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See Chinese contents: GB/T 10561-2023 GB/T 10561-2023: Determination of content of nonmetallic inclusions in steel -- Micrographic method using standard diagrams
This document gives information on the principles, sampling, specimen preparation, determination, result expression, test reports for the evaluation of non-metallic inclusions in steel, using standard rating charts; provides an image analysis method for the determination of non-metallic inclusions (see appendix B). This document is suitable for evaluating the content of non-metallic inclusions, in rolled or forged steel, which has a compression ratio greater than or equal to 3. Note: The charts in this document are not suitable for evaluating certain types of steel (for example: free-cutting steel).
