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GB/T 4008-2024: Ferromanganese-silicon Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 4008: Historical versions
GB/T 4008-2024: Ferromanganese-silicon---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT4008-2024GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.100 CCS H 42 Replacing GB/T 4008-2008 Ferromanganese-silicon (ISO 5447.1980, Ferrosilicomanganese - Specification and conditions of delivery, MOD) Issued on: JUNE 29, 2024 Implemented on: JANUARY 01, 2025 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Terms and definitions... 6 4 Classification and designation... 7 5 Technical requirements... 7 6 Test methods... 9 7 Inspection rules... 10 8 Determination and re-inspection... 10 9 Packaging, storage, transportation, marking and quality certificate... 11 Appendix A (Informative) Comparison of structure numbers between this document and ISO 5447.1980... 12 Appendix B (Informative) Technical differences between this document and ISO 5447.1980 and their reasons... 13 Appendix C (Normative) Ferromanganese-silicon - Determination of boron content - Inductively coupled plasma atomic emission spectrometry... 15 Bibliography... 21ForewordThis document was drafted in accordance with the rules given in GB/T 1.1-2020, Directives for standardization - Part 1.Rules for the structure and drafting of standardizing documents. This document replaces GB/T 4008-2008 Ferromanganese-silicon. Compared with GB/T 4008-2008, in addition to structural adjustments and editorial changes, the main technical changes of this document are as follows. a) Adjust into three categories. micro-carbon ferromanganese-silicon, low- carbon ferromanganese-silicon and straight-carbon ferromanganese-silicon according to the different carbon content of ferromanganese-silicon (see Chapter 4); b) Modify the designation method of ferromanganese-silicon to the lower mass fraction of manganese content and silicon content (see Chapter 4; 3.1.1 of the 2008 edition); c) Adjust the number of designations of ferromanganese-silicon from 8 to 13 (see 5.1.1; 3.1.1 of the 2008 edition); d) Adjust the requirements for carbon and phosphorus content of ferromanganese-silicon (see Table 1; Table 1 of the 2008 edition); e) Modify the requirements for particle size (see 5.2.1; 3.2.1 of the 2008 edition); f) Add "Determination and re-inspection" (see Chapter 8); g) Add the inductively coupled plasma atomic emission spectrometry (see Appendix C). This document adopts ISO 5447.1980 Ferrosilicomanganese - Specification and conditions of delivery by modification. Compared with ISO 5447.1980, this document has lots of adjustments in structure. See Appendix A for a list of structure number changes between the two documents. This document contains many technical differences compared to ISO 5447.1980, which are indicated by a single vertical line (|) in the outer margin of the clauses involved. See Appendix B for a list of these technical differences and their causes. Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying patents. This document was proposed by China Iron and Steel Industry Association. Ferromanganese-silicon1 ScopeThis document specifies the classification, designation, technical requirements, test methods, inspection rules, packaging, storage, transportation and storage, marking and quality certificate of ferromanganese-silicon. This document applies to ferromanganese-silicon used as alloying agent, composite deoxidizer and desulfurizer in steel-making and casting, and as reducing agent in smelting medium carbon ferromanganese, low carbon ferromanganese and micro carbon ferromanganese.2 Normative referencesThe 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. GB/T 3650, The general rules for inspection packing storing transportation marking and certification of ferroalloy GB/T 4010, Ferroalloys sampling and preparation of samples for chemical analysis (GB/T 4010-2015, ISO 4552-1.1987, MOD) GB/T 5686.1, Ferromanganese, ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal - Determination of manganese content - Potentiometric method, titrimetric method after ammonium nitrate oxidation and titrimetric method after perchloric acid oxidation GB/T 5686.2, Ferromanganese, ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal - Determination of silicon content - Molybdenum blue spectrophotometric method, silicon potassium fluoride titrimetric method and perchloric acid dehydration gravimetric method GB/T 5686.4, Ferromanganese, ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal - Determination of phosphorus content - Molybdenum blue spectrophotometric method and bismuth phosphomolybdate blue spectrophotometric method GB/T 5686.5, Ferromanganese, ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal - Determination of carbon content - The The particle size of ferromanganese-silicon shall be tested in accordance with the provisions of GB/T 13247.7 Inspection rules7.1 Batch Ferromanganese-silicon shall be batched according to the designation content limit requirements; the manganese content fluctuation range shall not exceed 3%; the comprehensive sampling and test results of the same batch shall not be lower than the lower limit requirements of the designation. 7.2 Sample collection and preparation Collect and prepare samples for chemical analysis of ferromanganese-silicon in accordance with the provisions of GB/T 4010. 7.3 Quality inspection and acceptance The quality inspection and acceptance of ferromanganese-silicon shall comply with the provisions of GB/T 3650. 7.4 Sampling and acceptance of particle size The sampling and acceptance of ferromanganese-silicon particle size shall comply with the provisions of GB/T 13247.8 Determination and re-inspection8.1 The quality of ferromanganese-silicon products shall be inspected by the supplier's quality and technical department, and the inspection results shall be determined according to the technical requirements. 8.2 If the buyer has any objection to the product quality, it shall raise the issue to the supplier within 20 working days from the date of receipt of the goods, and both parties shall jointly re-sample and re-inspect, and determine the quality based on the re- inspection results. 8.3 If arbitration is required, the supplier and the buyer shall negotiate and jointly select an arbitration institution, and submit the re-sampled samples to the arbitration institution, and determine the quality by the results of the arbitration institution. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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