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GB/T 29091-2012 PDF in English


GB/T 29091-2012 (GB/T29091-2012, GBT 29091-2012, GBT29091-2012)
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GB/T 29091-2012: PDF in English (GBT 29091-2012)

GB/T 29091-2012
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.150.30
H 62
Copper and Copper Alloy Designation and Code System
ISSUED ON. DECEMBER 31, 2012
IMPLEMENTED ON. OCTOBER 01, 2013
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms ... 4
4 Naming Method of the Grade ... 5
5 Arrangement Principles of Codes ... 10
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard code was prepared in reference wit America ASTM E527.2007 Metal
and Alloy Numbering Provision (UNS).
This Standard shall be under the jurisdiction of National Technical Committee for
Standardization of Non-Ferrous Metals (SAC/TC 243).
Drafting organizations of this Standard. Chinaco Luoyang Copper Co., Ltd., Chinaco
Shenyang Non-Ferrous Metal Processing Co., Ltd., Zhejiang Hailiang Co., Ltd.,
Ningbo Boway Alloy Material Co., Ltd., and China National Nonferrous Metals Industry
Standards and Quality Research Institute.
Participating drafting organizations of this Standard. Chinaco Shanghai Copper Co.,
Ltd., and Shenzhen Green Econ-Manufacture Hi-Tech Co., Ltd.
Chief drafting staffs of this Standard. Meng huijuan, Zhao Wanhau, Yang Lijuan, Zhu
Yingli, Wang Yanjie, Cao Jianguo, Cai Jihua, Chen Weiwen, Wei Lianyun, Zhang Xiang,
Zhao Baohong, Wang Yunsong, and Tan Cuili.
Copper and Copper Alloy Designation and Code System
1 Scope
This Standard specifies the designation of grade and code for copper and copper alloy.
This Standard is applicable to the processing, casting and recycling products of copper
and copper alloy.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 11086 Copper and Copper Alloy – Terms and Definitions
3 Terms
The following terms and definitions and those stipulated in GB/T 11086 are applicable
to this document.
3.1 High copper alloys
The processing of high copper alloys refers to using copper as the base metal, then
add one or more microelements, so that obtain certain alloys with the expected
properties. Generally, if the copper content is in the range of 96.0% ~< 99.3%. it shall
be used for cold or hot rolling processing.
The casting of high copper alloys refers to using copper as the base metal; generally,
if the copper content is greater than 94%, it shall be used for casting processing. In
order to obtain particular properties, such kind of alloys can be added silver.
3.2 Recycling copper and copper alloys
The qualified copper and copper alloy products directly made of materials containing
waste copper.
4.3 Naming method for the grades of recycling copper and copper alloy
Based on the naming method for the grades of recycling copper and copper alloy, the
most front end of the grade shall be crowned with the first capital letter of “recycling”,
namely, the letter “R”.
5 Arrangement Principles of Codes
The codes for copper and copper alloy consist of the first capital letter “T” in the
Chinese Pinyin of “copper” or the first capital letter “C” in English word of “copper” and
five Arabic numerals.
The code number range for processing copper and copper alloy is “10000~79999”;
while the code number range for casting copper and copper alloy is “80000~99999”.
In the same category, it shall be sequenced as per the copper content from high to low;
if the copper content is equal, it shall be sequenced as per the first main additive
element content from high to low.
5.1 Arrangement methods for codes of processing copper and copper alloy
The code arrangement for processing copper and copper alloy can refer to the
provisions of Table 1.
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.