GB/T 1979-2025 Active National standards

GB/T 1979-2025 Evaluation of macrostructural defects in structural steels—Acid etching method and ultrasonic testing method

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 1979-2025

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: 88 pages

Scope

本文件描述了用酸浸法和超声检测法评定结构钢低倍组织缺陷，包括酸浸法的原理、缺陷分类、特征、产生原因及评定原则、评级图分类及适用范围，以及超声检测法的原理、仪器和设备、对比试块、检测条件和步骤、结果评定。
本文件适用于碳素结构钢、合金结构钢、弹簧钢钢材(锻、轧坯)低倍组织缺陷的评定。其他钢低倍组织缺陷的评定参照本文件执行。

Development Information

Drafting Units:

宝武特种冶金有限公司、东北特殊钢集团股份有限公司、首钢集团有限公司、江苏永钢集团有限公司、抚顺特殊钢股份有限公司、钢铁研究总院有限公司、日照市质量检验检测研究院(国家碳素结构钢质检中心)、冶金工业信息标准研究院

Drafting Persons:

孟吉炜、顾艳、鞠新华、邵长禄、李继康、陈远清、谷强、黄秋纲、牟雪萍、王琳、戚胜、崔桂彬、张勇、唐佳勇、曹丽红、吴滨、颜丞铭、葛安宁

Word Count: 150 Thousand words Pages: 88 pages

Replace the following standards

GB/T 1979-2001 Standard diagrams for macrostructure and defect of structural steels GB/T 7736-2008 Ultrasonic inspecting method for macro-structure and imperfection of steel

Referenced Standards

GB/T 226-1991 Etch test for macrostructure and defect of steels GB/T 226-2015 Test method for macrostructure and defect of steel by etching GB/T 9445-1999 Qualification and certification for nondestructive testing personnel GB/T 9445-2005 Non-destructive testing—Qualification and certification of personnel GB/T 9445-2008 Non-destructive testing—Qualification and certification of personnel GB/T 9445-2015 Non-destructive testing—Qualification and certification of NDT personnel GB/T 9445-2024 Non-destructive testing—Qualification and certification of personnels GB/T 23905-2009 Non-destructive testing—Blocks for ultrasonic testing GB/T 27664.2-2011 Non-destructive testing—Characterization and verification of ultrasonic test equipment—Part 2:Probes JJG 746-2004 Ultrasonic Flaw Detectors JJG 746-2024 Ultrasonic Flaw Detectors GB/T 27664.2-2026 Non-destructive testing instruments—Characterization and verification of ultrasonic test equipment—Part 2:Probes

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