GB/T 20975.14-2020 Active
GB/T 20975.14-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 14:Determination of nickel content
Abstract
This part of GB/T 20975 specifies the determination of nickel content in aluminum and aluminum alloys by the spectrophotometric method of diketone oxime, the flame atomic absorption spectrometry method, the Na2EDTA titration method, and the diketone oxime gravimetric method.
This part is applicable to the arbitration determination of nickel content in aluminum and aluminum alloys. The determination range of the spectrophotometric method of diketone oxime is 0.001% to 0.010%; the determination range of the flame atomic absorption spectrometry method is 0.005% to 3.00%; the determination range of the Na2EDTA titration method is 5.00% to 25.00%; and the determination range of the diketone oxime gravimetric method is 5.00% to 30.00%.
Note: When the nickel mass fraction is > 0.005% to 0.010%, the flame atomic absorption spectrometry method is used as the arbitration method; when the nickel mass fraction is 5.00% to 25.00%, the Na2EDTA titration method is used as the arbitration method.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 20975.14-2020 |
| CCS | Analysis methods for light metals and their alloys |
| ICS | Aluminum and aluminum alloys |
| Implement Date | 2021-04-01 |