ISO INTERNATIONAL STANDARD 9147 First edition 1987-09-15 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEKAYHAPOAHAAOPTAHM3AUMAOCTAHAAPTM3ALMM Pig-irons - Definitionand classification Fontesbrutes--Definitionetclassification Referencenumber ISO.9147: 1987 (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 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 9147 was prepared by Technical Committee ISO/TC 25, Cast iron and pig iron. 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. ? InternationalOrganizationforStandardization,1987 Printed in Switzerland with ISO ISO 9147 :1987 (E) INTERNATIONALSTANDARD Pig-irons - Definition and classification Scope and field of application 3.2 In cases of doubt, the correct classification of the pig- iron into one of the classes indicated in table 2 shall be deter This International Standard defines pig-irons and the sub- mined by check analysis. The conditions for sampling, in- division of pig-irons into different classes. cludingtheconditionsforthenumber oftests,shall correspond to the conditions usually applied in cases of dispute for deliveries of disputed chemicat composition (see annex). 2 Definition Table 1 --- Limits of alloy elements for pig-iron pig-iron: An iron-carbon alloy with more than 2 % carbon and Element Limit1) with contents of other elements equal to or less than the limit % values given for them in table1. Manganese ≤ 30,0 Silicon < 8,0 It is intended for further processing in the molten condition into Phosphorus > 3,0 steel or cast-iron. Pig-iron is delivered either in the molten state Chromium ≤ 10,0 or in the solid state in primary forms such as pigs or similar solid Other alloying elements pieces, and granulates. in total2) < 10,0 1)Materials with higher contents are ferro-alloys. 3 Sub-division of pig-irons 2)In cases of doubt, all elements for which a minimum content is specified or whose content exceeds the lower limit given in table 2, 3.1 Pig-iron is sub-divided into the classes indicated in table 2 onthebasisofitschemicalcomposition. exception of carbon,silicon,manganese,phosphorus and chromium. 1 Provided bv IHS under ense with Iso