GB/T 9790-2021 specifies the Vickers and Knoop microhardness test methods for metal and Miscellaneous inorganic coatings in metal materials. The standard clarifies the test principle, equipment, sample preparation, test procedures and result calculation, etc., standardizes the coating hardness testing process, and provides a unified standard for accurately determining the hardness of metal and inorganic coatings and evaluating their mechanical properties. It is of great significance to ensure the mass and performance of coatings.
| Status | Active |
|---|---|
| CCS | H22 | ICS | 77.040.10 |
| Release Date | 2021-04-30 00:00:00 | Implementation Date | 2021-11-01 00:00:00 |