GB/T 27552-2021 Active
GB/T 27552-2021 Destructive tests on welds in metallic materials—Microhardness testing of welded joints
Abstract
This document specifies the general principles, sample preparation, test procedures, test results, and test reports for microhardness testing of welded joints according to GB/T 4340.1 [with a test force range typically of 0.98 N to <49.03 N (HV 0.1 to
Note: The hardness test ensures that the maximum and minimum hardness of the weld metal and the two adjacent base metals (in the case of dissimilar materials) can be measured.
This document is not applicable to hardness tests with a test force greater than or equal to 49.03 N as specified in GB/T 2654.
This document is not applicable to Vickers hardness testing of resistance spot welded, convex welded, and seam welded joints as specified in GB/T 39082.
This document is not applicable to hardness testing of samples of narrow welded joints such as laser and electron beam welded joints, for which the hardness test is conducted in accordance with GB/T 35085.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 27552-2021 |
| CCS | Welding and cutting |
| ICS | \nWelding joints |
| Implement Date | 2022-05-01 |