GB/T 5231-2012 English PDF (GBT5231-2012)

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GB/T 5231-2012: Designation and chemical composition of wrought copper and copper alloys
GB/T 5231-2012
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.150.30
H62
Replacing GB/T 5231-2001
Designation and Chemical Composition of Wrought
Copper and Copper Alloys
ISSUED ON. DECEMBER 31, 2012
IMPLEMENTED ON. OCTOBER 1, 2013
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine (AQSIQ);
Standardization Administration (SAC) of the People's
Republic of China.
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Chemical Composition ... 5 
Appendix A (Informative) Identical Designation of American Standard ... 22 
Foreword
This Standard was drafted in compliance with the rules specified in GB/T 1.1-2009.
This Standard replaces GB/T 5231-2001 "Wrought Copper and Copper Alloys
Chemical Composition Limits and Forms of Wrought Products". Some designations in
this Standard equivalently adopt the designations and chemical composition of
American copper and copper alloys; new requirements are made for some
designations and chemical composition in previous national standards; 111
designations in GB/T 5231-2001 are reserved, and 102 designations are added; 213
designations are included in this Standard in total. Compared with GB/T 5231-2001,
the main changes are as follows.
- Oxygen content of oxygen-free copper in this Standard was adjusted, TU0 in
previous standard was changed as TU00; it is identical to American designation
C10100; TU0 designation was added, and the oxygen content is 0.001%; TU1
and TU2 in previous standard were unchanged, the oxygen contents were 0.002%
and 0.003% respectively; oxygen-free copper TU3 was added and is identical to
American designation C10200;
- Designations QTe0.5, QZr0.2 and QZr0.4 in previous national standard were
integrated into pure copper series; the expression methods of the designations
were modified as TTe0.5, TZr0.2 and TZr0.4 respectively;
- Designations QCd1, QBe0.3-1.5, QBe0.6-2.5, QBe0.4-1.8, QBel.7, QBel.9,
QBel.9-0.1, QBe2, QCr0.5, QCr0.5-0.2-0.1, QCr0.6-0.4-0.05, QCr1, QMg0.8 and
QFe2.5 in previous national standards were integrated into high copper series;
the expression methods of the designations were modified as TCd1, TBe0.3-1.5,
TBe0.6-2.5, TBe0.4-1.8, TBel.7, TBel.9, TBel.9-0.1, TBe2, TCr0.5, TCr0.5-0.2-
0.1, TCro0.6-0.4-0.05, TCr1, TMg0.8 and TFe2.5 respectively;
- Designation H96 in previous national standard is identical to ASTM alloy
designation C21000; copper content was adjusted from 95.0%~97.0% to
94.0%~96.0% and designation was changed as H95;
- 19 designations for pure copper were added. TU0, TU3, TU00Ag0.06, TUAg0.03,
TUAg0.05, TUAg0.1, TUAg0.2, TUAg0.3, TUZr0.15, TAg0.1-0.01, TAg0.15, TP3,
TP4, TTe0.3, TTe0.5-0.008, TTe0.5-0.02, TS0.4, TZr0.15, and TUAl0.12;
- 15 designations for high copper alloy were added. TBel.9-0.4, TNi2.4-0.6-0.5,
TCr0.3-0.3, TCr0.5-0.1, TCr0.7, TCr0.8, TCrl-0.15, TCrl-0.18, TMg0.2, TMg0.4,
TMg0.5, TPb1, TFel.0, TFe0.1, and TTi3.0-0.2;
- 35 designations for brass were added. H66, HB90-0.1, HPb62-2-0.1, HPb61-2-
1, HPb61-2-0.1, HPb60-3, HPb59-2, HPb58-2, HPb58-3, HPb57-4, HSn72-1,
HSn70-1-0.01, HSnT0-1-0.01-0.04, HSn65-0.03, HBi60-2, HBi60-1.3, HBi60-
1.0-0.05, HBi60-0.5-0.01, HBi60-0.8-0.01, HBi60-1.1-0.01, HBi59-1, HBi62-1,
HMn64-5-1.5, HMn62-3-3-1, HMn62-13, HMn59-2-1.5-0.5, HMn57-2-2-0.5,
HSb61-0.8-0.5, HSb60-0.9, HSi75-3, HSi62-0.6, HSi61-0.6, HAl64-5-4-2, HAl61-
4-3-1.5 and HMg60-1;
- 14 designations for bronze were added. QSn0.4, QSn0.6, QSn0.9, QSn0.5-
0.025, QSnl-0.5-0.5, QSnl.8, QSn5-0.2, QSn5-0.3, QSn6-0.05, QSnlS-1-1,
QCr4.5-2.5-0.6, QAl6, QAll0-4-4-1 and QSi0.6-2;
- 19 designations for white copper were added. B23, BFe7-0.4-0.4, BFel0-1.5-1,
BFel0-1.6-1, BFel6-1-0.5, BFe30-0.7, BFe30-2-2, BZnl8-10, BZnl8-17, BZn9-29,
BZnl2-24, BZnl2-26, BZnl2-29, BZnl8-20, BZn22-16, BZn25-18, BZn40-20,
BZnl0-41-2 and BZnl2-37-1.5;
Designations for copper and copper alloy were added; the expression method is -
take T as the initial letter and followed by 5 digits. The alloys identical to American
alloy designation were still adopted with serial number of American designation.
This Standard shall be under the jurisdiction of National Technical Committee on
Nonferrous Metals of Standardization Administration of China (SAC/TC 243).
Drafting organizations of this Standard. Chinalco Shenyang Non-ferrous Metal
Processing Co., Ltd., Chinalco Luoyang Copper Co., Ltd., Zhejiang Hailiang Co., Ltd.,
Ningbo Powerway Group Co., Ltd. AND China Institute of Weights and Measures
Quality of Nonferrous Metal Industry.
Participating drafting organizations of this Standard. Chinalco Shanghai Copper Co.,
Ltd., Jiangsu Baoluo Copper Products Group Co., Ltd., Ningbo Jintian Copper (Group)
Co., Ltd. AND Shaoxing Libo Electric Co., Ltd..
Chief drafting staffs of this Standard. Wang Yanjie, Chen Jiangqiao, Zhao Baohong,
Wang Zhenyou, Zhang Bo, Zhang Caihong, Meng Huijuan, Zhao Wanhua, Cao
Jianguo, Wei Lianyun, Cai Jihua, Wang Yunsong, Yang Lijuan, Shao Shengzhong,
Zhang Yi, Zhang Shu, Wang Yongru, Hong Xieping, Xu Gaolei, Jiang Bochang, Fan
Zhigang, Liu Dongxia, Yu Jiangwen and Bao Jingguo.
The previous editions replaced by this Standard are as follows.
- GB/T 5231-1985, GB/T 5231-2001;
- GB/T 5232-1985, GB/T 5233-1985, GB/T 5234-1985.
Designation and Chemical Composition of Wrought
Copper and Copper Alloys
1 Scope
This Standard specifies designation and chemical composition of wrought copper and
copper alloy.
This Standard is applicable to the wrought product of copper and copper alloy
produced by pressure method, and the ingot casting and blank adopted for copper and
copper alloy.
2 Chemical Composition
2.1 Designation and chemical composition of wrought copper and copper alloy shall
meet those specified in Tables 1~5.
2.2 Content of alloy elements in Table 1 ~ Table 5 has upper and lower limits; if the
content is in single-value, the minimum limit is for copper; and the maximum limit is for
impurity element.
2.3 Impurity sum in Table 2 ~ Table 5 is the sum of all impurity elements, except the
principal composition; it mainly includes Ag, As, Bi, Cd, Co, Cr, Fe, Mn, Ni, O, P, Pb, S,
Sb, Se, Si, Sn, Te and Zn.
2.4 The limit value of elements not specified in Table 1 ~ Table 5 may be determined
through the negotiation of the Supplier and Purchaser. Where copper or zinc is the
element of allowance, the difference BETWEEN all analyzed elements AND 100% may
be taken.
2.5 This Standard equivalently adopts ASTM standard’s copper and copper alloy; its
codes are identical to ASTM’s designations. The summary of identical designations of
American standards is detailed in Appendix A.
Table 1 Chemical Composition of Wrought Copper
Classification Code Designation
Mass fraction of chemical composition/%
Cu+Ag
(minimum) P Ag Bi
a Sba Asa Fe Ni Pb Sn S Zn O
Oxygen-free copper
C10100 TU00
99.99b 0.000 3 0.002 5 0.000 1 0.000 4 0.000 5 0.001 0 0.001 0 0.000 5 0.000 2 0.001 5 0.000 1 0.000 5
Te≤0.000 2, Se≤0.000 3, Mn≤0.000 05, Cd≤0.0001
T10130 TU0 99.97 0.002 - 0.001 0.002 0.002 0.004 0.002 0.003 0.002 0.004 0.003 0.001
T10150 TU1 99.97 0.002 - 0.001 0.002 0.002 0.004 0.002 0.003 0.002 0.004 0.003 0.002
T10180 TU2c 99.95 0.002 - 0.001 0.002 0.002 0.004 0.002 0.004 0.002 0.004 0.003 0.003
C10200 TU3 99.95 - - - - - - - - - - - 0.001 0
Silver oxygen-free
copper
T10350 TU00Ag0.06 99.99 0.002 0.05~0.08 0.000 3 0.000 5 0.000 4 0.002 5 0.000 6 0...