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GB/T 20165-2025: Rare earth polishing powder
Status: Valid GB/T 20165: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 20165-2025 | English | 369 |
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4 days [Need to translate]
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Rare earth polishing powder
| Valid |
GB/T 20165-2025
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| GB/T 20165-2012 | English | 189 |
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3 days [Need to translate]
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Rare earth polishing powder
| Valid |
GB/T 20165-2012
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| GB/T 20165-2006 | English | 239 |
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2 days [Need to translate]
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Rare earth polishing powder
| Obsolete |
GB/T 20165-2006
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PDF similar to GB/T 20165-2025
Standard similar to GB/T 20165-2025 GB/T 20892 GB/T 20168 GB/T 20169 Basic data | Standard ID | GB/T 20165-2025 (GB/T20165-2025) | | Description (Translated English) | Rare earth polishing powder | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H65 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 18,177 | | Date of Issue | 2025-08-01 | | Date of Implementation | 2026-02-01 | | Older Standard (superseded by this standard) | GB/T 20165-2012 | | Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China | GB/T 20165-2025: Rare earth polishing powder---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT20165-2025
ICS 77.120.99
CCSH65
National Standard of the People's Republic of China
Replaces GB/T 20165-2012
Rare earth polishing powder
Released on August 1, 2025
Implementation on February 1, 2026
State Administration for Market Regulation
The National Standardization Administration issued
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 20165-2012 "Rare earth polishing powder". Compared with GB/T 20165-2012, except for structural adjustments and editorial
In addition to the modifications, the main technical changes are as follows.
a) The scope of application of this document has been changed (see Chapter 1, Chapter 1 of the.2012 edition);
b) Added brand names and brand name representation methods (see Chapter 4);
c) The digital brand names have been deleted (see Table 1 of the.2012 edition);
d) Added 14 characters for the brand name (see 4.1);
e) Deleted true density and phase composition (see 4.1 of the.2012 edition);
f) The requirements for specific radioactivity have been deleted (see 4.2 of the.2012 edition);
g) Added the requirements and test methods for La2O3/REO and Pr6O11/REO in the chemical composition (see 5.1 and 6.1.3);
h) Added requirements and test methods for bulk density and specific surface area (see 5.2, 6.2.2, and 6.2.3);
i) The requirements and test methods for pH value have been changed (see 5.3, 6.3, and 4.3, 5.6 of the.2012 edition);
j) The requirements for appearance quality have been changed (see 5.4, 4.4 of the.2012 edition);
k) Sampling and sample preparation have been changed (see 7.4, 6.4 of the.2012 edition).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed and coordinated by the National Rare Earth Standardization Technical Committee (SAC/TC229).
This document was drafted by. Baotou Tianjiao Qingmei Rare Earth Polishing Powder Co., Ltd., Sichuan Leshan Ruifeng Metallurgical Co., Ltd., Baotou Mingxin
Technology Co., Ltd., Gansu Rare Earth New Materials Co., Ltd., Zibo Baotou Steel Lingzhi Rare Earth High-tech Co., Ltd., Nonferrous Metals Technology
Economic Research Institute Co., Ltd., China Northern Rare Earth (Group) High-Tech Co., Ltd., Baotou Rare Earth Research Institute, Baotou Huamei Rare Earth
Gaoke Co., Ltd., Guorui Kechuang Rare Earth Functional Materials (Ganzhou) Co., Ltd., and Xiongan Rare Earth Functional Materials Innovation Center Co., Ltd.
The main drafters of this document are. Du Yue, Yang Guosheng, Huang Shaodong, Liu Lutao, Feng Xinrui, Ji Daiming, Shi Junlong, Rao Xiangdong, Song Guanyu, Li Bingwei,
Li Tingting, Chen Chuandong, Xu Guohua, Wang Weisheng, Zhang Zhenyu, Xu Siyu, Meng Zhijun, Xie Hao, Wu Cenyang, Cheng Lei, Hu Qun, Song Yujia, Ye Xinyu,
Xiao Fusheng.
This document was first published in.2006, revised for the first time in.2012, and this is the second revision.
Rare earth polishing powder
1 Scope
This document specifies the grades and designation methods, technical requirements, test methods, inspection rules and marking, packaging, transportation, and other aspects of rare earth polishing powder.
Transmit, store and carry documents.
This document applies to powder products with certain polishing properties that are made from cerium-based rare earth compounds through chemical processing.
Note. Rare earth polishing powder is mainly used in cover glass (including mobile phone back cover), hard disk glass substrate, optical devices, crystal, rhinestone jewelry, liquid crystal glass substrate, etc.
Surface polishing.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the latest version (including all amendments) applies to this document.
This document.
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 8170 Rules for rounding off values and expression and determination of limit values
GB/T 12690.2 Chemical analysis of non-rare earth impurities in rare earth metals and their oxides - Part 2.Ignition temperature of rare earth oxides
Determination of quantity by gravimetric method
GB/T 12690.3 Chemical analysis of non-rare earth impurities in rare earth metals and their oxides Part 3.Moisture in rare earth oxides
Determination of quantity by gravimetric method
GB/T 14635-2020 Chemical analysis methods for rare earth metals and their compounds—Determination of total rare earth content
GB/T 18115.2 Chemical analysis of rare earth impurities in rare earth metals and their oxides Part 2.Lanthanum, praseodymium, neodymium, samarium,
Determination of the amount of europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yttrium
GB/T 20166.1 Chemical analysis methods for rare earth polishing powders Part 1.Determination of cerium oxide content Titration method
GB/T 20166.2 Chemical analysis methods for rare earth polishing powders Part 2.Determination of fluorine content - Ion selective electrode method
GB/T 20167 Test methods for physical properties of rare earth polishing powders - Determination of polishing loss and scratches - Gravimetric method
GB/T 20170.1 Test methods for physical properties of rare earth metals and their compounds - Determination of particle size distribution of rare earth compounds
GB/T 20170.2 Test methods for physical properties of rare earth metals and their compounds - Determination of specific surface area of rare earth compounds
GB/T 31057.1 Tests for physical properties of granular materials - Part 1.Measurement of bulk density
GB 39176 Packaging, labeling, transportation and storage of rare earth products
GB/T 40795.2 Chemical analysis methods of lanthanum, cerium and their compounds - Part 2.Determination of rare earth content
JJG119-2018 Laboratory pH (Acidity) Meter
3 Terms and Definitions
The terms and definitions defined in GB/T 20167 apply to this document.
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