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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.
Document History
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ISO 4545-1:2023
Metallic materials - Knoop hardness test - Part 1: Test method- Most Recent
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ISO 6507-1:2018
Metallic materials - Vickers hardness test - Part 1: Test method- Historical Version
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ISO 4545-1:2017
viewing
Metallic materials - Knoop hardness test - Part 1: Test method- Historical Version
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ISO 6507-1:2005
Metallic materials - Vickers hardness test - Part 1: Test method- Historical Version
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ISO 4545-1:2005
Metallic materials - Knoop hardness test - Part 1: Test method- Historical Version
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ISO 4516:2002
Metallic and other inorganic coatings - Vickers and Knoop microhardness tests- Historical Version
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ISO 6507-1:1997
Metallic materials - Vickers hardness test - Part 1: Test method- Historical Version
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ISO 4545:1993
Metallic materials - Hardness test - Knoop test- Historical Version
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BS 427:1990
Method for Vickers hardness test and for verification of Vickers hardness testing machines- Historical Version
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BS 427-2:1962
Method for Vickers hardness test-Verification of the testing machine- Historical Version
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BS 427-1:1961
Method for Vickers hardness test-Testing of metals- Historical Version