GB/T 5686.9-2023 (English Version)

Standard No.: GB/T 5686.9-2023
Language: Chinese, Available in English version
Release Date: 2023
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 5686.9-2023

Scope: This document describes the method for determining the content of manganese, silicon, iron and phosphorus in ferromanganese, manganese silicon alloy, ferromanganese nitride and metallic manganese by wavelength dispersive X-ray fluorescence spectrometry (fused glass disk method). This document is applicable to the determination of manganese, silicon, iron and phosphorus content in ferromanganese, manganese silicon alloy, ferromanganese nitride and metallic manganese. The determination range of each element is shown in Table 1.

Introduction

1. Standard Overview

This standard specifies the method for determining the manganese, silicon, phosphorus and iron contents in ferromanganese, manganese silicon alloy, ferromanganese nitride and metallic manganese by wavelength dispersive X-ray fluorescence spectrometry (fused glass plate method). This method is applicable to the determination of the mass fraction of each element in the above materials. The determination range is shown in the following table:

Analytical elements	Determination range (mass fraction) %
Manganese (Mn)	60.00~98.00
Silicon (Si)	0.15~28.00
Iron (Fe)	1.50~23.00
Phosphorus (P)	0.01~0.45

2. Background and significance of standard formulation

Manganese-based ferroalloys play an important role in the steel industry, and their performance depends on the precise ratio of elements. This standard fills the gap in existing detection methods, provides efficient and accurate analytical methods, and provides support for product quality control and production optimization.

3. Comparison of standard frameworks

Standard elements	GB/T 5686.9—2023	Comparative analysis
Detection method	X-ray fluorescence spectrometry (molten glass sheet method)	Compared with traditional chemical titration, it is more efficient and has a wider range of applications.
Sample preparation	High-temperature molten cast glass sheet	Ensures uniform distribution of elements and detection accuracy.
Precision requirements	Repeatability limit r, reproducibility limit R (see standard for specific values)	Strictly control test errors to improve the reliability of results.

4. Implementation suggestions

4.1 Instrument selection and calibration

Select an X-ray fluorescence spectrometer that complies with GB/T16597 to ensure stable equipment performance. Regularly conduct standardization inspections and use standard samples to correct instrument drift.

4.2 Precautions for sample preparation

Strictly control the high-temperature melting process to avoid deformation or contamination of the crucible. Accurately weigh reagents and samples to ensure consistent quality of glass sheets.

4.3 Data processing and result reporting

Perform numerical rounding in accordance with GB/T8170 to ensure that the results meet the requirements of the specification. Record the test conditions, abnormal phenomena and factors that may affect the results in detail.

GB/T 5686.9-2023 Referenced Document

GB/T 15000.3 Standard sample working guidelines part 3: Standard sample determination and homogeneity and stability evaluation
GB/T 16597 Analytical methods of metallurgical products—General rule for X-ray fluorescence spectrometric methods
GB/T 28372 Ferroalloys.Sampling and preparation of samples.General rules
GB/T 6379.1 Accuracy(trueness and precision)of measurement methods and results Part 1:General principles and definitions
GB/T 6379.2 Accuracy(trueness and precision)of measurement methods and results-Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
YB/T 082 Technical specifications for standard samples for analysis of metallurgical products

GB/T 5686.9-2023 history

2023 GB/T 5686.9-2023 Determination of the contents of ferromanganese, manganese-silicon alloys, ferromanganese nitride and metallic manganese-manganese, silicon, phosphorus and iron by wavelength dispersive X-ray fluorescence spectrometry (cast glass plate method)

GB/T 5686.9-2023