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See Chinese contents: GB/T 13299-1991 GB/T 13299-1991: Steel. Determination of microstructure
This Standard specifies the metallographic determination method, determination principles and structural characteristics of free cementite, pearlite of low-carbon deformed steels, banded structure and Widmannstatten structure of steels. This Standard applies to the determination of microstructure of steel plates, steel strips and sections of low-carbon and medium-carbon steels. Other steel types can be determined with reference to this Standard according to relevant standards or agreements.
