GB/T 467-2010Copper cathode (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. In this standard, grade A copper (Cu-CATH-1) equivalently adopts the impurity limit of the designation (Cu-CATH-1) in EN 1978.1998 "Copper and copper alloys - Copper cathode". The N.1 standard copper (Cu-CATH-2) modifies and adopts the impurity limit of the designation Grade2A in ASTM B 115-00 (R2004) "Electrolytic copper cathode"; AND the No.2 standard copper (Cu-CATH-3) modifies and adopts the impurity limit of the designation Cu-CATH-2 in EN 1978.1998 "Copper and copper alloy - copper cathode". As compared with EN 1978.1998 and ASTM B 115-00 (R2004), the differences of this standard are as follows: - The limit of bismuth in standard copper (Cu-CATH-2) is <= 0.0005%, which is higher than that in designation Grade 2A (<= 0.0003%) in ASTM B 115-00 (R2004). The limit of lead is <= 0.002%, which is lower than that in the designation Grade 2A (<= 0.0040%). It does not consider the selenium, tellurium, and silver. The limit of phosphorus is increased, BUT the rest limit indicators are the same; - The bismuth and lead in No.2 standard copper (Cu-CATH-3) equivalently adopt the limit of the designation Cu-CATH-2 in EN 1978.1998; AND the silver equivalently adopts the limit of the designation Cu-CATH-1. This standard replaces GB/T 467-1997 "Copper cathode". As compared with the original standard, the main changes are as follows: - ADD the designation No.2 standard copper (Cu-CATH-3); - ADD the specifications on the physical performance indicators AND the mass resistivity; - MAKE unified specification on the surface quality; - As for the copper cathode chemical composition analysis method, ADD the YS/T 464 "Methods for analytical of copper cathode - The optical emission spectrometry"; - ADD the copper cathode production sampling and sample preparation method. This standard shall be under the jurisdiction of the National Nonferrous Metals Standardization Committee (SAC/TC 243). The responsible drafting organizations of this standard. Jiangxi Copper Co., Ltd., China Nonferrous Metals Industry Standard Measurement Quality Institute. The participating drafting organizations of this standard. Daye Nonferrous Metals Company, Tongling Nonferrous Metals Group Holdings Co., Ltd., Yunnan Copper Co., Ltd., Jinchuan Group Co., Ltd., Zijin Mining Group Co., Ltd., Yanggu Xiangguang Copper Co., Ltd., Co., Ltd., North Copper Co., Ltd. The main drafters of this standard. Wu Yiwei, Li Baodi, Long Ziping, Zhao Yongshan, Huang Mingjin, Huang Hongwei, Cheng Tong, Tu Lixin, Wu Wenming, Wu Zhiqing, Lu Weiming, Liao Zhanpi, Zhou Songlin, Zhang Guanghua, Yan Hong, Zhang Yonghong, Li Jiasheng. This Standard replaces the standard previously issued as follows: - GB/T 467-1997; - GB/T 13585-1992; - GB/T 467-1982. Copper cathode

1 Scope

China's national standard for copper cathode. Copper cathode is the form in which refined copper is traded worldwide: sheets of about 99.99 per cent copper, produced either by electrolytic refining of blister copper or by electrowinning from leach solution, and destined almost entirely for remelting into rod, wire, tube and alloys. Its purity specification is unusually consequential, because copper's value lies in its electrical conductivity and conductivity is destroyed by impurities at concentrations of parts per million - a few thousandths of a per cent of phosphorus, iron or arsenic in solid solution costs several per cent of conductivity, and bismuth or lead at similar levels makes the metal crack when it is worked hot. That is why cathode is specified in tens of trace elements rather than in a single purity figure. The standard specifies the requirements, test methods, inspection rules, marking, packaging, transport, storage, quality certificate and contract contents for copper cathode.

This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation, storage, quality certificate, and contract (or order) contents of the copper cathode. This standard applies to copper cathode produced by electrolytic refining or electrolytic deposition. AND it is usually used in remelting.

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 Standard.

GB/T 351 Metallic material - Resistivity measurement method

GB/T 5121 (all parts) Methods for chemical analysis of copper and copper alloys

GB/T 8170 Rules for rounding off for numerical values & expression and judgement of limiting values

3 Requirements

3.1 Product classification The copper cathode is divided into three designations in accordance with chemical compositions. grade A copper (Cu-CATH-1), No.1 standard copper (Cu-CATH-2), AND No.2 standard copper (Cu-CATH-3).

4 Test method

4.1 Analysis of chemical composition of copper cathode is performed in accordance with the requirements of GB/T 5121 and YS/T 464.AND the arbitration analysis method is GB/T 5121.

6 Marking, packaging, transportation, storage and quality certificates

6.1 Copper cathode shall be packaged by the high strength materials which are not easy to produce pollution into bundles of such mass as suitable for handling. However, it may also not be packaged if agreed between the supplier and the purchaser.

6.2 Each bundle of copper cathode must have a clear marking, specifying.

6.3 Transportation and storage During transportation and storage, it shall not contaminate the product.

6.4 Each batch of copper cathode shall be accompanied by a quality certificate, indicating.