GB/T 38769-2020: Metallic materials - Measurement of fracture toughness at impact loading rates using precracked Charpy-type test pieces

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Scope

This Standard stipulates the principles, specimens, testing machines, test procedures
and measurements, calculation of fracture mechanical parameters and test reports of
instrumental impact and evaluation of fracture toughness of prefabricated cracked
Charpy specimens of metal materials by fracture mechanics methods.
This Standard is applicable to the determination of fracture toughness of the
prefabricated cracked Charpy-type specimens of metallic materials.

Basic Data

Standard ID	GB/T 38769-2020 (GB/T38769-2020)
Description (Translated English)	Metallic materials - Measurement of fracture toughness at impact loading rates using precracked Charpy-type test pieces
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H22
Classification of International Standard	77.040.10
Word Count Estimation	34,375
Date of Issue	2020-04-28
Date of Implementation	2020-11-01
Quoted Standard	GB/T 229; GB/T 3808; GB/T 19748; GB/T 21143; GB/T 30069.2
Adopted Standard	ISO 26843-2015, MOD
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration
Summary	This standard specifies the principles, specimens, testing machines, test procedures and measurements, calculation of fracture mechanics parameters, and test reports for instrumented impact of pre-cracked Charpy specimens of metallic materials and evaluation of their fracture toughness by means of fracture mechanics. This standard applies to the determination of the impact fracture toughness of Charpy specimens with pre-cracked metallic materials.