GB/T 27552-2021 specifies the test method for microhardness of welded joints of metal materials. The standard clarifies the test principle and puts forward requirements for the accuracy of test equipment, indenter characteristics, etc. Detailed instructions for the preparation of welded joint samples, including cutting, grinding, polishing and other steps. At the same time, standardize the microhardness test process, such as test force selection, loading time, Measuring location determination, etc. With this standard, the microhardness of different areas of welded joints can be accurately determined, providing key data support for evaluating welding mass and optimizing welding process.
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 | J33 | ICS | 25.160.40 |
| Release Date | 2021-10-11 00:00:00 | Implementation Date | 2022-05-01 00:00:00 |