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See Chinese contents: GB/T 13299-2022 GB/T 13299-2022: Determination of free cementite, pearlite and Widmanstatten structure in steel
This document specifies the methods of the cutting, preparation and determination of free cementite, pearlite and Widmanstaten structure specimens in steel. This document is applicable to the determination of free cementite, pearlite and Widmanstaten structure in low-carbon and medium-carbon steel plates, steel strips and steel rods (billets). For other steel types, this document may be taken as a reference.
