ISO INTERNATIONAL STANDARD 9034 First edition 1987-07-01 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION Hot-rolled structural steel wide flats - Tolerances on dimensions and shape Larges-plats en acier de construction laminés a chaud -- Tolerances sur dimensions et forme Reference number ISO 9034: 1987 (E) ted without license from IHS Not for Resale Foreword ISo (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental 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. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 9034 was prepared by Technical Committee ISO/TC 17, Steel. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, unless otherwise stated. International Organization for Standardization, 1987 Printed in Switzerland Copyright International Organization for Standardization ISO 9034 : 1987 (E) INTERNATIONAL STANDARD Hot-rolled structural steel wide flats --- Tolerances on dimensions and shape 1 Scope and field of application Tolerances on dimensions 4 This International Standard specifies the tolerances on the Width 4.1 dimensions, shape and mass of hot-rolled wide flats of non- alloyed and alloyed steels (excluding stainless steels). The tolerance on width shail be ± 2 % of the nominal width but shall not exceed 10 mm. It applies to wide flats, as defined in clause 3, of steels with a specified minimum yield strength equal to or less than 700 N/mm2. 4.2 Thickness 4.2.1 The tolerance on thickness for nominal thickness up to 2 Reference 100 mm shall conform to the values in table 1. According to the specification when ordering, the wide flats may be supplied ISo 7788, Steel - Surface finish of hot-rolled plates and wide flats Delivery requirements either with a variable minus tolerance depending on the nominal thickness (class A); Definition or with a constant minus tolerance of 0,3 mm (class B). wide flat : A flat product of width greater than 150 mm up to 1 250 mm and a thickness generally over 4 mm, always sup- 4.2.2 By agreeement at the time of ordering, wide flats may plied in lengths, i.e. not coiled. The edges are sharp. Wide also be supplied with other types of tolerances with respect to the nominal thickness (symmetricat, wholly over or wholly may atso be produced by shearing or flame cutting wider flat under, etc.), provided that the permissible deviation range products provided the tolerances as given in this International given in table 1 and the maximum difference in thickness in a transverse cross-section as given in table 2 are respected. Standard are observed. Table 1 -- Tolerances of thickness Values in millimetres Permissibie deviation on nominal thickness (see 6.2) Nominal thickness Class A Class B e under over under over 0,4 0,6 0,3 0,7 4<e< 0,5 0,7 0,3 0,9 >a>8 15 0,6 0,8 0,3 1,1 15 < e < 25 25 < e < 40 0,8 0,9 0,3 1,4 40 < e < 80 1,0 1,4 0,3 2,1 80 <e < 1001) 1,0 2,2 0,3 2,9 1) For nominal thicknesses over 100 mm, the permissible deviations shall be the subject of agreement at the time of ordering. 1 Copyright International Organization for Standardization Not for Resale