1、DEUTSCHE NORM February 200417569Document comprises 3 pages. No part of this translation may be reproduced without the prior permission ofDIN Deutsches Institut fr Normung e.V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).Ferronio
2、biumTechnical delivery conditionsTranslation by DIN-Sprachendienst.In case of doubt, the German-language original should be consulted as the authoritative text.ICS 77.100Ferroniob Technische LieferbedingungenIn keeping with current practice in standards published by the International Organization fo
3、r Standardization(ISO), a comma has been used throughout as the decimal marker.ForewordThis standard has been prepared by the Normenausschuss Nichteisenmetalle (Nonferrous Metals StandardsCommittee), Technical Committee Ferrolegierungen.AmendmentsThis standard differs from the May 1982 edition in th
4、at it has been completely revised.Previous editionDIN 17569: 1982-05.1 ScopeThis standard specifies requirements for ferroniobium as used for steelmaking and foundry purposes.2 Normative referenceThis standard incorporates, by dated or undated reference, provisions from other publications. Thesenorm
5、ative references are cited at the appropriate places in the text and the titles of the publications are listedbelow. For dated references, subsequent amendments to or revisions of any of these publications apply tothis standard only when incorporated in it by amendment or revision. For undated refer
6、ences, the latestedition of the publication referred to applies.ISO 31-0 : 1992 Quantities and units Part 0: General principlesSupersedes May 1982edition.English price group 6www.din.dewww.beuth.de09.04 9572335Page 2DIN 17569 : 2004-023 Designation3.1 Standard designationThe designation of ferroniob
7、ium shall include either the name (symbol) or the material number.EXAMPLE:Designation of ferroniobium of grade FeNb63 (material number: 0.4740):Ferroniobium DIN 17569 FeNb63orFerroniobium DIN 17569 0.47403.2 Designation for order purposesEXAMPLE:Designation when ordering 5 000 kg of ferroniobium as
8、specified in this standard, of grade FeNb63 (materialnumber: 0.4740), particle size range (KG) 3 mm to 100 mm:5000 kg ferroniobium DIN 17569 FeNb63 KG 3-100or5000 kg ferroniobium DIN 17569 0.4740 KG 3-1004 Requirements4.1 CompositionThe composition of ferroniobium shall be as specified in table 1.Ta
9、ble 1: Composition of ferroniobium4.2 Particle sizeThe particle size range is to be specified when ordering. Table 2 gives guideline values, with any other rangesbeing subject to agreement.Table 2: Particle sizesMaterial Composition, as percentages by massname number Nb.1)Al CPSSiTaTiMin. 58 FeNb63
10、0.4740Max. 68 2,5 0,25 0,35 0,20 4,05 1,0 2,5Min. 63 FeNb65 0.4745Max. 70 1,5 0,15 0,15 0,08 3,00 0,5 0,41) The niobium content shall not vary by more than 2 % within a consignment.4.3 Form suppliedThe material shall be free from harmful matter and shall not emit any ionizing radiation (such radiati
11、on beingunderstood to be radiation higher than the background radiation at the time of receipt by the customer).Particle size range,in mmPermissible undersize, as a per-centage of quantity suppliedPermissible oversizeFrom 3 to 100 10Less than 3 10 % (m/m) of quantity supplied.Where the material is s
12、upplied inlumps, the maximum particle sizealong two or three dimensions of alump shall not exceed 1,15 times theupper value of the range.Page 3DIN 17569 : 2004-025 AnalysisThe method of analysis shall be at the manufacturers discretion, a state-of-the-art procedure being used incases of dispute.When
13、 rounding results, the specifications of clause 6 are to be observed.6 Rounding of resultsResults as calculated or observed are to be rounded following the rules set out in Annex B of ISO 31-0. The valueis to be rounded in one step to the same number of places as are specified in this standard.The r
14、esults shall be rounded as follows:a) if the figure following the last significant place is less than five, then the latter shall remain unchanged;b) if the figure following the last significant place is five or higher, the latter shall be increased by one.7 Marking, labelling, packaging, transport and storageUnless otherwise requested or agreed upon, marking, labelling and packaging shall be at the suppliers discre-tion.Ferroniobium, with or without packaging, shall be transported and stored so as to be protected against mois-ture, in accordance with relevant regulations.
