The QJ 482-1990 standard specifies the test method for the microhardness of metal plating coatings. It is suitable for the hardness test of plating coatings for aerospace products and other products, and is carried out using a microhardness tester. The standard describes in detail the sample preparation, operating procedures, hardness calculation formula and the content of the test report before the test. The surface of the sample is required to be clean and flat, and the appropriate load is selected according to the thickness of the coating to ensure the accuracy of the test results. Standardized operation guidance is provided for the hardness test of metal plating coatings.
| Status | Active |
|---|---|
| CCS | (A29) 材料防护 | ICS |
| Release Date | Implementation Date | 1991-06-01 00:00:00 |