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See Chinese contents: GB/T 42670-2023 GB/T 42670-2023: Test method for Rockwell hardness of carbon materials
This document describes the principle, instrument and equipment, specimens, test procedures, precision and test report of the test method for Rockwell hardness of carbon materials. This document is applicable to the determination of Rockwell hardness of carbon materials with aggregate particles less than 0.8 mm. Other carbon materials may take this as a reference.
