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See Chinese contents: GB/T 17394.1-2014 GB/T 17394.1-2014: Metallic materials -- Leeb hardness test -- Part 1: Test method
This Part of GB/T 17394 specifies the test principle, test instruments, specimen, test procedure, measurement uncertainty of test results, test report for determining the Leeb hardness of metallic materials by using hardness testers equipped with D, DC, S, E, D+15, DL, C and G impact devices.
