HARDNESS REFERENCE BLOCKS ALL SCALES™
With official calibration certificates UKAS, DKD or ASTM
| CV Instruments hardness reference
blocks are used for annual verification and calibration of hardness testing
machines, as well as for periodical check and sometimes for overtaking
of hardness scales on a hardness testing machine. That’s why hardness
reference blocks are a necessary help of industrial Quality Management.
Only the use of high quality, precise hardness reference blocks calibrated
to applicable standards can ensure the functionality and relative reliability
and accuracy of measurement of a hardness testing machine. The hardness reference blocks used for indirect verification should conform largely to the workpiece to be tested, in terms of material characteristics and hardness range. For this reason a hardness reference block made of aluminium was developed for the lower hardness range which can not be covered by steel, using new materials technology methods. When using hardness reference blocks it is irrelevant wether the value of the nominal hardness to be delivered corresponds exactly to the actual calibration value observed, since scale adaptation should be carried out with at least two hardness values. A hardness reference block shall only be used as according to the standards to that method and test condition for which it was calibrated. CV Instruments certified hardness reference blocks are available as folllows and all conform to the international standards as mentioned above. |
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