GB/T 38770-2020
ActiveSpheroidite examination and grading for low and medium carbon steels
低、中碳钢球化组织检验及评级
Application Summary AI generated
This standard specifies the metallographic examination method and grading criteria for spheroidized microstructures in low and medium carbon steels. It is applied in the manufacturing and quality control of automotive, machinery, and fastener components, particularly after spheroidizing annealing treatments. The standard ensures consistent evaluation of spheroidite quality to optimize cold forming performance and mechanical properties.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.