ISO 4545-1:2017
Metallic materials - Knoop hardness test - Part 1: Test method
standard by International Organization for Standardization, 12/01/2017
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DIN EN ISO 4545-1
Metallic materials - Knoop hardness test - Part 1: Test method (ISO 4545-1:2017)- This is the most recent version of this document.
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BS EN ISO 4545-1:2018
Metallic materials. Knoop hardness test-Test method- This is the most recent version of this document.
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DIN EN ISO 4545-1
Metallic materials - Knoop hardness test - Part 1: Test method (ISO 4545-1:2017)- Historical Version
About This Item
Full Description
ISO 4545-1:2017 specifies the Knoop hardness test method for metallic materials for test forces from 0,009 807 N to 19,613 N.
The Knoop hardness test is specified in this document for lengths of indentation diagonals ≥0,020 mm. Using this method to determine Knoop hardness from smaller indentations is outside the scope of this document as results would suffer from large uncertainties due to the limitations of optical measurement and imperfections in tip geometry. ISO 14577-1 allows the determination of hardness from smaller indentations.
A periodic verification method is specified for routine checking of the testing machine in service by the user.
Special considerations for Knoop testing of metallic coatings can be found in ISO 4516.
