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GB/T 27552-2021 English PDF (GBT27552-2021)

GB/T 27552-2021 English PDF (GBT27552-2021)

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GB/T 27552-2021: Destructive tests on welds in metallic materials -- Microhardness testing of welded joints
This document specifies the general rules, specimen preparation, test procedures, test results and test report of the microhardness testing of welded joints [the range of test force is generally: 0.98 N ~ and lt; 49.03 N (HV 0.1 ~ and lt; HV 5)] performed in accordance with GB/T 4340.1. This document is applicable to the cross-sectional microhardness test of welded joints of metallic materials with a large hardness gradient.

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