The MT/T 264-1991 standard refers to ISO 6507/3 "Vickers hardness test for metallic materials" Part 3, which stipulates the microhardness determination method of coal. It is suitable for the determination of Vickers hardness of bituminous coal and anthracite coal, including sample preparation, instrument calibrating, determination of measurement conditions, measurement steps and result statement, etc., which provides technical support for the evaluation of hardness characteristics of coal materials.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | (D26) 煤岩 | ICS | |
| Release Date | 1992-01-20 00:00:00 | Implementation Date | 1992-07-01 00:00:00 |