GB/T 34474-2025 Active National standards

GB/T 34474-2025 Methods for determination of banded structure of steels

Publish Date: 2025-08-29 Implement Date: 2026-03-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 34474-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Metallographic examination methods

ICS Name: Other testing methods for metal materials

Publish Date: 2025-08-29

Implement Date: 2026-03-01

Publisher: 国家市场监督管理总局、国家标准化管理委员会

Technical Committee: 全国钢标准化技术委员会(SAC/TC 183)

Pages: 52 pages

Scope

本文件描述了标准评级图法、定量法和硬度法三种钢中带状组织评定方法，包括方法概述、设备、取样、试样制备、评定方法、检验结果和检测报告。
本文件适用于经塑性变形的钢中带状组织的检验与评定。

Development Information

Drafting Units:

抚顺特殊钢股份有限公司、首钢集团有限公司、联峰钢铁(张家港)有限公司、钢铁研究总院有限公司、本钢板材股份有限公司、冶金工业信息标准研究院、南京航空航天大学

Drafting Persons:

程丽杰、温娟、曹丽红、鞠新华、李继康、余超、田玉伟、王琳、谷强、孟杨、张莎莎、冯长伟、来萍、施嘉凯、李碧波、海超、颜丞铭、束长青

Word Count: 82 Thousand words Pages: 52 pages

Replace the following standards

GB/T 34474.1-2017 Determination of banded structure of steel—Part 1:Micrographic method using standards diagrams GB/T 34474.2-2018 Determination of banded structure of steel—Part 2:Quantitative method

Referenced Standards

GB/T 225-1988 Steel-hardenability test by end quenching(Jominy test) GB/T 225-2006 Steel—Hardenability test by end quenching (Jominy test) 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 13298-1991 Metal—Inspection method of microstructure GB/T 13298-2015 Inspection methods of microstructure for metals GB/T 15749-1995 Manual measuring method in quantitative metallography GB/T 15749-2008 Measuring method in quantitative metallography GB/T 18449.1-2001 Metallic knoop hardness test Part 1:Test method GB/T 18449.1-2009 Metallic materials—Knoop hardness test—Part 1:Test method GB/T 18449.1-2024 Metallic materials—Knoop hardness test—Part 1:Test method GB/T 30067-2013 Standard terminology relating to metallography GB/T 33362-2016 Metallic materials—Conversion of hardness values

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