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 H 60 GB/T Replacing GB/T Wrought uminium and uminium loy Chemical Composition 变形铝及铝合金化学成分 (ISO 209:2007 uminium and uminium loy - Chemical Composition, MOD) Issued on June: 17, 2008 Implemented on: December 1, 2008 Issued by: General Administration for Quality Supervision and Inspection and Quarantine (GAQSIQ); Standardization Administration of China (SAC). Page 1 of 34

2 Table of Contents Foreword Scope Normative References Requirements Annex A Annex B Page 2 of 34

3 Foreword This Standard modifies and adopts ISO209:2007 "Wrought uminium and uminium loy - Chemical Composition" (English edition), and it is redrafted in accordance with ISO209:2007. For ease of comparison, the list of corresponding chapters and sections between the International Standard and this Standard is detailed in Annex B (Informative). Modifications are done while adopting the International Standard. the technical differences are marked with vertical single-line on the page margin of the involved articles; they are as follows: Delete the designation and composition of aluminium and aluminium alloy that have not been produced in China ever; Delete the table of comparison between new and old designations in the ISO standard; Add four-letter designation and composition that are special in China; Add the requirements for special control of toxic and harmful elements; Add the requirements on composition analysis and sampling. This Standard replaces GB/T "Wrought uminium and uminium loy-chemical Composition". Compared with GB/T , the main revisions in this Standard are as follows: Add designations and compositions of 130 aluminiums and aluminium alloys; divide the Table of chemical composition into two parts (two tables): Table 1 is applicable to international designations, covering 159 designations; Table 2 is applicable to four-letter designations, covering 114 designations; Add the requirements for special control of toxic and harmful elements; Add the denotation (method) of limit value; Revise "Table of Comparison between New and Old s". Annex A and Annex B of this Standard are informative. This Standard was proposed by China Non-ferrous Metals Industry Federation. This Standard shall be under the jurisdiction of the National Standardization Technical Committee of Non-ferrous Metal. Main drafting organizations of this Standard: Northeast Light loy Co., Ltd., China Non-ferrous Metals Industry Standard Measurement Quality Institute Page 3 of 34

4 Wrought uminium and uminium loy Chemical Composition 1 Scope This Standard specifies the chemical composition of wrought aluminium and aluminium alloy. This Standard is applicable to aluminium and aluminium alloy products (plate, strip, foil, pipe, stick, section, line and forging) produced with press working, and cast ingot and blanks used for them. 2 Normative References The following standards contain the provisions which, through reference in this text, constitute the provisions of this Standard. For the dated reference, the subsequent amendments (excluding correction) or revisions of these publications do not apply. However, the parties who enter into agreement according to these specifications are encouraged to study whether the latest editions of these labels are applicable. For undated references, the latest edition of the normative document is applicable to this Standard. GB/T 7999 Optical emission spectrometric analysis method of aluminum and aluminum alloys GB/T 8170 Rules for rounding off of numerical values GB/T Wrought aluminium and aluminium alloy - system GB/T Chemical analysis methods of aluminium and aluminium alloys (all parts) 3 Requirements 3.1 Chemical composition The chemical compositions of wrought aluminiums and aluminium alloys shall meet the requirements of Table 1 and Table 2. The column "others" indicates the metallic element not listed in the table. For the contents in the table that are in single-numerical-value, it is the minimal limit for aluminium; and it is the maximal limit for other elements. The denotation of limit value is as: Page 5 of 34

5 Table 2 are suspected exceeding the limits of "single" or "total" values specified in this Standard, then the manufacturer may do analysis for these elements When the content (mass fraction) of aluminium is larger than or equal to 99.00% and less than 99.90%, it shall be determined by the calculation (method) that % is deducted by the sum of the contents of all the elements of which the content is less than 0.010%. The content value of the elements shall be rounded to 0.0x% before summing When the content (mass fraction) of aluminium is larger than or equal to 99.00% and less than or equal to 99.99%, it shall be determined by the calculation (method) that % is deducted by the sum of the contents of all the elements of which the content is less than %. The content value of the elements shall be rounded to 0.0XX% before summing. The sum shall be rounded to 0.0X% The chemical components shall be analyzed by the method specified in GB/T 7999 or GB/T 20975, or other reliable and accurate method. in the case of dispute, the method specified in GB/T or other method agreed by both parties must be adopted for arbitration analysis If the first analytical results does not meet the requirements, second analysis may be allowed; the second analytical result is deemed as the judgment basis for exit-factory of the manufacturer and acceptance The digit-number of element contents in chemical composition analytical report shall be of correspondence to the one of the corresponding designation specified in Table 1 or Table The rounding of numerical values shall meet the requirements of GB/T The relation table of comparison for new and old designations is detailed in Annex A. Page 7 of 34

6 Table 1 Single Total V V V V A V V V A Ga, 0.05V A Ga Ga, 0.05V Si+Fe 0 05~0 20 0, H Si+Fe A 1.00Si+Fe ~ Ga, 0.05B, 0.02V+Ti Si+Fe V Si+Fe V ~ V Si+Fe V V Page 8 of 34

7 Table 1 (continued) Single Total ~ ~ Margin ~ ~ Margin A ~ ~ Margin ~ ~ ~ ~ Margin ~ ~ Margin ~ ~ Margin ~ Margin A ~ Margin ~ Ί Margin ~ ~ Margin ~ ~ ~ ~ Margin Page 12 of 34

8 Table 1 (continued) Single Total ~ ~ ~ Margin ~ ~ ~ ~ Margin ~ ~ ~ Margin ~ ~ ~ ~ Margin ~ Margin ~ ~ Margin ~ ~ ~ Margin ~ ~ ~ Margin ~ ~ Margin ~ ~ ~ Margin ~ ~ B Margin Page 15 of 34

9 Table 1 (continued) Single Total ~ ~ ~ ~0.7Bi 0.20~0.40Sn Margin ~ ~ ~ Margin ~ ~ ~ Margin ~ ~ ~ ~ Margin A 0.40~ ~ ~ ~ Margin ~ ~ ~ ~ Margin ~ ~ Margin A 0.30~ ~ ~ Margin ~ ~ Margin A 0.20~ ~ Margin Page 17 of 34

10 Table 1 (continued) Single Total ~ ~ ~ ~ Margin ~ ~ ~ ~ , Margin ~ ~ ~ ~ Margin ~ ~ Margin ~ ~ Margin ~ ~ Margin A 0.40~ ~ Margin ~ ~ Margin ~ Margin B ~ Margin Page 20 of 34

11 Table 1 (continued) Single Total ~ ~ ~ Margin ~ ~ Margin ~ ~ Margin ~ ~ ~ Margin 1 ω(be) of welding electrode and filling: %. 2 Mostly used as coating material. 3 ω(si+fe) 0.14%. 4 ω(b) 0.02%. 5 ω(bi): 0.20%~0.6%, ω(pb): 0.20%~0.6%. 6 the maximal value of ω (Zr+Ti) of extrusion product and forging, as negotiated and agreed by the parties, may be up to 0.20%. 7 ω(si+fe) 0.40%. 8 ωcpb 0.003%. 9 ω(bi):0.40%~0.7%, ω(pb):0.40%~0.7%. 10 ω(2r):0.08%~0.20½, ω(zr+ti):0.08%~0.25%. 11 the maximal value of ω (Zr+Ti) of extrusion product and forging, as negotiated and agreed by the parties, may be up to 0.25%. 12 ω(b) 0.001%, ω(cd) 0.003%, ω(co) 0.001%, ω(li) 0.008%. 13 ω(li): 2.2%~2.7%. Page 21 of 34

12 Table 2 (continued) Single Total Remarks 30 2B ~ ~ Margin LY9 31 2D ~ ~ ~ Margin 32 2E ~ ~0.7 U~ ~0.005Be Margin 33 2A ~ ~ Margin LY A14 0.6~ ~ ~ ~ Margin LD A ~ ~ ~ Margin LY B ~ ~ ~0.15V 0.08~ ~ Margin LY A ~7.0 0, 40~ ~ ~ Margin LY A ~ ~0.15V 0.07~ ~ Margin LY ~0.01B 39 2A ~ ~ ~ ~ Margin 40 2A ~ ~ ~ ~0.9Li ~ Margin Page 24 of 34

13 Table 2 (continued) Single Total Remarks 52 2A ~ ~ ~ ~ ~ Margin LD8 53 2A ~ ~ ~ ~ ~ Margin LD9 54 2A ~ ~ ~ ~ ~0.10Be 0.8~2.3Li 0.001~ ~ Margin 55 3A ~ Margin LF A01 4.5~ Zn+Sn Margin LT1 57 4A ~ ~ ~ , 50~ Margin LD A13 6.8~ Cu+Zn Ca Margin LT A ~ Cu+Zn Ca Margin LT A91 1.0~ Margin 61 5A Si+Fe ~ ~ ~ ~ Margin LF A Or Cr 0.15~ ~ Si+Fe Margin LF2 Page 26 of 34

14 Table 2 (continued) Single Total Remarks 63 5B ~ ~ Margin 64 5A ~ ~ ~ Margin LF3 65 5A ~ ~ Margin LF5 66 5B ~0, 6 4.7~ Si+Fe Margin LF A ~ ~ ~0.005Be ~ Margin LF6 68 5B ~ ~ ~0.005Be ~ Margin LF A ~ ~ Be Margin LF ~0.05Sb 70 5A ~ ~ Be 0.004~0.05Sb 0.05~ Margin LF A ~ ~ ~0.002Be 0.10~0.40Sc ~ Margin 72 5A Si+Fe ~ ~ ~0.20Cr 0.03~ Margin LF A ~ ~1.5 0, 0005~0.005Be ~ ~ Margin LF33 Page 27 of 34

15 Table 2 (continued) Single Total Remarks 84 6A ~ ~0.6 Or Cr 0.15~ Margin LD2 85 6B02 0.7~ ~ ~ ~ ~ Margin LD R ~ ~ ~ ~ ~0.20 RE Margin 87 6A10 0.7~1, ~ ~ ~ ~ ~ ~ Margin 88 6A51 0, 50~ ~ ~ ~0.35Sn 0.01~ Margin 89 6A60 0.7~1.1 0, ~ ~ ~ ~0.Ί0 0.30~0.50Ag 0.04~ ~ Margin 90 7A ~ Si+Fe 0.03 Margin LB1 91 7A ~ ~ ~6, ~ Margin LC3 92 7A ~ ~ ~ ~ ~ Margin LC4 93 7B , 05~ ~2.0 0, 20~ ~2.8 0, 10~ ~ Margin 94 7C ~ ~ ~ ~ ~ Margin Page 29 of 34

16 Table 2 (continued) Single Total Remarks 95 7D ~ ~ ~ ~0.07Be ~ Margin 96 7A ~ ~ ~ ~ ~ ~ Margin 97 7B ~ ~ ~ V Margin 7N A ~ ~ ~ ~ Margin LC9 99 7A ~ ~ ~ ~ ~ Margin LC A ~ ~ ~ ~ ~0.02Be ~ Margin 101 7A ~ ~ ~ ~ ~ ~0.01Be 0.05~ Margin LC A ~ ~ ~ ~ ~ ~0.004Be ~ Margin LC A ~ ^ ~ ~ ~ ~0.001Be Οδ Margin 104 7A ~ ~ ~ ~ Margin 105 7B ~ ~ ~ ~0.002Be ~ Margin Page 30 of 34

17 Annex A (Informative) Comparison Table of Letter-s Involved in Table 2 and the Former s The comparison table of letter-designations involved in Table 2 and the former designations is detailed as Table A.1. Table A.1 Comparison table of the letter-designations involved-in-table 2 AND the former designations Letter-designation Former Letter-designation Former Letter-designation Former involved in Table 2 designation involved in Table 2 designation involved in Table 2 designation 1A99 LG5 2A A66 LT66 1B99 2A23 5A70 1C99 2A24 5B70 1A97 LG4 2A A71 1B97 2B25 5B71 1A95 2A39 5A90 1B95 2A40 6A01 6N01 1A93 LG3 2A A02 LD2 1B93 2A50 LD5 6B02 LD2-1 1A90 LG2 2B50 LD6 6R05 1B90 2A70 LD7 6A10 1A85 LG1 2B70 LD7-1 6A A80 2D70 6A60 1A80A 2A80 LD8 7A01 LB1 1A60 2A90 LD9 7A03 LC3 1A50 LB2 2A97 7A04 LC4 1R50 3A21 LF21 7B04 1R35 4A01 LT1 7C04 1A30 L4-1 4A11 LD11 7D04 1B30 4A13 LT13 7A A01 LY1 4A17 LT17 7B05 7N01 2A02 LY2 4A A09 LC9 2A04 LY4 5A , LF15 7A10 LC10 2A06 LY6 5A02 LF2 7A12 2B06 5B02 7A15 LC15, 157 2A10 LYl0 5A03 LF3 7A19 919, LC19 2A11 LY11 5A05 LF5 7A B11 LY8 5B05 LFl0 7A33 LB733 2A12 LY12 5A06 LF6 7B50 Page 32 of 34

18 Annex B (Informative) Comparison of Corresponding Chapters and Sections between this Standard and ISO 209:2007 The comparison of corresponding chapters and sections between this Standard and ISO 209:2007 is detailed as Table B.1. Table B.1 Comparison of corresponding chapters and sections between this Standard and ISO 209:2007 Numbers of chapter or sections in this Standard Numbers of corresponding chapter or sections in the International Standard Tables 1, 3.1.1, 3.3.1, 3.3.3~3.3.5, 4.1, Annex A END Page 34 of 34