GB/T 21638-2025 Active National standards

GB/T 21638-2025 Microbeam analysis—Guidelines for electron beam microanalysis of defects in steel materials

Publish Date: 2025-03-28 Implement Date: 2025-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 21638-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Electrochemical, thermochemical, and optical analytical instruments

ICS Name: Other standards related to analytical chemistry

Publish Date: 2025-03-28

Implement Date: 2025-10-01

Pages: 12 pages

Scope

This document specifies the instrumentation, analysis methods and procedures, and analysis reports for analyzing defects in steel materials using electron beam microscopy.
This document is applicable to the electron beam microscopy analysis of internal and surface defects in steel materials.

Development Information

Word Count: 13 Thousand words Pages: 12 pages

Replace the following standards

GB/T 21638-2008 Guide for electron beam microanalysis of defect in steel materials

Referenced Standards

GB/T 4340.1-1999 Metallic materials—Vickers hardness test—Part 1:Test method GB/T 4340.1-2009 Metallic materials—Vickers hardness test—Part 1:Test method GB/T 4340.1-2024 Metallic materials—Vickers hardness test—Part 1:Test method GB/T 10561-1989 Steel—Determination of content of non-metallic inclusion—Micrographic method using standard diagrams GB/T 10561-2005 Steel—Determination of content of nonmetallic inclusions—Micrographic method using standards diagrams GB/T 10561-2023 Determination of content of nonmetallic inclusions in steel—Micrographic method using standard diagrams GB/T 13299-1991 Steel—Determination of microstructure GB/T 13299-2022 Determination of free cementite,pearlite and Widmanstaten structure in steel GB/T 15074-1994 General guide for EPMA quantitative analysis GB/T 15074-2008 General guide of quantitative analysis by EPMA GB/T 15074-2025 General specification for EPMA quantitative analysis GB/T 17359-1998 General specification of X-ray EDS Quantitative analysis for EPMA and SEM GB/T 17359-2012 Microbeam analysis—Quantitative analysis using energy dispersive spectrometry GB/T 17359-2023 Microbeam analysis—Quantitative analysis using energy-dispersive spectrometry (EDS) for elements with an atomic number of 11 (Na) or above GB/T 19501-2004 General guide for electron backscatter diffraction analysis GB/T 19501-2013 Microbeam analysis—General guide for electron backscatter diffraction analysis GB/T 30703-2014 Microbeam analysis—Guidelines for orientation measurement using electron backscatter diffraction GB/T 34172-2017 Microbeam analysis—Electron backscatter diffraction—Phase analysis method of metal and alloy GB/T 34474.1-2017 Determination of banded structure of steel—Part 1:Micrographic method using standards diagrams GB/T 38532-2020 Microbeam analysis—Electron backscatter diffraction—Measurement of average grain size JY/T 0584-2020 Scanning electron microscopy analysis method general principles

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