GB/T 42513.1-2023 Methods of chemical analysis of nickel alloys - Part 1: Determination of chromium content by ferrous ammonium sulfate potentiometric titration (English Version)
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 42513.1-2023
Introduction
GB/T 42513.1-2023 is a Chinese national standard that specifies the chemical analysis method for determining the chromium content in nickel alloys. This standard specifically focuses on the use of the ammonium ferrous sulfate potentiometric titration method.
The determination of chromium content is an important aspect of quality control in the production and application of nickel alloys. The ammonium ferrous sulfate potentiometric titration method described in this standard offers a reliable and accurate means of measuring the chromium content.
The method involves the titration of a sample solution containing the nickel alloy with a standardized ammonium ferrous sulfate solution. The endpoint of the titration is determined by the change in potential, which is monitored using a suitable indicator electrode. The chromium content is then calculated based on the volume of the titrant used.
This standard provides detailed procedures and guidelines for the preparation of sample solutions, selection of indicator electrodes, and calculation of results. It also includes information on the calibration and verification of the titration apparatus to ensure accurate measurements.
By adhering to the requirements outlined in GB/T 42513.1-2023, manufacturers and laboratories can ensure the quality and consistency of nickel alloys by accurately determining the chromium content. This standard serves as an essential tool for industries involved in the production, testing, and research of nickel alloys.
GB/T 42513.1-2023 history
2023GB/T 42513.1-2023 Methods of chemical analysis of nickel alloys - Part 1: Determination of chromium content by ferrous ammonium sulfate potentiometric titration