 4.1 Tolerances on size lengths in the following product forms : a) round bars (for dimensions, see isO 1035/1); 4.1.1 The tolerances on size shall be as specified in table 2 b) square bars (for dimensions, see ISo 1035/2); (see 4.5). c) hexagonal bars; 4.1.2 The permissible ovality for all diameters of round bars, measured as the difference between the maximum and d) octagonal bars; minimum diameters of the same cross-section, shall be 75 % of e) flat bars (for dimensions, see ISo 1035/3) the total tolerance specified on the diameter according to table 2 (for example 1,2 mm for a nominal diameter of 40 mm The tolerances achievable by the manufacturer may vary with ordered according to tolerance class N) (see 4.5). the steel types. The tolerances required by the purchaser may differ according to the application of the bars. Thus this Inter- 4.1.3 The permissible out-of-square for all sizes of square national Standard specifies several tolerance classes (see bars, measured as the difference of the distance between parallel faces of the same cross-section, shall be 75 % of; the the International Standard relevant to the steel grades and, total tolerance specified on the normal width of side in table 2 where appropriate, on the order. (see 4.5). 2 References 4.1.4 The permissible out-of-section for al sizes of hex agonal and octagonal bars, measured as the maximum dif ISo 1035/1, Hot-rolled steel bars - Part 1 : Dimensions of ference in the distances across opposite flats of the same cross- round bars. section (three measurements in the case of hexagonal bars, four measurements in the case of octagonal bars) shall be 75 % Iso 1035/2, Hot-rolled steel bars - Part 2. : Dimensions of of the total tolerance for the