Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 3190-2008 Wrought aluminium and aluminium alloy——Chemical composition. In addition to editorial changes, the following main technical changes have been made with respect to GB/T 3190-2008:
——The normative references are modified (see Clause 2; Clause 2 of Edition 2008);
——79 designations are added in and 6 designations are deleted from the table of international four-digit designations and chemical compositions (see 3.1.1; 3.1.1 of Edition 2008);
——29 designations are added in and the designation 2A97 is deleted from the table of domestic four-digit designations and chemical compositions (see 3.1.1; 3.1.1 of Edition 2008);
——The headers of the table of international four-digit designations and chemical compositions and the table of domestic four-digit designations and chemical compositions are modified, and eight columns of elements "Ag", "B", "Bi", "GA", "Li", "Pb", "Sn" and "V" are added (see 3.1.1; 3.1.1 of Edition 2008);
——The control requirements of aluminium and aluminium alloy materials for packaging are added (see 3.1.5);
——The sampling requirements are modified (see 3.2; 3.2 of Edition 2008);
——The requirements for component analysis are modified (see 3.3; 3.3 of Edition 2008);
——The designations and chemical compositions of inactive alloys are added (see Annex A);
——Comparison table of previous designations is modified (see Annex B; Annex A of Edition 2008).
This standard was proposed by China Nonferrous Metals Industry Association.
This standard is under the jurisdiction of SAC/TC 243 National Technical Committee on Nonferrous Metals of Standardization Administration of China.
The previous editions of this standard are as follows:
GB/T 3190-1982, GB/T 3190-1996 and GB/T 3190-2008.
Chemical composition of wrought aluminium and aluminium alloys
1 Scope
This standard specifies the chemical composition of wrought aluminium and aluminium alloys.
This standard is applicable to aluminium and aluminium alloy products (sheets, strips, foils, tubes, rods, shapes, wires and forgings, etc.) produced by pressure processing method, as well as ingots and blanks used for them.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 7999 Optical emission spectrometric analysis method of aluminum and aluminum alloys
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 16474 Designation system for wrought aluminium and aluminium alloy
GB/T 17432 Methods for sampling for analyzing the chemical composition of wrought aluminum and aluminum alloys
GB/T 20975 (All parts) Methods for chemical analysis of aluminium and aluminium alloys
GB/T 27675 Designation system for aluminium and aluminium alloys composite sheets, strips and foils
YS/T 870 Chemical analysis of high purity aluminium—Determination of trace impurities—Inductively coupled plasma mass spectrometry
3 Requirements
3.1 Chemical composition
3.1.1 Designation system for the wrought aluminium and aluminium alloy shall meet the requirements of GB/T 16474. Chemical compositions of the wrought aluminium and aluminium alloy shall be in accordance with those specified in Tables 2, 3 and A.1. The limit values given in Tables 2, 3 and A.1 shall be in accordance with those specified in Table 1.
Table 1 Representation of limit values of elements
Limit value of element Representation format of limit value a
<0.001% 0.000X
0.001%~<0.01% 0.00X or 0.00XX
0.01%~<0.10% Refined aluminium 0.0XX
Non-refined aluminium and aluminium alloy 0.0X
0.10%~0.55%b 0.XX
>0.55% 0.X, X.X, XX.X
a The limit value of the sum of Fe and Si with the designation of 1XXX is represented as 0.XX or 1.XX.
b The limit value within the range of 0.30%~0.55% is represented as 0.X0 or 0.X5.
3.1.2 The designation system of composite materials shall meet the requirements of GB/T 27675, and the chemical composition of aluminium alloy materials shall meet the requirements of this standard.
3.1.3 Aluminium and aluminium alloy materials used in food industry shall be controlled to be w(Pb+Hg+Cd+Cr6+)≤0.01% and w(As)≤0.01%.
3.1.4 Aluminium and aluminium alloy materials used in electrical and electronic equipment industry shall be controlled to be w(Pb)≤0.1%, w(Hg)≤0.1%, w(Cd)≤0.01% and w(Cr6+)≤0.1%.
3.1.5 Aluminium and aluminium alloy materials for packaging shall be controlled to be w(Pb+Hg+Cd+Cr6+)≤0.01%.
3.2 Sampling
Methods for sampling for analyzing the chemical composition shall meet the requirements of GB/T 17432.
3.3 Component analysis
3.3.1 Conventional analysis is conducted only for the elements with value requirements for those other than the columns of "Al” and "Other” in Tables 2, 3 and A.1. If the mass fractions of elements under unconventional analysis are suspected to exceed the limit values given in this standard, these elements shall be analyzed by the manufacturer.
3.3.2 The chemical composition analysis methods in Tables 2, 3 and A.1 shall meet the requirements of GB/T 20975, GB/T 7999 or YS/T 870. The arbitration analysis method for the chemical composition of designations with "Co" content less than 0.005% or designations with "Al" content not less than 99.90% shall be the method specified in YS/T 870. The arbitration analysis method for “O” content also may be determined through negotiation between the purchaser and the supplier, and that for other chemical compositions shall be the method specified in GB/T 20975.
3.3.3 When the "total" of "others" in Tables 2, 3 and A.1, the analysis value of each element before summation shall be accurate to 0.XX%.
3.3.4 The content of "Al" (≥99.00%) in Tables 2, 3 and A.1 shall be determined by calculation method:
——When the content of "Al" element is greater than or equal to 99.00%~99.90%, by subtracting the sum of all elements under conventional analysis with the mass fraction not less than 0.010% and the metal elements under unconventional analysis suspected of exceeding 0.010% from 100.00%. The value of each element before summation shall be accurate to 0.0X%;
——When the content of "Al" element is greater than 99.90%~99.99%, by subtracting the sum of all elements under conventional analysis with the mass fraction not less than 0.0010% and the metal elements under unconventional analysis suspected of exceeding 0.0010% from 100.00%. The value of each element before summation shall be accurate to 0.0XX%, and the sum total after the summation shall be rounded off to 0.0X%;
——When the content of "Al" element is greater than 99.99%, by subtracting the sum of all elements under conventional analysis with the mass fraction not less than 0.0010% and the metal elements under unconventional analysis suspected of exceeding 0.0010% from 100.00%. The value of each element before summation shall be accurate to 0.00XX%, and the sum total after the summation shall be rounded off to 0.00X%.
3.3.5 The analysis values are judged by using the rounded-off-value comparison method. Rules of rounding off for numerical values shall be as specified in GB/T 8170, and number of rounding off digits shall be consistent with the limit specified in Tables 2, 3 and A.1 in this standard.
3.3.6 The manufacturer shall monitor and analyze the control elements in 3.1.3, 3.1.4 and 3.1.5 to ensure that the control elements meet the requirements.
4 Others
4.1 See Annex A for the designations and chemical compositions of inactive alloys.
4.2 See Annex B for the comparison between the four-digit designations and the previous designations.
Foreword i
1 Scope
2 Normative references
3 Requirements
4 Others
Annex A (Normative) Designations and chemical compositions of inactive alloys
Annex B (Informative) Comparison between digit designations involved in Table 3 and their previous designations
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 3190-2008 Wrought aluminium and aluminium alloy——Chemical composition. In addition to editorial changes, the following main technical changes have been made with respect to GB/T 3190-2008:
——The normative references are modified (see Clause 2; Clause 2 of Edition 2008);
——79 designations are added in and 6 designations are deleted from the table of international four-digit designations and chemical compositions (see 3.1.1; 3.1.1 of Edition 2008);
——29 designations are added in and the designation 2A97 is deleted from the table of domestic four-digit designations and chemical compositions (see 3.1.1; 3.1.1 of Edition 2008);
——The headers of the table of international four-digit designations and chemical compositions and the table of domestic four-digit designations and chemical compositions are modified, and eight columns of elements "Ag", "B", "Bi", "GA", "Li", "Pb", "Sn" and "V" are added (see 3.1.1; 3.1.1 of Edition 2008);
——The control requirements of aluminium and aluminium alloy materials for packaging are added (see 3.1.5);
——The sampling requirements are modified (see 3.2; 3.2 of Edition 2008);
——The requirements for component analysis are modified (see 3.3; 3.3 of Edition 2008);
——The designations and chemical compositions of inactive alloys are added (see Annex A);
——Comparison table of previous designations is modified (see Annex B; Annex A of Edition 2008).
This standard was proposed by China Nonferrous Metals Industry Association.
This standard is under the jurisdiction of SAC/TC 243 National Technical Committee on Nonferrous Metals of Standardization Administration of China.
The previous editions of this standard are as follows:
GB/T 3190-1982, GB/T 3190-1996 and GB/T 3190-2008.
Chemical composition of wrought aluminium and aluminium alloys
1 Scope
This standard specifies the chemical composition of wrought aluminium and aluminium alloys.
This standard is applicable to aluminium and aluminium alloy products (sheets, strips, foils, tubes, rods, shapes, wires and forgings, etc.) produced by pressure processing method, as well as ingots and blanks used for them.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 7999 Optical emission spectrometric analysis method of aluminum and aluminum alloys
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 16474 Designation system for wrought aluminium and aluminium alloy
GB/T 17432 Methods for sampling for analyzing the chemical composition of wrought aluminum and aluminum alloys
GB/T 20975 (All parts) Methods for chemical analysis of aluminium and aluminium alloys
GB/T 27675 Designation system for aluminium and aluminium alloys composite sheets, strips and foils
YS/T 870 Chemical analysis of high purity aluminium—Determination of trace impurities—Inductively coupled plasma mass spectrometry
3 Requirements
3.1 Chemical composition
3.1.1 Designation system for the wrought aluminium and aluminium alloy shall meet the requirements of GB/T 16474. Chemical compositions of the wrought aluminium and aluminium alloy shall be in accordance with those specified in Tables 2, 3 and A.1. The limit values given in Tables 2, 3 and A.1 shall be in accordance with those specified in Table 1.
Table 1 Representation of limit values of elements
Limit value of element Representation format of limit value a
<0.001% 0.000X
0.001%~<0.01% 0.00X or 0.00XX
0.01%~<0.10% Refined aluminium 0.0XX
Non-refined aluminium and aluminium alloy 0.0X
0.10%~0.55%b 0.XX
>0.55% 0.X, X.X, XX.X
a The limit value of the sum of Fe and Si with the designation of 1XXX is represented as 0.XX or 1.XX.
b The limit value within the range of 0.30%~0.55% is represented as 0.X0 or 0.X5.
3.1.2 The designation system of composite materials shall meet the requirements of GB/T 27675, and the chemical composition of aluminium alloy materials shall meet the requirements of this standard.
3.1.3 Aluminium and aluminium alloy materials used in food industry shall be controlled to be w(Pb+Hg+Cd+Cr6+)≤0.01% and w(As)≤0.01%.
3.1.4 Aluminium and aluminium alloy materials used in electrical and electronic equipment industry shall be controlled to be w(Pb)≤0.1%, w(Hg)≤0.1%, w(Cd)≤0.01% and w(Cr6+)≤0.1%.
3.1.5 Aluminium and aluminium alloy materials for packaging shall be controlled to be w(Pb+Hg+Cd+Cr6+)≤0.01%.
3.2 Sampling
Methods for sampling for analyzing the chemical composition shall meet the requirements of GB/T 17432.
3.3 Component analysis
3.3.1 Conventional analysis is conducted only for the elements with value requirements for those other than the columns of "Al” and "Other” in Tables 2, 3 and A.1. If the mass fractions of elements under unconventional analysis are suspected to exceed the limit values given in this standard, these elements shall be analyzed by the manufacturer.
3.3.2 The chemical composition analysis methods in Tables 2, 3 and A.1 shall meet the requirements of GB/T 20975, GB/T 7999 or YS/T 870. The arbitration analysis method for the chemical composition of designations with "Co" content less than 0.005% or designations with "Al" content not less than 99.90% shall be the method specified in YS/T 870. The arbitration analysis method for “O” content also may be determined through negotiation between the purchaser and the supplier, and that for other chemical compositions shall be the method specified in GB/T 20975.
3.3.3 When the "total" of "others" in Tables 2, 3 and A.1, the analysis value of each element before summation shall be accurate to 0.XX%.
3.3.4 The content of "Al" (≥99.00%) in Tables 2, 3 and A.1 shall be determined by calculation method:
——When the content of "Al" element is greater than or equal to 99.00%~99.90%, by subtracting the sum of all elements under conventional analysis with the mass fraction not less than 0.010% and the metal elements under unconventional analysis suspected of exceeding 0.010% from 100.00%. The value of each element before summation shall be accurate to 0.0X%;
——When the content of "Al" element is greater than 99.90%~99.99%, by subtracting the sum of all elements under conventional analysis with the mass fraction not less than 0.0010% and the metal elements under unconventional analysis suspected of exceeding 0.0010% from 100.00%. The value of each element before summation shall be accurate to 0.0XX%, and the sum total after the summation shall be rounded off to 0.0X%;
——When the content of "Al" element is greater than 99.99%, by subtracting the sum of all elements under conventional analysis with the mass fraction not less than 0.0010% and the metal elements under unconventional analysis suspected of exceeding 0.0010% from 100.00%. The value of each element before summation shall be accurate to 0.00XX%, and the sum total after the summation shall be rounded off to 0.00X%.
3.3.5 The analysis values are judged by using the rounded-off-value comparison method. Rules of rounding off for numerical values shall be as specified in GB/T 8170, and number of rounding off digits shall be consistent with the limit specified in Tables 2, 3 and A.1 in this standard.
3.3.6 The manufacturer shall monitor and analyze the control elements in 3.1.3, 3.1.4 and 3.1.5 to ensure that the control elements meet the requirements.
4 Others
4.1 See Annex A for the designations and chemical compositions of inactive alloys.
4.2 See Annex B for the comparison between the four-digit designations and the previous designations.
Contents of GB/T 3190-2020
Foreword i
1 Scope
2 Normative references
3 Requirements
4 Others
Annex A (Normative) Designations and chemical compositions of inactive alloys
Annex B (Informative) Comparison between digit designations involved in Table 3 and their previous designations
