US$119.00 · In stock Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 2969-2020: Samarium oxide Status: Valid
Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
GB/T 2969-2020 | English | 119 |
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Samarium oxide
| Valid |
GB/T 2969-2020
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GB/T 2969-2008 | English | 239 |
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Samarium oxide
| Obsolete |
GB/T 2969-2008
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GB/T 2969-1994 | English | 199 |
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Samarium oxide
| Obsolete |
GB/T 2969-1994
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GB/T 2969-1982 | English | RFQ |
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Technical requirements of samarium oxide
| Obsolete |
GB/T 2969-1982
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Basic data Standard ID | GB/T 2969-2020 (GB/T2969-2020) | Description (Translated English) | Samarium oxide | Sector / Industry | National Standard (Recommended) | Classification of Chinese Standard | H65 | Classification of International Standard | 77.120.99 | Word Count Estimation | 6,650 | Date of Issue | 2020-09-29 | Date of Implementation | 2021-08-01 | Older Standard (superseded by this standard) | GB/T 2969-2008 | Regulation (derived from) | National Standard Announcement No. 20 of 2020 | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 2969-2020 Image
GB/T 2969-2020: Samarium oxide---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.
Samarium oxide
ICS 77.120.99
H65
National Standards of People's Republic of China
Replace GB/T 2969-2008
Samarium Oxide
2020-09-29 released
2021-08-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 2969-2008 "Samarium Oxide". Compared with GB/T 2969-2008, the main technical changes except for editorial changes
Change as follows.
---Added character brand (see 3.1 and 3.2);
---Modified the assessment index of the rare earth impurity praseodymium and total amount in the grade Sm2O3-4N, and adjusted the non-rare earth impurities Fe2O3 and SiO2
The evaluation indicators (see 3.2, 3.1 of the.2008 edition);
---Added the grade Sm2O3-3N5 (see 3.2);
---Modified some non-rare earth impurities of the grades Sm2O3-2N5 and Sm2O3-2N (see 3.2, 3.1 in the.2008 edition);
---Added the assessment index and calculation method of the main rare earth element Sm2O3 (see 3.2);
--- Modified rare earth impurities, deleted the denominator REO (see 3.2, 3.1 in the.2008 edition);
---The burning loss index is modified as the combined amount index of moisture and burning loss (see 3.2, 3.1 in the.2008 edition);
---Added the note that all tests are the state before burning after removing water (see 3.2);
---Modified the analysis method of the total content of rare earths (REO), and added that when the total amount of rare earths measured is more than 99%, the rare earths are calculated by the subtraction method.
The actual value of the total amount of soil (see 4.1.1, 4.1 in the.2008 edition);
---The calculation method of the relative purity of the main rare earth elements (Sm2O3/REO) has been increased, that is, the amount of the main rare earth elements/the total rare earth elements ×
100% (see 4.1.5);
--- Added the requirement that when the appearance inspection result does not conform to this standard, the batch of products is directly judged as non-conforming product (see 5.5.2).
This standard was proposed and managed by the National Rare Earth Standardization Technical Committee (SAC/TC229).
Drafting organizations of this standard. Jiangyin Jiahua New Material Resources Co., Ltd., Yixing Xinweilicheng Rare Earth Co., Ltd., Dingnan Dahua New Material Resources
Yuanyuan Co., Ltd., Ganzhou Chenguang Rare Earth New Materials Co., Ltd.
The main drafters of this standard. Xiao Rui, Shi Weidong, Xie Jianwei, Jin Yanhua, Zou Bin, Chen Yan, Wang Shouhong, Liang Bin, Yao Nanhong, Chen Yuehua, Liu Zhiyong,
Zhang Ruixiang.
The previous versions of the standard replaced by this standard are as follows.
---GB/T 2969-1982, GB/T 2969-1994, GB/T 2969-2008.
Samarium Oxide
1 Scope
This standard specifies the technical requirements, test methods, inspection rules, signs, packaging, transportation, storage and quality certificates of samarium oxide.
This standard applies to samarium oxide prepared by extraction or other methods for the production of metal samarium, magnetic materials, electronic components, etc.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 8170 Numerical rounding rules and the expression and determination of limit values
GB/T 12690 (all parts) Chemical analysis methods for non-rare earth impurities in rare earth metals and their oxides
GB/T 14635 Methods for chemical analysis of rare earth metals and their compounds Determination of total rare earth
GB/T 17803 Rare earth product designation method
GB/T 18115.5 Methods for chemical analysis of rare earth impurities in rare earth metals and their oxides. Lanthanum, cerium, praseodymium, neodymium, europium, gadolinium, terbium, samarium
Determination of the amount of dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yttrium
3 Technical requirements
3.1 Product Classification
The products are divided into five grades of Sm2O3-4N, Sm2O3-3N5, Sm2O3-3N, Sm2O3-2N5, Sm2O3-2N according to their chemical composition.
The method of designation should comply with GB/T 17803.
3.2 Chemical composition
The chemical composition of the product should meet the requirements of Table 1.If the buyer has special requirements, the supplier and the buyer can negotiate separately.
Table 1
Product brand
Character brand Sm2O3-4N Sm2O3-3N5 Sm2O3-3N Sm2O3-2N5 Sm2O3-2N
Corresponding to the original digital brand 061040 061035 061030 061025 061020
Chemistry
ingredient
(quality
fraction)/
REO, ≥ 99.0
Sm2O3/REO, ≥ 99.99
Sm2O3 margina
Impurities
content,
Rare earth
Impurities
Pr6O11 0.0010
Nd2O3 0.0035
Eu2O3 0.0010
Gd2O3 0.0010
Y2O3 0.0010
Other rare earths
Total impurity b 0.0025
99.0 99.0 99.0 99.0
99.95 99.9 99.5 99.0
Margin a Margin a Margin a Margin a
The total amount is 0.05, where
Eu2O3 is less than
0.0050
Total amount 0.1 Total amount 0.5 Total amount 1.0
......
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