Standard No.:	GB/T 4139-2012
English Name:	Ferrovanadium
Chinese Name:	钒铁
Chinese Classification:	H42    Iron alloy
Professional Classification:	GB    National Standard
Source Content Issued by:	AQSIQ;SAC
Issued on:	2012-12-31
Implemented on:	2013-10-1
Status:	valid
Superseding:	GB/T 4139-2004 Ferrovanadium
Target Language:	English
File Format:	PDF
Word Count:	6000 words
Translation Price(USD):	180.0
Delivery:	via email in 1 business day

Ferrovanadium 1 Scope This standard specifies the requirements, test methods, inspection rules, packaging, storage, transportation, marking and quality certification of ferrovanadium. This standard is applicable to ferrovanadium as an additive for vanadium in steel or alloy materials. 2 Normative references The following referenced documents are indispensable for the application 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 Ferroallys sampling and preparation of samples for chemical analysis GB/T 8704.1 Ferrovanadium - Determination of carbon content - The infrared absorption method and the gasometric method GB/T 8704.3 Ferrovanadium - Determination of sulfur content - The infrared absorption method and the combustion-neutralization titration method GB/T 8704.5 Ferrovanadium - Determination of vanadium content - The ammonium ferrous sulfate titrimetric method and the potentiometric titrimetric method GB/T 8704.6 Ferrovanadium - Determination of silicon content - The sulphuric acid dehydration gravimetric method GB/T 8704.7 Ferrovanadium - Determination of phosphorus content - The molybdenum blue photometric method GB/T 8704.8 Ferrovanadium - Determination of aluminium content - The chromazurol S spectrophotometric method and EDTA titrimetric method GB/T 8704.9 Ferrovanadium - Determination of manganese content - The potassium periodate oxidation photometric method and flame atomic absorption spectrometric method GB/T 13247 Methods for sampling and testing the grain size of ferroalloys products 3 Requirements 3.1 Grade and chemical composition 3.1.1 Ferrovanadium is divided into 9 grades according to the contents of vanadium and impurities, and the chemical composition shall be as specified in Table 1.

Foreword i 1 Scope 2 Normative references 3 Requirements 4 Test methods 5 Inspection rules 6 Packaging, storage, transportation, marking and quality certification Annex A (Informative) Comparison between clause numbers in this standard and those in ISO 5451：1980 Annex B (Informative) Technical differences between this standard and ISO 5451: 1980 and their justifications