~~ International Standard INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWlEXAYHAPO~l iAR OPTAHkl3AuMR fl0 CTAH~APTVl3A~MM*ORGANISATlON INTERNATIONALE DE NORMALISATION Hot rolled steel bars \ Part 4 To[.]
~~ International Standard INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWlEXAYHAPO~liAR Hot-rolled steel bars Part : Tolerantes Barres en acier laminhes A chaud - Second edition UDC fl0 CTAH~APTVl3A~MM*ORGANISATlON INTERNATIONALE DE NORMALISATION \ Partie : Tokances 1982-08-01 629.14-422 : 621.753.1 Descriptors 5: - OPTAHkl3AuMR : iron- and steel products, Ref No hot rolled products, metal bars, dimensions, dimensional tolerantes, ISO 1035/4-1982 (EI metric System Price based on pages Foreword ISO (the international Organization for Standardization) is a worldwide federation of national Standards institutes (ISO member bedies) The work of developing lnternational 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 the member bodies for approval before their acceptance the ISO Council International Standard ISO 1035/4 was developed Stee/, and was circulated to the member bodies lt has been approved by the member bodies committees are circulated as International Standards by Technical Committee in April 1981 of the following India Italy Japan Kenya Korea, Dem P Rep of Korea, Rep of Netherlands New Zealand Norway Poland Australia Austria Brazil Canada China Czechoslovakia Egypt, Arab Rep of France Germany, F R Hungary The member bodies of the fol lowing on technical grounds : countries countries lSO/TC edition G3 International Printed in Switzerland cancels and replaces Romania South Africa, Rep of Spain Sweden Switzerland Tanzania Turkey United Kingdom USSR exp ressed disapproval Organkation for the first edition Standardkation, 1982 17, : of the document Belgium USA This second to by (i.e ISO 1035/4-1976) ISO 1035/4-1982 (E) STANDARD INTERNATIONAL Hot-rolled steel bars Part : Tolerantes Scope and field of application This International Standard specifies metric dimensional tolerantes applicable to hot-rolled steel bars supplied in straight lengths in the following product forms : a) round bars (for dimensions, see ISO 1035/1); b) Square bars (for dimensions, c) hexagonal bars; d) octagonal bars; e) flat bars (for dimensions, Tolerantes round, bars on size on size shall be as specified in table 4.1.2 see ISO 1035/3) References ISO 1035/1, round bars 4.1 4.1.1 The tolerantes (sec 4.5) see ISO 1035/2); The tolerantes achievable by the manufacturer may vary with the steel types The tolerantes required by the purchaser may differ according to the application of the bars Thus this International Standard specifies several tolerante classes (sec table 1) The appropriate tolerante class should be specified in the International Standard relevant to the steel grades and, where appropriate, on the Order Tolerantes of hot-rolled steel Square, hexagonal and octagonal Hot-rolled steel bars - Part : Dimensions of ISO 103512, Hot-rolled Square bars steel bars - Part : Dimensions of ISO 103513, Hot-rolled bars steel bars - The permissible ovaiity for all diameters of round bars, measured as the differente between the maximum and minimum diameters of the same Cross-section, shall be 75 % of the total tolerante specified on the diameter according to table (for example 1,2 m m for a nominal diameter of 40 m m ordered according to tolerante class N) (sec 4.5) 4.1.3 The permissible out-of-Square for all sizes bars, measured as the differente of the distance parallel faces of the same Cross-section, shall be 75 total tolerante specified on the normal width of side of Square between % of the in table (sec 4.5) 4.1.4 The permissible out-of-section for all sizes of hexagonal and octagonal bars, measured as the maximum difference in the distances across opposite flats of the same crosssection (three measurements in the case of hexagonal bars, four measurements in the case of octagonal bars) shall be 75 % of the total tolerante for the nominal size according to table (sec 4.5) Survey on tolerante designations Part : Dimensions of flat 4.2 classes and their The tolerantes 4.3 Table gives a Survey on the different classes specified in this International designations applied for these dimensional tolerante Standard and on the Tolerantes on length on length Straightness The straightness shall be as specified in table tolerantes tolerantes shall be as specified in table (sec 4.5) ti (Eb Twist tolerantes sf for squares, hexagons and octagons twist tolerantes are required by the purchaser, this shall be specified on the Order and the method of measurement shall be agreed, together with the values to be achieved (sec 4.5) 4.5 Applicability sf the tolerantes In cases where length tolerante specified, the measurement sf 4.3 or agreed under 4.4 apply 100 mm from each end of the length tolerante classes, the length of the bar 5.1 Tolerantes classes or (sec table 3) are the tolerantes given in 4.1 and to a distance of not less than bar In the case of the other tolerantes apply to the total of hst-rolled Tolerantes flat on width The tolerantes on width of hot-rolled specified in table (See 5.6) 5.2 Tolerante Tolerantes The tolerantes table 5.4 on length Straightness Twist bars shall be as flat bars shall be as i on length for flat bars shall be as specified in tolerantes The straightness tolerantes in table (sec 5.6) 5.5 flat on thickness The tolerante on thickness of hot-rolled specified in table (sec 5.6) 5.3 ?!i MG= - Il bars (sec the figure) shall be as specified tolerantes If twist tolerantes are required by the purchaser, this shall be specified in the Order and the method of measurement shall be agreed together with the values to be achieved (see 5.6) 5.6 Agglicability of the tolerantes In cases where length tolerante classes or isee table 3) are specified, the measurement of the tolerantes given in 5.1, 5.2 and 5.4 or agreed under 5.5 apply to a distance of not less than 100 mm from each end of the bar In the case of the other lengths tolerante classes, the tolerantes apply to the total length of the bar i ISO 1035/4-1982 (El Table - Tolerantes round, Square, hexagonal Nominal sizesl) Tolerante Over Up to and including N F 9) mm mm mm mm mm 15 25 35 50 80 100 120 160 15 25 35 50 80 100 120 160 200 Ib 0,4 f 0,5 I!I 0,6 + 0’8 * 1,o z!I 1,3 $r 1,6 f2 31 2,5 200 - Table - on size for hot rolled and octagonal steel bars on size for classes AI I!I It + k f I!I f f f 1,5%of size 0,3 0,4 0,5 0,6 0,8 l,o 1,3 1,6 2,0 I In any one Table - I Nominal II - mm I mm I LO I mm All mm 1) [ Ll mm + 200 on length L2 mm + 1002) on width mm zk 0,8 f 1,2 f 1,5 z!z2,0 I!I 2,5 on length Table - Tolerantes Tolerantes 50 75 100 125 150 50 75 100 125 on the width Up to and including I 2,5 mm/m Normal for class L3 1 mm L4 + 502) I 1 mm Nominal mm + 252) II 3) 1) The length of the bar is left to the choice of the manufacturer, shall be not less than m and not more than 12 m it thicknesses 2) When agreed at the time of ordering, the bars tan be supplied with symmetrical “I!I” tolerantes In this case, the total tolerante range shall be the same as specified for the relevant “ +” tolerantes (for example k 25 mm instead of mm) +50 I Over Up to and including I mm mm I - 20 40 - 20 40 tolerantes on the thickness of flat bars Tolerantes on thicknesses nominal widths (b) b