APMP.M.H-S3 Final Report Comparison on Hardness ... - BIPM
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APMP.M.H-S3 Final Report Comparison on Hardness ... - BIPM

APMP.M.H-S3 Final Report Comparison on Hardness ... - BIPM APMP.M.H-S3 Final Report Comparison on Hardness ... - BIPM

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Revision: ong>Finalong> ong>Reportong> Date: May 25, 2012 Measurement report of KRISS Laboratory Page 50 of 77

Revision: ong>Finalong> ong>Reportong> Date: May 25, 2012 Annex A Data report forms Page1/5 ong>Reportong> Form 1 (For Rockwell hardness scale A) Metrology information Model of hardness primary machine SHT-31 Serial number of hardness primary machine 310037 Manufacturer of hardness primary machine Akashi Hardness indication system Laser Hologauge Test force system Lever Relative error of preliminary test force -0.104% Relative uncertainty (2) of preliminary test force 0.099% Relative error of total test force -0.017% Relative uncertainty (2) of total test force 0.026% Uncertainty of depth measuring device 0.12 ㎛ Serial number of the indenter 54160 The tip radius of curvature of the indenter 202.3 ㎛ The apex angle of cone of the indenter 119.99° The calibration and measurement capability (CMC) 0.4 HRA Testing condition Velocity of the indenter when reaching the surface 25㎛/s ~ 37㎛/s Holding time of preliminary test force 3.0 sec Test force loading speed 5.0 sec Total test force duration time 4.0 sec Time before reading permanent indentation depth 1.0 sec Environment of comparison measurement Measurement place KRISS Measurement date Sep. 30, 2010 Environment 23 °C, 43% R.H. Deformation of frame verification Deformation of frame (m) 1 2 3 -0.2 -0.2 -0.2 Page 51 of 77

Revisi<strong>on</strong>: <str<strong>on</strong>g>Final</str<strong>on</strong>g> <str<strong>on</strong>g>Report</str<strong>on</strong>g><br />

Date: May 25, 2012<br />

Measurement report of KRISS Laboratory<br />

Page 50 of 77

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