GB/T Translated English of Chinese Standard: GB/T NATIONAL STANDARD OF THE

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1 Translated English of Chinese Standard: GB/T GB NATIONAL STANDARD OF THE PEOPLE S REPUBLIC OF CHINA ICS H62 GB/T Replacing GB/T Designation and Chemical Composition of Wrought Copper and Copper Alloys 加工铜及铜合金牌号和化学成分 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. Page 1 of 23

2 Table of Contents Foreword Scope Chemical Composition... 5 Appendix A (Informative) Identical Designation of American Standard Page 2 of 23

3 Foreword This Standard was drafted in compliance with the rules specified in GB/T This Standard replaces GB/T "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 are reserved, and 102 designations are added; 213 designations are included in this Standard in total. Compared with GB/T , 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, QBe , QBe , QBe , QBel.7, QBel.9, QBel.9-0.1, QBe2, QCr0.5, QCr , QCr , 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, TBe , TBe , TBe , TBel.7, TBel.9, TBel.9-0.1, TBe2, TCr0.5, TCr , TCro , 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, TAg , TAg0.15, TP3, TP4, TTe0.3, TTe , TTe , TS0.4, TZr0.15, and TUAl0.12; - 15 designations for high copper alloy were added: TBel.9-0.4, TNi , TCr , TCr , TCr0.7, TCr0.8, TCrl-0.15, TCrl-0.18, TMg0.2, TMg0.4, TMg0.5, TPb1, TFel.0, TFe0.1, and TTi ; - 35 designations for were added: H66, HB90-0.1, HPb , HPb , HPb , HPb60-3, HPb59-2, HPb58-2, HPb58-3, HPb57-4, HSn72-1, Page 3 of 23

4 HSn , HSnT , HSn , HBi60-2, HBi60-1.3, HBi , HBi , HBi , HBi , HBi59-1, HBi62-1, HMn , HMn , HMn62-13, HMn , HMn , HSb , HSb60-0.9, HSi75-3, HSi62-0.6, HSi61-0.6, HAl , HAl and HMg60-1; - 14 designations for bronze were added: QSn0.4, QSn0.6, QSn0.9, QSn , QSnl , QSnl.8, QSn5-0.2, QSn5-0.3, QSn6-0.05, QSnlS-1-1, QCr , QAl6, QAll and QSi0.6-2; - 19 designations for white copper were added: B23, BFe , BFel , BFel , BFel , 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, BZnl and BZnl ; - 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 , GB/T ; - GB/T , GB/T , GB/T Page 4 of 23

5 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~ 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. Page 5 of 23

6 Classification Code Designation Cu+Ag (minimum) GB/T Table 1 Chemical Composition of Wrought Copper P Ag Bi a Sb a As a Fe Ni Pb Sn S Zn O C10100 TU b Te , Se , Mn , Cd Oxygen-free copper T10130 TU T10150 TU T10180 TU2 c C10200 TU T10350 TU00Ag ~ C10500 TUAg Silver oxygen-free copper T10510 TUAg ~ T10530 TUAg ~ T10540 TUAg ~ T10550 TUAg ~ Zirconium oxygenfree copper T10600 TUZr d Zr:0.11~ T10900 T Pure copper T11050 T2 e,f T11090 T Silver copper 0.08~ T11200 TAg g 0.004~ T11210 Tag b ~ T11220 Tag ~ Phosphorus deoxidized copper C12000 TP C12200 TP ~ ~ T12210 TP ~ Page 6 of 23

7 Table 2 Chemical Composition of Wrought High Copper Alloy a Classificatio n Code Designation Cu Be Ni Cr Si Fe Al Pb Ti Zn Sn S P Mn Co Impurity sum Cadmium copper C16200 TCd1 Allowance Cd:0.7~ C17300 TBe b Allowance 1.80~ ~ T17490 TBe Allowance 0.25~ Ag:0.90 ~ ~ Berylium copper C17500 TBe Allowance 0.4~ ~ C17510 TBe Allowance 0.2~ ~ T17700 TBe1.7 Allowance 1.6~ ~ ~ T17710 TBe1.9 Allowance 1.85~ ~ ~ T17715 TBe Allowance 1.5~ ~ ~ Mg:0.07 ~0.13 v 0.5 T17720 TBe2 Allowance 1.80~ ~ Nickel- chromium- copper c 0.10~0 C18000 TNi Allowance - 1.8~ ~ C18135 TCr Allowance ~ Cd:0.20 ~ T18140 TCr0.5 Allowance ~ Chromium copper T TCr Allowance ~ ~ Mg:0.1~ T18144 TCr Allowance ~ ~ Ag:0.08 ~ T18146 TCr0.7 Allowance ~ Page 8 of 23

8 Classification Code Designation GB/T Table 3 Chemical Composition of Wrought Brass Cu Fe a Pb Si Ni B As Zn Impurity sum C21000 H ~ Allowance 0.3 C22000 H ~ Allowance 0.3 C23000 H ~ Allowance 0.3 C24000 H80 b 78.5~ Allowance 0.3 Common Copperzinc alloy T26100 H70 b 68.5~ Allowance 0.3 T26300 H ~ Allowance 0.3 C26800 H ~ Allowance 0.45 C27000 H ~ Allowance 0.45 T27300 H ~ Allowance 0.5 T27600 H ~ Allowance 0.5 T28200 H ~ Allowance 1.0 Boron arsenic T22130 H B ~ ~0.3 - Allowance 0.5 c T23030 H As ~ ~0.08 Allowance 0.3 C26130 H As ~ ~0.08 Allowance 0.4 T26330 H As ~ ~0.06 Allowance Page 10 of 23

9 Classification Code DesignationHSn72-1 GB/T Table 3 (Continued) Cu Te B Si As Bi Cd Sn P Ni Mn Fe a Pb Zn Impurity sum T41900 HSn ~ ~ Allowance 0.2 C44300 HSn ~ ~ d Allowance 0.4 T45000 HSn ~ ~ ~ Allowance 0.3 Tin T45010 HSn ~ ~ ~ ~ Allowance 0.3 Copperzinc-tin T45020 HSn ~ ~ ~ ~ ~ ~ Allowance 0.3 alloy, T46100 HSn ~ ~ ~ Allowance 0.3 Complex T46300 HSn ~ ~ Allowance 0.3 T46410 HSn ~ ~ Allowance 1.0 T49230 HBi ~ ~ Allowance 0.5 c Bismuth T49240 HBi ~ ~ ~ 1.2 c Allowance 0.3 x C49260 HBi ~ ~ Allowance Page 12 of 23

10 Classification Code Designation GB/T Table 3 (Continued) Cu Fe a Pb Al Mn P Sb Ni Si Cd Sn Zn Impurity sum T67330 HMn ~ ~ ~ ~ ~ ~ Allowance 0.3 Manganese T67400 HMn58-2 i 57.0~ ~ Allowance 1.2 T67410 HMn i 55.0~ ~ ~ ~ Allowance 1.3 T67420 HmN ~ ~ ~ ~ ~ ~ Allowance 1.0 Iron T67600 T67610 HFe HFe ~ ~ ~ ~ ~ ~ 0.5~ Allowance Allowance 0.5 Complex Stibium T68200 HSb ~ ~ ~ 1.2 j 0.3~ Allowance 0.5 c T68210 HSb ~ ~ ~ 0.9 k Allowance 0.3 c T68310 HSi ~ ~ Allowance 1.5 Silicon T68320 HIS ~ ~ ~ Allowance 0.6 c C68350 HS ~ ~ ~ Allowance 2.0 T68360 HSi ~ ~ ~ 1.0 c 0.4~ Allowance 0.3 Aluminum C68700 HAl ~ ~ 2.5 As:0.02 ~ Allowance Page 14 of 23

11 f For this designation, P 0.005%, B 0.01%, Bi 0.005% and Sb 0.005%. g This value is for Ti+Al. h This value is for Ni+Co. i Phosphoric mass fraction in HMn and HMn58-2 for mold castings and hot forging is not greater than 0.03%. The mass fraction of aluminum in HMn for special use is not greater than 0.1%. j This value is for Ni+Sn+B. k This value is for Ni+Fe+B. Table 4 Chemical Composition of Wrought Bronze Classification Code Designation Cu Sn p Fe Pb Al B Ti Mn Si Ni Zn Impurity sum T50110 QSn0.4 Allowance 0.15~ O Copper tin, copper tin phosphorus and copper-tinlead alloy Tin bronze b T50120 QSn0.6 Allowance 0.4~ T50130 QSn0.9 Allowance 0.85~ T50300 QSn Allowance 0.25~ ~ T50400 QSn Allowance 0.2~ S ~ ~ C50500 QSn Allowance 1.0~ ~ C50700 QSn1.8 Allowance 1.5~ T50800 QSn4-3 Allowance 3.5~ ~ C51000 QSn5-0.2 Allowance 4.2~ ~ T51010 QSn5-0.3 Allowance 4.5~ ~ C51100 QSn4-0.3 Allowance 3.5~ ~ T51500 QSn Allowance 6.0~ Ag:0.05~ T51510 QSn Allowance 6.0~ ~ T51520 QSn Allowance 6.0~ ~ T51530 QSn7-0.2 Allowance 6.0~ ~ C52100 QSn8-0.3 Allowance 7.0~ ~ Page 16 of 23

12 Table 4 (Continued) Cu Si Fe Ni Zn Pb Mn Sn p As a Sb a Al Impurity sum Coppersilicon alloy Silicon bronze C64700 QSi0.6-2 Allowance 0.40~ ~2.2 f T64720 QSi1-1 Allowance 0.6~ ~ ~ T64730 QSi3-1 b Allowance 2.7~ ~ T64740 QSi Allowance 3.0~ ~ ~ ~ a Arsenic, bismuth and stibium may not be analyzed, but the Supplier must guarantee that their value is not greater than the limit. b Mass fraction of iron contained in tin bronze for magnetic resistance is not greater than 0.020% and that of iron in QSi3-1 is not greater than 0.030%. c Mass fraction of zinc in QAL for non-wear-resistant materials may be 1%, but that of impurity sum shall not be greater than 1.25%. d Through negotiation of the Parties, mass fraction of zinc in QAl for welding or special requirements is not greater than 0.2%. e This value is measured value sum of impurity elements in the table. f This value is for Ni+Co. Page 18 of 23

13 Classification Code Designation GB/T Table 5 (Continued) Cu Ni+Co Fe Mn Pb Al Si P S C Sn Bi a Ti Sb a Zn Impurity sum C73500 BZn ~ ~ Allowance 1.35 T74600 BZn ~ ~ Mg As a Allowance 0.9 C75200 BZn ~ ~ Allowance 1.3 T75210 BZn ~ ~ Allowance 0.9 Copper- Zinc nickel- zinc white copper alloy T76100 BZn ~ ~ Allowance 0.8 d T76200 BZn ~ ~ Allowance 0.8 d T76210 BZn ~ ~ Allowance 0.8 d T76220 BZn ~ ~ Allowance 0.8 d T76300 BZn ~ ~ Allowance 0.8 d T76400 BZn ~ ~ Allowance 0.8 d T76500 BZn ~ ~ Allowance 0.8 d C77000 BZn ~ ~ Allowance 0.8 T77500 BZn ~ ~ Allowance 0.8 d T78300 BZn ~ ~ ~ Allowance Page 20 of 23

14 Appendix A (Informative) Identical Designation of American Standard Digital code in national standard Designation in this Standard Digital code in national standard Designation in this Standard C10100 TU00 C27000 H65 C10200 TU3 C31400 HPb89-2 C10500 TUAg0.03 C33000 HPb C12000 TP1 C35300 HPb62-2 C12200 TP2 C36000 HPb62-3 C14500 TTe0.5 C37100 HPb61-1 C14510 TTe C37700 HPb60-2 C14700 TS0.4 C44300 HSn72-1 C15000 TZr0.15 C49260 HBi C16200 TCd1 C49350 HBi62-1 C17300 TBe C50500 QSn C17500 TBe C50700 QSn1.8 C17510 TBe0.4-1/8 C51000 QSn5-0.2 C18000 TNi C51100 QSn4-0.3 C18135 TCr C52100 QSn8-0.3 C18150 TCr C60800 QAl6 C18200 TCr1 C61000 QAl7 C18661 TMg0.4 C64700 QSi0.6-2 C18700 TPb1 C68350 HSi C19200 TFE1.0 C68700 HAl77-2 C19210 TFe0.1 C70400 BFe C19400 TFe2,5 C70610 BFe Page 22 of 23

15 Digital code in national standard Designation in this Standard Digital code in national standard Designation in this Standard C19910 TTi C71100 B23 C21000 H95 C71500 BFe C22000 H90 C73500 BZn18-10 C23000 H85 C75200 BZn18-18 C24000 H80 C77000 BZn18-26 C26130 HAs C79800 BZn C26800 H66 C79860 BZn END Page 23 of 23