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GB/T 3457-2013 (GBT 3457-2013)

Chinese Standard: 'GB/T 3457-2013'
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GB/T 3457-2013English139 Add to Cart Days<=3 Tungstic oxide GB/T 3457-2013 Valid GB/T 3457-2013
GB/T 3457-2013Chinese14 Add to Cart <=1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]

   

BASIC DATA
Standard ID GB/T 3457-2013 (GB/T3457-2013)
Description (Translated English) Tungstic oxide
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H63
Classification of International Standard 77.150
Word Count Estimation 7,735
Older Standard (superseded by this standard) GB/T 3457-1998
Quoted Standard GB/T 1479.1; GB/T 3249; GB/T 5314; GB/T 4324.1; GB/T 4324.2; GB/T 4324.3; GB/T 4324.4; GB/T 4324.5; GB/T 4324.6; GB/T 4324.7; GB/T 4324.8; GB/T 4324.9; GB/T 4324.10; GB/T 4324.11; GB/T 4324.12; GB/T 4324.13; GB/T 4324.14; GB/T 4324.15; GB/T 4324.16; GB/T
Drafting Organization Chenzhou Diamond Tungsten Products Co., Ltd.
Administrative Organization National Nonferrous Metals Standardization Technical Committee
Regulation (derived from) National Standards Bulletin 2013 No. 23
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the tungsten oxide requirements, test methods, inspection rules and signs, packaging, transportation, storage, quality certificate and contract (or order form) content. This standard applies to tungsten trioxide (referred to as yel

GB/T 3457-2013
Tungstic oxide
ICS 77.150
H63
National Standards of People's Republic of China
Replacing GB/T 3457-1998
Tungsten oxide
Issued on. 2013-11-27
2014-08-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 3457-1998 "tungsten oxide", as compared with the present standard GB/T 3457-1998, the main changes are as follows.
--- Increasing the purple tungsten oxide grades. WO2.72-0, WO2.72-1;
--- Tungsten oxide increases the purple grade. Super Grade;
--- Cancellation lower grades WO3-2, WOx-2 grades;
--- WO3-0, WOx-0 adjusted As, Fe, Mn, P index of impurity elements;
--- WO3-1, WOx-1 adjusted As, Fe, Mo, Na, P impurity element five indicators;
--- Purple tungsten oxide increases the chemical composition, phase composition and appearance quality requirements;
--- Delete the original standard in Appendix A.
This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized.
This standard is mainly drafted by. Chenzhou Diamond Tungsten Products Co., Ltd., Xiamen Golden Egret Special Alloy Co., Ltd., Xiamen Tungsten Shares
Ltd., Zhuzhou Cemented Carbide Group Limited.
The main drafters of this standard. Jiangwen Wei, Li Chun-hai, Liang Weidong, Lin Gaoan, Shou-wide, even paper money, Liaozhang Cong, Fan Zhirui to Zhihong.
This standard replaces the previous version of the release of the case.
--- GB/T 3457-1982;
--- GB/T 3457-1998.
Tungsten oxide
1 Scope
This standard specifies the tungsten oxide requirements, test methods, inspection rules and signs, packaging, transportation, storage, quality certificate and contract (or
Orders) content.
This standard applies to tungsten trioxide (referred to as the yellow tungsten), tungsten blue oxide (referred to as the blue tungsten), purple tungsten oxide (referred to as the purple tungsten).
2 Normative references
The 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 4324 (all parts), chemical analysis of tungsten
GB/T 5314 sampling powder metallurgy method
3 Requirements
Grade 3.1
Tungsten oxide grades and grade are shown in Table 1.
Table 1 grades and grade tungsten oxide
Acronym grade grade
Huang tungsten
WO3-0 Premium
WO3-1 a
Blue tungsten
WOx-0 grade
WOx-1 a
Purple tungsten
WO2.72-0 Premium
WO2.72-1 a
3.2 Chemical composition
Tungsten oxide chemical composition shall comply with the requirements of Table 2.
3.3 phase
Phase composition of tungsten blue, WO2.72 should not exceed 5%. Phase composition of purple tungsten, WO2.72≥95%.
3.4 size
The product's size negotiated fee determined by supply and demand, the product should be through 180μm (80 mesh) sieve.
Related standard: GB/T 3460-2017    GB/T 4182-2017
Related PDF sample: GB/T 3458-2006    GB/T 4325.5-2013