Metallic materials - Knoop hardness test - Part 3: Calibration of reference blocks
|Publication Date:||1 December 2017|
|ICS Code (Mechanical testing of metals):||77.040.10|
This document specifies the method for the calibration of reference blocks to be used for the indirect verification of Knoop hardness testing machines as specified in ISO 4545-2.
The method is applicable only for indentations with long diagonals ≥0,020 mm.