Hardness Tester Test Block Calibration

At Spectrographic as a metallurgical suppliers we offer re-calibration of Hardness Tester test blocks.  There are different types of hardness test reference blocks which relate to the testing for hardness.  These are Rockwell, Vickers, Micro Vickers, Knoop, Brinell and Leeb Test Blocks.


The BS EN ISO 6507-3:2005 relates to metallic materials, Vickers hardness test and calibration of reference test blocks.  The extracted information of this standard Calibration of reference blocks appears in section 9 - Validity, it states:


" The reference block is only valid for the scale for which it was calibrated.
The calibration validity should be limited to a duration of 5 years.  Attention is drawn to the fact that, for Al- and Cu-alloys, the calibration validity could be reduced to 2-3 years".


The question here is are all the test blocks valid that are currently been used for hardness testing within your metallurgy department.  This should become apparent if there is a quality system in place like the Metallurgical Laboratory Services UKAS – United Kingdom Accreditation Standard BS/EN/ISO/IEC 17025.


If there is a requirement for test block recalibration or a need for test blocks, please do get in contact with the Spectrographic Team.












Email: sales@spectrographic.co.uk

Tel: 01274 966173

Website: www.spectrographic.co.uk

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