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Full Description

ISO 4545-2:2017 specifies the method of verification and calibration of testing machines for determining Knoop hardness for metallic materials in accordance with ISO 4545-1.

A direct method of verification and calibration is specified for the testing machine, indenter, and the diagonal length measuring system. An indirect verification method using reference blocks is specified for the overall checking of the machine.

If a testing machine is also to be used for other methods of hardness testing, it will be verified independently for each method.

 

Document History

  1. ISO 4545-2:2017

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    Metallic materials - Knoop hardness test - Part 2: Verification and calibration of testing machines

    • Most Recent
  2. ISO 4545-2:2005


    Metallic materials - Knoop hardness test - Part 2: Verification and calibration of testing machines

    • Historical Version
  3. ISO 4545:1993


    Metallic materials - Hardness test - Knoop test

    • Historical Version