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YS/T 427-2012 English PDFUS$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. YS/T 427-2012: Tantalum pentoxide Status: Valid YS/T 427: Evolution and historical versions
Basic data
YS/T 427-2012: Tantalum pentoxide---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Tantalum pentoxide ICS 77.150.99 H63 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 427-2000 Tantalum pentoxide Issued on. 2012-11-07 2013-03-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released ForewordThis standard was drafted in accordance with GB/T 1.1-2009 given rules. Instead of the standard YS/T 427-2000 "tantalum pentoxide." The standards are compared with the YS/T 427-2000 main changes as follows. --- FTa2O5-1 grades impurity element specified by the 12 kinds increased to 17 kinds; --- FTa2O5-2 grades impurity element specified by the 12 kinds increased to 17 kinds; Impurity elements --- FTa2O5-3 grades prescribed by the eight kinds increased to 15 kinds; --- This standard increased detection method Ta2O5 powder Fisher particle size. This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized. This standard is drafted by. Ningxia Orient Tantalum Industry Co., Ltd., Guangdong Zhiyuan New Materials Co., Ltd, China Nonferrous Metals Industry Standards and Metrology Institute for Quality. The main drafters of this standard. Guo Tao, Liu Yanru, Wang Li, Zhang Jing, Shi Xiaojun, Zhang Yanan Zhong Yue Alliance, Zhang Xianming, Zhangjiang Feng. This standard superseded standard previously issued as follows. --- YS/T 427-2000. Tantalum pentoxide1 ScopeThis standard specifies the tantalum pentoxide requirements, test methods, inspection rules, marking, packaging, transportation, storage, quality certificate and contract (Or orders) content. This standard applies to liquid - liquid extraction method were tantalum pentoxide, for the production of tantalum powder and tantalum carbide bars and other purposes.2 Normative referencesThe following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Determination of GB/T 1479.1 metal powder bulk density - Part 1. funnel method GB/T 3249 Determination of metals and their compounds Fisher particle size powder GB/T 5314 sampling powder metallurgy method GB/T 13390 metal powder specific surface area by nitrogen adsorption GB/T 15076 (all parts), chemical analysis of tantalum and niobium3 Requirements3.1 Categories Product chemical composition is divided into three grades. FTa2O5-1, FTa2O5-2, FTa2O5-3. 3.2 Chemical composition Product impurity element should be in accordance with Table 1, Ta2O5 content of 100% minus the impurities listed in Table 1, the measured content. Table 1 % Grades FTa2O5-1 FTa2O5-2 FTa2O5-3 Main content (mass fraction) not less than Ta2O5 99.6 99.4 99.0 Impurity elements (mass fraction) no greater than Nb 0.0030 0.020 0.10 Ti 0.0010 0.0020 0.0030 W 0.0010 0.0020 0.0050 Mo 0.0010 0.0020 0.0050 Cr 0.0010 0.0020 0.0030 Mn 0.0010 0.0020 0.0030 Fe 0.0040 0.010 0.030 Ni 0.0010 0.0020 - ...... |