
Metallic materials - Hardness test - Verification of Knoop hardness testing machines
出版:International Organization for Standardization

專家解讀視頻
Gives a direct and an indirect method with test forces up to and including 9,807 N applicable only for indentations with long diagonals longer than or equal to 20 micrometres.
KS B ISO 4546:2003 - Identical
JIS B 7734:1997 - Equivalent
GB/T 18449.2-2001 - Identical