5445 International Standard OSI INTERNATIONAL ORGANIZATION FOR STANDARDIZATION MEKAYHAPOAHAR OPTAHM3AUMA NO CTAHAAPTM3ALWM·ORGANISATION INTERNATIONALE DE NORMALISATION Ferrosilicon - Specification and conditions of delivery Ferro-silicium -Spécifications et conditions de livraison First edition - 1980-12-01 ISO 5445-1980 (E) UDC 669.15'782-198 Ref. No. ISO 5445-1980 (E) Descriptors : ferroalloys, ferrosilicon, materials specifications, chemical composition, delivery, quality control, grain size. Price based on 4 pages No reproduction or networking permitted without license from IHS Not for Resale Foreword ISo (the International Organization for Standardization) is a woridwide federation of national standards institutes (Iso member bodies). The work of developing Inter- national 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 committees are circulated to the member bodies for approval before their acceptance as International Standards by the Iso Council. International Standard ISO 5445 was developed by Technical Committee ISO/TC 132, Ferroalloys, and was circulated to the member bodies in November 1979. Australia India Romania Austria Italy South Africa, Rep. of Brazil Japan Sweden Canada Libyan Arab Jamahiriya United Kingdom China Norway USA Czechoslovakia Pakistan USSR France Poland Yugoslavia Germany, F.R. Portugal No member body expressed disapproval of the document. ? International OrganizationforStandardization,1980 Printed in Switzerland Copyright International Organization for Standardization No reproduction or networking permitted without license from IHS Not for Resale ISO 5445-1980 (E) INTERNATIONALSTANDARD Ferrosilicon -- Specification and conditions of delivery Scope and field of application 5 Requirements This International Standard specifies requirements and condi- 5.1 Constitution of consignment tions of delivery for ferrosilicon usually supplied for steelmaking and foundry use. Ferrosilicon shall be delivered in consignments constituted by one of the following methods. 2 References ISO 565, Test sieves - Wovenmetalwire cloth and perforated 5.1.1 Tapped lot method plate - Nominal sizes of apertures. A consignment constituted by the tapped lot method consists Iso 3713, Ferroalloys - Sampling and preparation of samples of a ferrosilicon mass of one melt (or one part of a continuous General rules.1) tap). Iso 4139, Ferrosilicon - Determination of aluminium content Flame atomic absorption spectrometric method. 5.1.2 Graded lot method ISO 4158, Ferrosilicon, ferrosilicomanganese andferro- A consignment constituted by thegraded iot method consists silicochromium Determination of silicon content of a number of melts (or parts of continuous taps) of one Gravimetricmethod. ferrosilicon designation. The silicon content of the melts (or parts of continuous taps) Definition constituting the consignment shall not differ from each other bymorethan3%absolute 3.1 ferrosilicon : A master alloy of iron and silicon with a Iminimum silicon content of 8,o % by mass, and a maximum isilicon content of 95,o % by mass, obtained by reduction. 5.1.3 Blended lot method 4 Information for ordering A consignment constituted by the blended lot method consists Orders for ferrosilicon shall include the following information. ferrosilicon designation, which have been crushed to a particle size less than x mm2) and thoroughly mixed. a) Quantity. The content of the main constituent of the melts (or parts of b) Constitution of consignment. continuous taps) constituting the consignment may vary between the minimum and maximum limits specified for the Chemical composition in accordance with the designa- appropriateferrosilicon designati