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GB/T 4138-2024: Rare earth ferrosilicon magnesium alloy
Status: Valid GB/T 4138: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 4138-2024 | English | 199 |
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3 days [Need to translate]
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Rare earth ferrosilicon magnesium alloy
| Valid |
GB/T 4138-2024
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| GB/T 4138-2015 | English | 279 |
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3 days [Need to translate]
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Rare earth ferrosilicon magnesium alloy
| Obsolete |
GB/T 4138-2015
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| GB/T 4138-2004 | English | 199 |
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Rare earth ferrosilicon magnesium alloy
| Obsolete |
GB/T 4138-2004
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| GB/T 4138-1993 | English | 199 |
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2 days [Need to translate]
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Rare-eatrh ferrosilicomagnesium
| Obsolete |
GB/T 4138-1993
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PDF similar to GB/T 4138-2024
Basic data | Standard ID | GB/T 4138-2024 (GB/T4138-2024) | | Description (Translated English) | Rare earth ferrosilicon magnesium alloy | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H65 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 10,182 | | Date of Issue | 2024-04-25 | | Date of Implementation | 2024-11-01 | | Older Standard (superseded by this standard) | GB/T 4138-2015 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 4138-2024: Rare earth ferrosilicon magnesium alloy---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.
ICS 77:120:99
CCSH65
National Standards of People's Republic of China
Replaces GB/T 4138-2015
Rare Earth Magnesium Silicon Ferroalloy
Released on 2024-04-25
2024-11-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Foreword
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 4138-2015 "Rare Earth Magnesium Ferrosilicon Alloys": Compared with GB/T 4138-2015, except for structural adjustments and editing
In addition to the changes in performance, the main technical changes are as follows:
a) The scope of application has been changed (see Chapter 1, Chapter 1 of the:2015 edition);
b) Added classification (see Chapter 4);
c) The chemical composition requirements have been changed (see 5:1, 3:1 of the:2015 edition);
d) Added requirements for product particle size range (see 5:2);
e) Added the condition requirement of “under natural diffuse light” (see 6:3);
f) Added product quality inspection method (see 7:1:1);
g) Changed the rules for “sampling” (see 7:4, 5:4 of the:2015 edition);
h) Changed the packaging requirements (see 8:1, 6:2 of the:2015 edition);
i) The marking, transportation and storage have been changed (see 8:2, 6:1, 6:3 and 6:4 of the:2015 edition);
j) Added “accompanying documents” (see 8:3):
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: Ganzhou Nonferrous Metallurgy Research Institute Co:, Ltd:, Inner Mongolia Shengquan Keliyuan New Materials Technology Co:, Ltd:, Baotou Rare Metallurgy Research Institute Co:, Ltd:
Soil Research Institute, Ningxia Fenghua Industrial Co:, Ltd:, Baotou Huashang Rare Earth Alloy Co:, Ltd:, Ruike Rare Earth Metallurgy and Functional Materials National Engineering
Center Co:, Ltd:, Longnan Long Yttrium Heavy Rare Earth Technology Co:, Ltd:, and Guorui Kechuang Rare Earth Functional Materials (Ganzhou) Co:, Ltd:
The main drafters of this document are: Hong Kan, Xu Jianbing, Liu Yanfen, Liang Xin, Ma Hankun, Li Zhongqi, Wang Guangxin, Zhou Baolu, Wu Ying, Zhang Jikai,
Li Zhenye, Zhang Xianheng, Lü Weidong, Liu Hongli, Jiang Shan, Wang Youzhen, Jia Guangwen, Yang Qing, Xiao Yong, Wang Weisheng, and Liu Weizhen:
The previous versions of this document and the documents it replaces are as follows:
---First published as GB/T 4138-1984 in 1984, first revised in:1993, second revised in:2004, third revised in:2015
revision;
---This is the fourth revision:
Rare Earth Magnesium Silicon Ferroalloy
1 Scope
This document specifies the classification, technical requirements, test methods, inspection rules and packaging, marking, transportation and storage of rare earth magnesium ferrosilicon alloy products:
and accompanying documents:
This document is applicable to the preparation of light rare earth magnesium ferrosilicon alloys and yttrium-based heavy rare earth magnesium ferrosilicon alloys used as spheroidizers and vermicularizers by the melt-matching method:
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 version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document:
GB/T 8170 Rules for rounding off values and expression and determination of limit values
GB/T 13247 Sampling and testing methods for particle size of ferroalloy products
GB/T 15676 Rare Earth Terminology
GB/T 16477 (all parts) Chemical analysis methods for rare earth ferrosilicon alloys and magnesium ferrosilicon alloys
GB/T 24194 Determination of ferrosilicon, aluminum, calcium, manganese, chromium, titanium, copper, phosphorus and nickel content - Inductively coupled plasma atomic emission spectrometry
GB 39176 Packaging, marking, transportation and storage of rare earth products
3 Terms and definitions
The terms and definitions defined in GB/T 15676 and the following apply to this document:
3:1
An iron alloy with mixed rare earths, magnesium, silicon and iron as the main components, mainly lanthanum or cerium:
3:2
An iron alloy with mixed rare earths, magnesium, silicon and iron as the main components, mainly yttrium:
3:3
Mix-melting method
A method of obtaining an alloy by heating raw materials and flux using fuel or electrical energy to melt them at a certain temperature:
4 Categories
4:1 Brand
Rare earth magnesium ferrosilicon alloy can be divided into light rare earth magnesium ferrosilicon alloy and yttrium-based heavy rare earth magnesium ferrosilicon alloy:
Yttrium-based heavy rare earth magnesium-silicon ferrosilicon alloys are divided into 14 grades according to their chemical composition:
4:2 Brand designation method
Rare earth magnesium ferrosilicon alloy grades are divided into three levels, the first level represents rare earth magnesium ferrosilicon alloy, using the chemical symbol of rare earth magnesium ferrosilicon
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