GB/T 3250-1982
Replaced
GB/T 20975.18-2020
Active
National standards
GB/T 20975.18-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 18:Determination of chromium content
GB/T 20975.18-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 18:Determination of chromium content
Basic Information
Standard Code:
GB/T 20975.18-2020
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Analysis methods for light metals and their alloys
ICS Name:
Aluminum and aluminum alloys
Publish Date:
2020-06-02
Implement Date:
2021-04-01
Publisher:
国家市场监督管理总局、国家标准化管理委员会
Technical Committee:
全国有色金属标准化技术委员会(SAC/TC 243)
Pages:
15 pages
Scope
GB/T 20975的本部分规定了萃取分离-二苯基碳酰二肼分光光度法、火焰原子吸收光谱法、过硫酸铵氧化-硫酸亚铁铵滴定法测定铝及铝合金中铬含量，水浸取-二苯基碳酰二肼分光光度法测定铝及铝合金中六价铬含量。
本部分适用于铝及铝合金中铬含量和铝及铝合金中六价铬含量的仲裁测定。萃取分离-二苯基碳酰二肼分光光度法测定铬测定范围:0.000 1%～0.60%；火焰原子吸收光谱法测定铬测定范围:0.010%～0.60%；过硫酸铵氧化-硫酸亚铁铵滴定法测定铬测定范围:2.00%～23.00%；水浸取-二苯基碳酰二肼分光光度法测定六价铬测定范围:0.000 1%～0.10%。
注: 铬质量分数为0.010%～0.60%时，采用萃取分离-二苯基碳酰二肼分光光度法为仲裁方法。
Development Information
Drafting Units:
广东省工业分析检测中心、中铝郑州有色金属研究院有限公司、有色金属技术经济研究院、东北轻合金有限责任公司、长沙矿冶研究院有限责任公司、贵州省分析测试研究院、昆明冶金研究院、北矿检测技术有限公司、河北四通新型金属材料股份有限公司、山东兖矿轻合金有限公司、国家再生有色金属橡塑材料质量监督检验中心、中铝矿业有限公司、中铝材料应用研究院有限公司、北京有色金属与稀土应用研究所
Drafting Persons:
张永进、谢辉、张元克、徐思婷、席欢、熊晓燕、石磊、周兵、王芳、张天姣、马艳红、许彬、龙安禄、刘维理、易嘉、罗海霞、薛宁、韦艳琴、韩正乾、刘贝贝、郝跃鹏、张娟、刘飞、张金娥、王雪
Same series standard
GB/T 20975.3-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 3:Determination of copper content
GB/T 20975.4-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 4:Determination of iron content
GB/T 20975.5-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 5:Determination of silicon content
GB/T 20975.6-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 6:Determination of cadmium content
GB/T 20975.7-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 7:Determination of manganese content
GB/T 20975.8-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 8:Determination of zinc content
GB/T 20975.9-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 9:Determination of lithium content—Flame atomic absorption spectrometry
GB/T 20975.10-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 10:Determination of tin content
GB/T 20975.12-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 12:Determination of titanium content
GB/T 20975.13-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 13:Determination of vanadium content
GB/T 20975.14-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 14:Determination of nickel content
GB/T 20975.15-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 15:Determination of boron content
GB/T 20975.16-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 16:Determination of magnesium content
GB/T 20975.17-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 17:Determination of strontium content
GB/T 20975.19-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 19:Determination of zirconium content
GB/T 20975.20-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 20:Determination of gallium content—Butyrhodamine B spectrophotometric method
GB/T 20975.21-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 21:Determination of calcium content
GB/T 20975.22-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 22:Determination of beryllium content
GB/T 20975.23-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 23:Determination of antimony content
GB/T 20975.24-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 24:Determination of total rare earth content
GB/T 20975.25-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 25:Determination of elements content—Inductively coupled plasma atomic emission spectrometric method
GB/T 20975.32-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 32:Determination of bismuth content
GB/T 20975.33-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 33:Determination of potassium content—Flame atomic absorption spectrometric method
GB/T 20975.34-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 34:Determination of sodium content—Flame atomic absorption spectrometric method
GB/T 20975.35-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 35:Determination of tungsten content—Thiocyanate spectrophotometric method
GB/T 20975.36-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 36:Determination of silver content—Flame atomic absorption spectrometry
GB/T 20975.37-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 37:Determination of niobium content
Replace the following standards
Referenced Standards
Related Standards
GB/T 3251-1982
Replaced
GB/T 3251-1982 Aluminium and aluminium alloys—Compression test method for tubes
GB/T 3252-1982
Replaced
GB/T 3252-1982 Aluminium and aluminium alloys Shear test method for rivet wire and rivets
GB/T 3172-1982
Abolished
GB/T 3172-1982 Determination of adhesion ratio of aluminium powder Steel plate method
GB/T 3173-1982
Abolished
GB/T 3173-1982 Determination of coating surface of aluminium powder on water
GB/T 4438-1984
Replaced