YS/T 921-2025 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YS/T 921-2025	RFQ	ASK	3 days	Frosted Copper	Valid
YS/T 921-2013	159	Add to Cart	3 days	Copper matte	Valid

Basic data

Standard ID: YS/T 921-2025 (YS/T921-2025)
Description (Translated English): Frosted Copper
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: H62
Classification of International Standard: 77.150.30
Date of Issue: 2025-04-10
Date of Implementation: 2025-11-01
Older Standard (superseded by this standard): YS/T 921-2013
Issuing agency(ies): Ministry of Industry and Information Technology

YS/T 921-2013: Copper matte

---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.
Copper matte ICS 77.150.30 H62 People's Republic of China Nonferrous Metals Industry Standard Matte Issued on. 2013-10-17 2014-03-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized. This standard is drafted by. Daye Nonferrous Metals Co., Ltd., Yanggu Xiangguang Copper Limited. Participated in the drafting of this standard. Yunnan Copper Co., Ltd., Zhongtiaoshan Nonferrous Metals Group Co., Ltd. The main drafters of this standard. Zhang Zelin, Hu Xinping, Zhang Yonghong, Zhou Songlin, Yan Hong, Zhang Guanghua, Hong Xiongwen, Xu Song, Chen Yingwu, WANG Cheng-guo, Wang Min, Wangyou Fang, Wu Zhiqing, Li Jing. Matte

1 Scope

This standard specifies the matte (also called matte) requirements, test methods, inspection rules, packaging, quality forecasts or single contract (or purchase order), etc. content. This standard applies to the cuprous sulfide and ferrous sulfide consisting of copper between 15% to 70% of the intermediate product obtained by melting, for Thermal copper use.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 2007.6 bulk minerals sampling and sample preparation Determination of Water --- General heat drying method GB/T 8170 repair value expressed about the rules and limit values and judgment

3 Requirements

3.1 Categories Matte chemical composition into a product, two products, three products. 3.2 Chemical composition 3.2.1 matte chemical composition shall comply with the requirements of Table 1. Table 1 chemical composition of copper matte grade Chemical composition (mass fraction) /% Copper content Impurity content of not more than Pb Zn As MgO Sb Bi A > 5032 0.15 1 0.3 Two ≥35 ~ 50 4 3 0.3 2 0.4 Three ≥15 ~ 35 8 4 0.5 3 0.5 Note. both supply and demand for such products when there are special requirements, negotiated by both parties and specified in the contract. 3.2.2 bulk matte moisture content of not more than 3%; powdered matte moisture content of not more than 8%. 3.3 Physical Specifications 3.3.1 matte Press physical specifications are divided into two forms lumps and powder. 3.3.2 bulk matte particle size should be between 3mm ~ 150mm, powdered matte size not greater than 3mm. ......

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