ISO INTERNATIONAL STANDARD 20081 First edition 2005-02-15 Zinc and zinc alloys Method of sampling Specifications Zincetalliagesde zincMethodes d'échantillonnageSpécifications Reference number ISO 20081:2005(E) @ISO2005 vithout license from IHS Not for Resale ISO 20081:2005(E) Contents Page Foreword .iv 1 Scope 2 Normativereferences 3 Terms and definitions. 4 Principle ..... 5 Apparatus... 6 Identificationofsamplesandpreparationoftestpiece... 6.1 Identification... 6.2 Preparation... 7 Procedure.... 7.1 Frequencyofsamplingduringcasting.. 7.2 Castproducts.... Annex A(normative) Sampling of ingots with a weight equal to or less than 3o kg... ili CopyrightIntemationalOanizansandardzaton'ghtsreserved UM OS ut license from IHS Not for Resale ISO20081:2005(E) 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 InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2 The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least75%of the member bodies castinga vote Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 20081 was prepared by Technical Committee ISO/TC 18, Zinc and zinc alloys, Subcommittee SC 1, Methods of sampling and analysis ofzinc and zinc alloys. This first edition cancels and replaces ISO3751:1976,ISO3752:1976,ISO 3816:1976 and ISO3817:1976, which have been technically revised. @ISO 2005 All rights reserved onal Organization for Standardizatior Not for Resale INTERNATIONALSTANDARD ISO20081:2005(E) Zinc and zinc alloys Method of sampling Specifications Scope 1 This International Standard specifies the requirements for sampling of zinc and zinc alloys, as specified in ISO752andISO301,for analysis. 2 Normative references references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments)applies. Iso 301, Zinc alloy ingots intended forcasting ISO 752, Zinc ingots 3 Terms and definitions apply. 3.1 sample portion of the product, representative of its chemical composition 3.2 test piece final form of the material submitted for analysis 3.3 consignment of castproduct material received as load NOTE This definition is used unless otherwise agreed between the purchaser and the supplier for the purpose of sampling. 3.4 sampling unit individual cast product selected from a consignment 3.5 gross sample total amount of sampling units selected from a consignment 3.6 testsample sampleprepared from the gross sample and from which test portions aretaken Copyrhtmtialozandardzaonghtsreserved 1 from IHS Not for Resale ISO20081:2005(E) 3.7 testportions quantity of material taken from the test sample and on which the analysis is actually carried out Principle Since zinc and zinc alloy ingots have very different shapes and weights, the chemical composition of samples manufacture. Apparatus 5.1 Ladle, designed to hold sufficient molten metal to completely fill the sample mold, with a handle or other equipment suitable to reach into a furnace, trough, pot or crucible. It shall be made of a material not affecting the molten metal (i.e. chemically inert). rapid solidification of the metal and avoid the segregation of the components. Moulds shall be chemically inert, not affecting the molten metal. 6Identification of sa