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GB/T 10116-2007: Ammonium paratungstate
Status: Valid GB/T 10116: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 10116-2007 | English | 159 |
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3 days [Need to translate]
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Ammonium paratungstate
| Valid |
GB/T 10116-2007
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| GB/T 10116-1988 | English | 199 |
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Ammonium paratungstate
| Obsolete |
GB/T 10116-1988
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PDF similar to GB/T 10116-2007
Basic data | Standard ID | GB/T 10116-2007 (GB/T10116-2007) | | Description (Translated English) | Ammonium paratungstate | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H63 | | Classification of International Standard | 77.150.99 | | Word Count Estimation | 6,674 | | Date of Issue | 2007-11-23 | | Date of Implementation | 2008-06-01 | | Older Standard (superseded by this standard) | GB/T 10116-1988 | | Quoted Standard | GB/T 1479; GB/T 3249; GB/T 6324; GB/T 5060; GB/T 5314 | | Regulation (derived from) | China National Standard Approval Announcement2007 No.12 (Total No.112) | | 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 requirements for ammonium paratungstate, test methods, inspection rules, signs, packaging, transport, storage and purchase order (or contract) content. This standard applies to the production of tungsten carbide powder metallurgy products used in products such as ammonium paratungstate. | GB/T 10116-2007: Ammonium paratungstate---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.
Ammonium paratungstate
ICS 77.150.99
H63
National Standards of People's Republic of China
Replacing GB/T 10116-1988
Ammonium paratungstate
Posted 2007-11-23
2008-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 10116-1988 "paratungstate."
This standard compared with GB/T 10116-1988, the main changes are as follows.
--- Canceled the lower grades of APT-2 grades;
--- Increase the physical performance requirements;
--- APT-0 grades increased impurity elements of Cd control requirements, adjust the Mg, Mn, Ni, Sb, S, Sn six impurity element
index;
--- APT-1 grades increased impurity elements of Cd control requirements, adjust the Mg, Mo, Ni impurity elements three indicators;
--- Requiring a product to be sieved should be able to screen all through a pore size of 250μm.
The standard proposed by China Nonferrous Metals Industry Association.
This standard Nonferrous Metals by the National Standardization Technical Committee.
This standard by the Zigong Cemented Carbide Co., Ltd. is responsible for drafting.
The main drafters of this standard. on behalf of the S & P.
This standard replaces the standards previously issued as follows.
--- GB/T 10116-1988.
Ammonium paratungstate
1 Scope
This standard specifies the ammonium paratungstate requirements, test methods, inspection rules, marking, packaging, transportation, storage and purchase order (or contract)
content.
This standard applies to the production of ammonium paratungstate and tungsten carbide products, such as powder metallurgy products used.
2 Normative references
The 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.
Determination of GB/T 1479 metal powder bulk density - Part 1. funnel method
GB/T 3249 Determination of refractory metal compound powder size and method of Fisher method
GB/T 4324 (all parts), chemical analysis of tungsten
Determination of GB/T 5060 metal powder bulk density - Part 2. Scott capacity meter method
GB/T 5314 sampling method powder metallurgy
3 Requirements
3.1 Categories
Products by the chemical composition of the impurity content requirements, divided into APT-0, APT-1 two grades.
3.2 Chemical composition
Chemical composition of the product shall comply with the requirements in Table 1.
3.3 size
Fisher average particle size of the product shall be in accordance with Table 2.
3.4 Bulk Density
Other physical properties of the bulk density of the product is determined by the supply and demand sides negotiated.
3.5 sieved
The product should be sieved should be all through a pore size of 250μm sieve.
3.6 appearance quality
Should as a white crystalline product, color should be uniform. Products should be no visual evidence of inclusions and caking.
Test Method 4
4.1 Analysis of the chemical composition of the product according to the provisions of GB/T 4324 will be.
Fisher average particle size of 4.2 in accordance with the provisions of GB/T 3249 will be.
Bulk density was measured according to the provisions of item 4.3 GB/T 1479 or GB/T 5060 will be.
4.4 Product screened by both parties agree manner.
4.5 appearance quality product with a visual inspection.
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