
Metallic materials - Knoop hardness test - Part 3:Calibration of reference blocks (ISO 4545-3:2017)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
This document specifies the method for the calibration of reference blocks to be used for the indirectverification of Knoop hardness testing machines as specified in ISO 4545-2.
ISO 4545-3 : 2017 - Identical
EN ISO 4545-3 : 2018 - Identical
ISO 4545-3 : 2017 - Identical
EN ISO 4545-3 : 2018 - Identical