BS EN ISO 6501:2020 pdf – Ferronickel — Specification and delivery requirements.
1 Scope This document specifies the technical delivery requirements for the various forms of ferronickel (ingots, pieces and shot) usually supplied for steel making and foundry use. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 6352, Ferronickel — Determination of nickel content — Dimethylglyoxime gravimetric method ISO 8049, Ferronickel shot — Sampling for analysis ISO 8050, Ferronickel ingots or pieces — Sampling for analysis ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical composition 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https:// www .iso .org/ obp — IEC Electropedia: available at http:// www .electropedia .org/ 3.1 ferronickel master alloy of iron and nickel having a nickel content equal to or greater than a mass fraction of 15 % and less than a mass fraction of 80 %, obtained from oxide ores or other nickel-bearing materials 3.2 K number that represents the lowest nickel content that is part of the lot to be delivered 3.3 splitting limit maximum acceptable difference between analytical results of nickel or other element agreed by two parties (buyer and seller) 3.4 lot discrete and defined quantity of ferronickel ingots, pieces or shots answering to the same quality specification (chemical composition and physical characteristics)
4 Information for ordering Orders for ferronickel shall include the following information: a) quantity; b) chemical composition, according to the designations in Tables 1 and 2; c) form of delivery, according to 5.2; d) delivery requirements; e) size distribution; f) requirements for the analysis report, packing, etc., as appropriate; g) transportation and storage requirements. 5 Requirements 5.1 Chemical composition 5.1.1 The chemical compositions of the various types of ferronickel are specified in Tables 1 and 2. 5.1.2 In Table 1, only the nickel content is given.
5.1.4 The designation of ferronickel product is given with the combination of the elements of Tables 1 and 2. EXAMPLE FE Ni 30 HC MP MS HSi, where L = low, M = medium and H = high. Other examples of a combination of Tables 1 and 2 are given in Annex A. 5.1.5 The chemical compositions given in Tables 1 and 2 are subject to the precision of the methods of sampling and analysis for ferronickel. 5.2 Form of delivery and formation of lots 5.2.1 General Ferronickel may be delivered as agreed between the supplier and the purchaser in various forms, e.g. ingots, pieces or shot. The delivered lots, except by special agreement, shall have a minimum tonnage of 5 t. 5.2.2 Ferronickel in ingots Ingots may be supplied notched or unnotched. Their maximum mass is 100 kg. Their thickness may be within a range of 30 to 150 mm. Their length shall not exceed 1 100 mm. Lots may be formed in two different ways: — from material stocked individually from each tapping operation; — by blending several heats; in this case, except by special agreement, heats shall be selected in a nickel content range from K to (K + 1) %, K being a whole number. 5.2.3 Ferronickel in pieces Pieces are either cast or cut from ingots. A lot is formed from only one of these two categories of pieces. The maximum dimension is between 25 and 100 mm. Within a lot, the sizes of pieces shall be uniform. Lots may be formed in two different ways: — from material stocked individually from each tapping operation; — by blending several heats; in this case, except by special agreement, heats shall be selected in a nickel content range from K to (K + 1) %, K being a whole number.