GB/T 39125-2020 English PDF

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GB/T 39125-2020: Cerium-magnesium alloys
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39125-2020	119	Add to Cart	3 days	Cerium-magnesium alloys	Valid

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Basic data

Standard ID: GB/T 39125-2020 (GB/T39125-2020)
Description (Translated English): Cerium-magnesium alloys
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H65
Classification of International Standard: 77.120.99
Word Count Estimation: 6,643
Date of Issue: 2020-10-11
Date of Implementation: 2021-09-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 39125-2020: Cerium-magnesium alloys

---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.
Cerium-magnesium alloys ICS 77.120.99 H65 National Standards of People's Republic of China Cerium Magnesium Alloy 2020-10-11 released 2021-09-01 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 was proposed and managed by the National Rare Earth Standardization Technical Committee (SAC/TC229). Drafting organizations of this standard. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Baotou Rare Earth Research Institute, Hunan Rare Earth Metal Materials Research Institute, Nonferrous Metal Technology and Economic Research Institute. The main drafters of this standard. Zhang Deping, Meng Jian, Duan Taicheng, Liu Rongli, Deng Yuefeng, Wang Xiaoqing, Zhao Haidong, Xie Ping, Li Yangde, Niu Xiaodong, Sun Wei, Qiu Xin, Tian Zheng, Wang Shuying. Cerium Magnesium Alloy

1 Scope

This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and quality certificates of cerium-magnesium alloys. This standard applies to cerium-magnesium alloys produced by electrolysis, melt blending and reduction methods, and is mainly used as additives for high-performance rare earth magnesium alloys.

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 12690.1 Chemical analysis methods for non-rare earth impurities in rare earth metals and their oxides Part 1.Determination of carbon and sulfur content High frequency-infrared absorption method GB/T 17803 Rare earth product designation method GB/T 29916 Methods for chemical analysis of lanthanum-magnesium alloys

3 Technical requirements

3.1 Product Classification The products are divided into six grades. CeMg-30A, CeMg-30B, CeMg-25A, CeMg-25B, CeMg-20A, CeMg-20B according to their chemical composition. The expression method of the product brand shall comply with the provisions of 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. a The balance is expressed as the total amount minus the content of rare earth cerium and impurities. b Rare earth impurities refer to all rare earth elements except Pm, Ce, and Sc. ......

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