GB/T 21838.4-2020 focuses on the instrumented indentation test of metal hardness of materials and material parameters, and stipulates the test methods for metal and Non-metallic coatings. The standard covers the test principle, equipment, sample requirements, test procedures and result processing, etc. It provides specifications for scientific and accurate testing of coating hardness and material parameters, helps evaluate coating performance, and provides technical basis for related production, mass testing and other links.
| Status | Active |
|---|---|
| CCS | H22 | ICS | 77.040.10 |
| Release Date | 2020-12-14 00:00:00 | Implementation Date | 2021-07-01 00:00:00 |