ISO INTERNATIONAL STANDARD 4782 Second edition 1987-11-01 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION iso ORGANISATIONINTERNATIONALEDENORMALISATION Metal wire for industrial wire screens and woven wire cloth Fils metalliques pour tamis et tissus métalliques industriels Referencenumber ISO 4782: 1987 (E) No reproduction or networking pemitted without license from IHS Not for Resale Foreword Iso (the International Organization for Standardization) is a worldwide federation of nationaf standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member 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 4782 was prepared by Technical Committee ISO/TC 24, Sieves, sieving and other sizing methods. This second edition cancels and replaces the first edition (IS0 4782 : 1981); in addition to the specifications laid down in isO 4782 : 1981, this second edition also specifies tolerances on the nominal diameters of wires, requirements and testing. 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 No reproduction or networking permitted without license from IHS Not fr Resale ISO 4782 : 1987 (E) INTERNATIONALSTANDARD Metal wire for industrial wire screens and woven wire cloth Scope and field of application Two measurements of diameter made at right angles on any cross-section of the wire shall not differ by more than half of This International Standard specifies the diameters of and the the tolerance specified in table 1. requirements for metal wire to be used for the manufacturing of wire screens and woven wire cloth for industrial purposes. It applies to metal wire with circular cross-section from 25 to 5 Testing 0,02 mm in diameter. 5.1 Sampling 2 References The method of sampling and the number of delivery units to be Iso 3, Preferred numbers - Series of preferred numbers. tested shall beagreedbetween supplierandpurchaser. Iso 3611, Micrometer callipers for external measurement. 5.2 General appearance The general appearance of the wire shall be examined visually 3Diameters with the aid of a low-magnification lens. The nominal diameters of wire according to the R 10 and R 20 series of preferred numbers specified in ISo 3, with the 5.3 Diameter addition of the 0,03 mm value from the R 40 series, are listed in column 1 in table 1; values in the R 10 series (printed in bold The diameter of the wire shall be measured with a micrometer type) should be given preference. calliper, preferably in accordance with ISo 3611. For diameters below0,1mm,thecallipershallbeequippedwithoptical magnification of the reading scale. Requirements 5.4 Test report 4.1 General appearance The test report shaii make reference to this international The surface of the wire shall be smooth and shall not display Standard and shall comprise thefollowing information : anyburrsoranyotherroughness,corrosionorcleansingstains. Thewire inone coil ordrumorononespool shall bein one a) the nominal diameter of the wire; length without any knots or any welded or soidered spots with reduced tensile strength. b)the wire material; The wire in one delivery shall be of uniform colour. c) the quantity of delivery units tested; d) any deviations from the general appearance specified 4.2 Tolerance on diameter in 4.1; The measured diameter of