
Metallic materials – Knoop hardness test – Part 1: Test method (ISO 4545-1:2017); German version EN ISO 4545-1:2018
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
This part of ISO 4545 specifies the test method for Knoop hardness testing on metallic materials for test loads from 0.009 807 N to 19.614 N.?The procedure is recommended only for impressions with diagonals> = 0.020 mm.