5449 International Standard (TSO Ferrosilicochromium -- Specification and conditions of delivery Ferro-silico-chrome -Spécifications et conditions de livraison First edition - 1980-12-15 ISO 5449-1980 (E) UDC 669.15'26'782-198 Ref.No. 1SO 5449-1980 (E) Descriptors:ferroalloys,ferrosilicon,ferrochromium,materialsspecifications, , chemical composition, delivery, quality control, grain size. Price based on 3 pages No reproduction or networking permited without license from IHS Foreword ISO(the International OrganizationforStandardization)isaworldwidefederation of national standards institutes (Iso member bodies). The work of developing Inter- national Standards iscarriedoutthroughiSotechnicalcommittees.Everymember 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 theIso Council. International Standard ISO 5449 was developed by Technical Committee ISO/TC 132, Ferroalloys, and was circulated to the member bodies in November 1979. It has been approved by the member bodies of the following countries : Australia Germany,F.R. Portugal Austria India Romania Brazil Italy South Africa, Rep. of Bulgaria Japan Sweden Canada Libyan Arab Jamahiriya United Kingdom China Norway USSR Czechoslovakia Pakistan Yugoslavia France Poland Thememberbodyofthefollowingcountryexpresseddisapprovalofthedocumenton technical grounds : USA @International Organization for Standardization,1980 Printed in Switzerland Copyright International Organization for Standardization No reproduction or networking permited without license from IHS Not for Resale,04/28/200707:44:36MD 1/9972545001 1SO5449-1980 (E) INTERNATIONALSTANDARD Ferrosilicochromium - Specification and conditions of delivery 1 Scope and field of application d)Particle size ranges in accordance with the classes given in table 2. This International Standard specifies requirements and con- ditions of delivery for ferrosilicomanganese usually supplied for e) Necessary requirements for analysis reports, packing, steelmaking and foundry use. etc., as appropriate. 2 References Requirements iso565,Test sieves-Woven metalwire cloth and perforated plate - Nominal sizes of apertures. 5.1 Constitution of consignment Iso3713,Ferroalloys -Sampling and preparationof samples Generalrules.1] Ferrosilicochromium shall bedelivered in consignments con stituted by one of the following methods. Iso4139,Ferrosilicon--Determinationofaluminiumcontent -Flameatomicabsorption spectrometricmethod. 5.1.1 Tapped lot method Iso4140,Ferrochromiumandferrosilicochromium Deter- mination of chromium content -- Potentiometric method. A consignment constituted by the tapped lot method consists of a ferrosilicochromium mass of one melt (or one part of a con- ISO4158, Ferrosilicon,ferrosilicomanganese and ferro- tinuous tap). silicochromium Determination of silicon content Gravimetric method. 5.1.2Gradedlotmethod A consignment constituted by the graded lot method consists 3Definition ofanumberof melts(orpartsof continuous taps)of one 3.1 ferrosilicochromium : ferrosilicochromiumdesignation, A master alloy ofiron, chromium and silicon with chromium contents in the range Thechromiumandsiliconcontentofthemelts(orpartsofcon from 20,0 to 65,0 % by mass and silicon contents in the range tinuous taps) constituting the consignment shall not differ from from 10,0 to 60,0 % by mass, obtained by reduction. each other by more than 3 % absolute. 4 Information for ordering 5.1.3 Blended lot method Ordersforferrosilicochromium shall includethefollowing infor- A consignment constituted by the blended lot method consists mation. ofanumberofmelts(orpartsof continuoustaps)of one ferrosilicochromium designation,