GB/T 20935-2025 Active National standards

GB/T 20935-2025 Metal materials—Method of electromagnetic acoustic inspection

GB/T 20935-2025 Metal materials—Method of electromagnetic acoustic inspection

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

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Basic Information

Standard Code: GB/T 20935-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Non-destructive testing methods for metals

ICS Name: Nondestructive testing of metal materials

Publish Date: 2025-08-29

Implement Date: 2026-03-01

Pages: 24 pages

Scope

This document specifies the detection principles, general requirements, detection equipment, samples, detection methods, result determination, and detection reports for ultrasonic testing using electromagnetic acoustic transducers (EMAT).
This document is applicable to thickness measurement and surface detection of materials (including ferromagnetic or non-ferromagnetic metal materials) that generate sound waves by electromagnetic methods. For detection of other waveforms, refer to this document for implementation.

Development Information

Word Count: 35 Thousand words Pages: 24 pages

Replace the following standards

GB/T 20935.1-2018 Metal materials—Method of electromagnetic acoustic inspection—Part 1:Standard guide for electromagnetic acoustic transducers(EMATs) GB/T 20935.2-2018 Metal materials—Method of electromagnetic acoustic inspection—Part 2:Standard practice for ultrasonic testing using electromagnetic acoustic transducer(EMAT)techniques GB/T 20935.3-2018 Metal materials—Method of electromagnetic acoustic inspection—Part 3:Standard practice for ultrasonic surface examinations using electromagnetic acoustic transducer(EMAT)techniques

Referenced Standards

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 12604.1-2005 Non-destructive testing—Terminology—Terms used in ultrasonic testing GB/T 12604.1-2020 Non-destructive testing—Terminology—Ultrasonic testing GB/T 12604.6-1990 Terminology for nondestructive testing Eddy current testing GB/T 12604.6-2008 Non-destructive testing—Terminology—Terms used in eddy current testing GB/T 12604.6-2021 Non-destructive testing—Terminology—Eddy current testing

Related Standards

GB/T 2971-1982 Abolished

GB/T 2971-1982 Method of fracture test for carbon and low alloy steels

Publish Date: 1982-03-25

GB/T 5193-1985 Replaced

GB/T 5193-1985 Method of ultrasonic inspection for wrought titanium and titanium alloys products

Publish Date: 1985-05-18

GB/T 5616-1985 Replaced

GB/T 5616-1985 Guidlines for application of conventional nondestructive testing methods

Publish Date: 1985-11-25

GB/T 5677-1985 Replaced

GB/T 5677-1985 Methods of radiographic testing and classification of radiographs for steel castings

Publish Date: 1985-12-04

GB/T 5778-1986 abolished_transferred

GB/T 5778-1986 Determination of hermeticity of expansion alloys

Publish Date: 1986-01-14

GB/T 7233-1987 Replaced

GB/T 7233-1987 Methods for ultrasonic testing and for specifying quality levels of steel castings

Publish Date: 1987-02-04