YS/T 548-2007 English PDFUS$229.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. YS/T 548-2007: High-pure niobium pentoxide Status: Valid YS/T 548: Historical versions
Basic dataStandard ID: YS/T 548-2007 (YS/T548-2007)Description (Translated English): High-pure niobium pentoxide Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended) Classification of Chinese Standard: G13 Classification of International Standard: 71.060.20 Word Count Estimation: 7,749 Date of Issue: 2007-11-14 Date of Implementation: 2008-05-01 Older Standard (superseded by this standard): YS/T 548-2006 Quoted Standard: GB/T 3249; GB/T 5060; GB/T 5314; GB/T 13390; GB/T 15076 Regulation (derived from): NDRC Notice No. 77 of 2007 Issuing agency(ies): National Development and Reform Commission Summary: This standard provides high-purity niobium pentoxide requirements, test methods, test rules, marking, packaging, transportation, storage and purchase order (or contract) content. This standard applies to liquid liquid extraction method were high-purity niobium pentoxide. Products for the production niobate crystal and optical glass additives for use. YS/T 548-2007: High-pure niobium 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.High-pure niobium pentoxide ICS 71.060.20 G13 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 548-2006 High-purity niobium pentoxide Posted 2007-11-14 2008-05-01 implementation National Development and Reform Commission issued ForewordInstead of the standard YS/T 548-2006 "high-purity niobium pentoxide" (formerly GB/T 10578-2003). Compared with this standard YS/T 548-2006, the main changes are as follows. --- All grades product by deleting the requirement Cl impurity element, an increase of impurity elements Sb requirements; --- On the part of impurities in the original standard grade products specified have been adjusted. This standard by the National Standardization Technical Committee of non-ferrous metals and centralized. This standard by the Jiujiang non-ferrous metal smelter is responsible for drafting. This standard by the Ningxia Orient Tantalum Industry Co., Ltd. participated in the drafting. The main drafters. Zhang Hao, Wang Wei, Zhangjiang Feng, Zhou Huogen, Zhengpei Sheng, Kuang Guozhen. This standard by the National Standardization Technical Committee is responsible for interpretation of non-ferrous metals. This standard replaces the standards previously issued as follows. --- YS/T 548-2006. High-purity niobium pentoxide1 ScopeThis standard specifies the high-purity niobium pentoxide requirements, test methods, inspection rules, marking, packaging, transportation, storage and purchase order (or close Same) content. This standard applies to liquid - liquid extraction method were high-purity niobium pentoxide. Products for the production niobate crystal and optical glass as additive And other purposes.2 Normative referencesThe following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 3249 Determination of refractory metal compound powder size and method of Fisher method Determination of GB/T 5060 metal powder bulk density Part II. Scott capacity meter method GB/T 5314 sampling method powder metallurgy 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 3.1.1 chemical composition is divided into four grades. FNb2O5-048, FNb2O5-045, FNb2O5-04, FNb2O5-035. 3.1.2 Example grades. expressed powder product Nb2O represents niobium pentoxide formula Purity of the product is represented 99.998% 3.2 Chemical composition Chemical composition of various grades of products should meet the requirements in Table 1. Nb2O5 content (mass fraction) is 100% minus Table 1 except F real Measured impurity content (mass fraction). 3.3 Physical properties When the buyer has requested, the supplier shall provide an average product particle size, bulk density, specific surface area of the measured data. 3.4 appearance quality Product as a white powder. Visual products without visible inclusions. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of YS/T 548-2007_English be delivered?Answer: Upon your order, we will start to translate YS/T 548-2007_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of YS/T 548-2007_English with my colleagues?Answer: Yes. The purchased PDF of YS/T 548-2007_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version YS/T 548-2007?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version YS/T 548-2007 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
