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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
ICS 77.150.10
H 60
GB
中华人民共和国国家标准
GB/T 3190—2020
代替GB/T 3190—2008
变形铝及铝合金化学成分
Chemical composition of wrought aluminium and aluminium alloys
2020-03-31发布 2021-02-01实施
国家市场监督管理总局
国家标准化管理委员会 发布
前言
本标准按照GB/T 1.1—2009给出的规则起草。
本标准代替GB/T 3190—2008《变形铝及铝合金化学成分》，与GB/T 3190—2008相比，除编辑性修改外主要技术变化如下：
——修改了规范性引用文件(见第2章，2008年版的第2章)；
——国际四位数字牌号及化学成分表中增加了79个牌号，删除了6个牌号(见3.1.1，2008年版的3.1.1)；
——国内四位字符牌号及化学成分表中增加了29个牌号，删除了2A97牌号(见3.1.1，2008年版的3.1.1)；
——修改了国际四位数字牌号及化学成分表和国内四位字符牌号及化学成分表的表头，增加了“Ag”“B”“Bi”“Ga”“Li”“Pb”“Sn”“V”8个元素栏(见3.1.1，2008年版的3.1.1)；
——增加了包装用铝及铝合金材料的控制要求(见3.1.5)；
——修改了取样要求(见3.2，2008年版的3.2)；
——修改了成分分析要求(见3.3，2008年版的3.3)；
——增加了不活跃合金的牌号和化学成分(见附录A)；
——修改了《曾用牌号对照表》(见附录B，2008年版的附录A)。
本标准由中国有色金属工业协会提出。
本标准由全国有色金属标准化技术委员会(SAC/TC 243)归口。
本标准所代替标准的历次版本发布情况为：
GB/T 3190—1982、GB/T 3190—1996、GB/T 3190—2008。
变形铝及铝合金化学成分
1 范围
本标准规定了变形铝及铝合金的化学成分。
本标准适用于以压力加工方法生产的铝及铝合金加工产品(板、带、箔、管、棒、型、线和锻件等)及其所用的铸锭和坯料。
2 规范性引用文件
下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件，仅注日期的版本适用于本文件。凡是不注日期的引用文件，其最新版本(包括所有的修改单)适用于本文件。
GB/T 7999 铝及铝合金光电直读发射光谱分析方法
GB/T 8170 数值修约规则与极限数值的表示和判定
GB/T 16474 变形铝及铝合金牌号表示方法
GB/T 17432 变形铝及铝合金化学成分分析取样方法
GB/T 20975(所有部分) 铝及铝合金化学分析方法
GB/T 27675 铝及铝合金复合板、带、箔材牌号表示方法
YS/T 870 高纯铝化学分析方法 痕量杂质元素含量的测定 电感耦合等离子体质谱法
3 要求
3.1 化学成分
3.1.1 变形铝及铝合金牌号表示方法应符合GB/T 16474的规定。变形铝及铝合金的化学成分应符合表2、表3、表A.1的规定。表2、表3和表A.1中极限数值表示应符合表1规定。
表1 元素极限数值的表示
元素极限数值 极限数值表示形式a
＜0.001％ 0.000X
0.001％～＜0.01％ 0.00X或0.00XX
0.01％～＜0.10％ 精铝 0.0XX
非精铝及铝合金 0.0X
0.10％～0.55％b 0.XX
＞0.55％ 0.X、X.X、XX.X
a 1XXX牌号Fe、Si之和的极限数值表示为0.XX或1.XX。
b 0.30％～0.55％范围内的极限数值表示为0.X0或0.X5。
3.1.2 复合材料牌号表示方法应符合GB/T 27675的规定，其中的铝合金材料化学成分应符合本标准的规定。
3.1.3 食品行业用铝及铝合金材料应控制w(Pb＋Hg＋Cd＋Cr6＋)≤0.01％、w(As)≤0.01％。
3.1.4 电器、电子设备行业用铝及铝合金材料应控制w(Pb)≤0.1％、w(Hg)≤0.1％、w(Cd)≤0.01％、w(Cr6＋)≤0.1％。
3.1.5 包装用铝及铝合金材料应控制w(Pb＋Hg＋Cd＋Cr6＋)≤0.01％。
3.2 取样
化学成分分析取样应符合GB/T 17432的规定。
3.3 成分分析
3.3.1 仅对表2、表3、表A.1中“Al”及“其他”栏之外有数值规定的元素进行常规分析。当怀疑非常规分析元素的质量分数超出了本标准的限定值时，生产者应对这些元素进行分析。
3.3.2 表2、表3、表A.1的化学成分分析方法应符合GB/T 20975、GB/T 7999或YS/T 870的规定，“Co”元素含量小于0.005％的牌号或“Al”元素含量不小于99.90％的牌号化学成分仲裁分析应采用YS/T 870规定的方法，“O”元素含量仲裁分析也可供需双方协商确定，其余化学成分仲裁分析应采用GB/T 20975规定的方法。
3.3.3 计算表2、表3、表A.1中“其他”的“合计”时，求和前各元素分析数值应表示到0.XX％。
3.3.4 表2、表3、表A.1中≥99.00％的“Al”元素含量采用计算法确定：
——当“Al”元素含量≥99.00％～99.90％时，用100.00％减去所有质量分数不小于0.010％的常规分析元素与怀疑超量的非常规分析的金属元素的和，求和前各元素数值应表示到0.0X％；
——当“Al”元素含量＞99.90％～99.99％时，用100.00％减去所有质量分数不小于0.0010％的常规分析元素与怀疑超量的非常规分析的金属元素的和，求和前各元素数值要表示到0.0XX％，求和后将总和修约到0.0X％；
——当“Al”元素含量＞99.99％时，用100.00％减去所有质量分数不小于0.0010％的常规分析元素与怀疑超量的非常规分析的金属元素的和，求和前各元素数值要表示到0.00XX％，求和后将总和修约到0.00X％。
3.3.5 分析数值的判定采用修约比较法，数值修约规则按GB/T 8170的有关规定进行，修约数位应与本标准的表2、表3、表A.1规定的极限数位一致。
3.3.6 生产厂应对3.1.3、3.1.4和3.1.5的控制元素进行监控分析，确保控制元素符合要求。
4 其他
4.1 不活跃合金的牌号和化学成分见附录A。
4.2 四位字符牌号与曾用牌号的对照关系参见附录B。
表2 国际四位数字牌号及化学成分
序号 牌号 化学成分(质量分数)/％
Si Fe Cu Mn Mg Cr Ni Zn Ti Ag B Bi Ga Li Pb Sn V Zr 其他 Al
单个 合计
余量
注1：表中元素含量为单个数值时，“Al”元素含量为最低限，其他元素含量为最高限。
注2：元素栏中“—”表示该位置不规定极限数值，对应元素为非常规分析元素，“其他”栏中“—”表示无极限数值要求。
注3：“其他”表示表中未规定极限数值的元素和未列出的金属元素。
注4：“合计”表示不小于0.010％的“其他”金属元素之和。
a 焊接电极及填料焊丝的w(Be)≤0.0003％。
b 主要用作包覆材料。
c 经供需双方协商并同意，挤压产品与锻件的w(Zr＋Ti)最大可达0.20％。
d 焊接电极及填料焊丝的w(Be)≤0.0005％。
e 硅质量分数为镁质量分数的45％～65％。
f 经供需双方协商并同意，挤压产品与锻件的w(Zr＋Ti)最大可达0.25％。
g 见相应空白栏中要求。
表3 国内四位字符牌号及化学成分
序号 牌号 化学成分(质量分数)/％ 备注
Si Fe Cu Mn Mg Cr Ni Zn Ti Ag B Bi Ga Li Pb Sn V Zr 其他 Al
单个 合计
余量
注1：表中元素含量为单个数值时，“Al”元素含量为最低限，其他元素含量为最高限。
注2：元素栏中“—”表示该位置不规定极限数值，对应元素为非常规分析元素，“其他”栏中“—”表示无极限数值要求。
注3：“其他”表示表中未规定极限数值的元素和未列出的金属元素。
注4：“合计”表示不小于0.010％的“其他”金属元素之和。
a “Be”元素均按规定加入，其含量可不做分析。
b 铆钉线材的w(Zn)≤0.03％。
c 见相应空白栏中要求。
d 以“C”替代“B”时，“C”元素含量应为0.0001％～0.05％。
e 以“C”替代“B”时，“C”元素含量应为0.0001％～0.002％。
附 录 A
(规范性附录)
不活跃合金的牌号及化学成分
不活跃合金的牌号及化学成分见表A.1。
表A.1 不活跃合金的牌号及化学成分
序号 牌号 化学成分(质量分数)/％
Si Fe Cu Mn Mg Cr Ni Zn Ti Ag B Bi Ga Li Pb Sn V Zr 其他 Al
单个 合计
余量
注1：表中元素含量为单个数值时，“Al”元素含量为最低限，其他元素含量为最高限。
注2：元素栏中“—”表示该位置不规定极限数值，对应元素为非常规分析元素，“其他”栏中“—”表示无极限数值要求。
注3：“其他”表示表中未规定极限数值的元素和未列出的金属元素。
注4：“合计”表示不小于0.010％的“其他”金属元素之和。
a 焊接电极及填料焊丝的w(Be)≤0.0003％。
b RE表示以Ce、La、Y为主的混合稀土元素。
c RE表示以Ce、La为主的混合稀土元素。
d 见相应空白栏中要求。
附 录 B
(资料性附录)
表3所涉字符牌号与其曾用牌号对照表
表3所涉字符牌号与其曾用牌号对照表见表B.1。
表B.1 表3所涉字符牌号与其曾用牌号对照表
表3所涉字符牌号 曾用牌号 表3所涉字符牌号 曾用牌号 表3所涉字符牌号 曾用牌号
