GB/T 3190-2020 Chemical composition of wrought aluminium and aluminium alloys English
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
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%.
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
GB/T 3190-2020 Chemical composition of wrought aluminium and aluminium alloys English
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
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%.
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
