MT/T 264-1991Microhardness method of coal (English PDF)

MT/T 264-1991 is the English-translated version of 煤的显微硬度测定方法.

MT/T 264-1991 is the Chinese industry standard "Microhardness method of coal". It was issued on January 20, 1992 by the National Mine Safety Administration, and took effect on July 1, 1992. It is obsolete: it has been replaced by MT/T 264-2025.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

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