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

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Revision: final <strong>Report</strong> Date: May 25, 2012 Measurement report of NIMT Laboratory Page 36 of 77
Revision: <strong>Final</strong> <strong>Report</strong> Date: May 25, 2012 Annex A Data report forms <strong>Report</strong> Form 1 (For Rockwell hardness scale A) Metrology information Model of hardness primary machine SHT-31 Serial number of hardness primary machine 310039 Manufacturer of hardness primary machine Akashi – Japan Hardness indication system Laser hologauge Test force system Lever type Relative error of preliminary test force +0.01 % (+0.001 kgf) Relative uncertainty (2) of preliminary test force 0,030 % Relative error of total test force +0.001 % (+0.0033 kgf) Relative uncertainty (2) of total test force 0.01% Uncertainty of depth measuring device 0.2 m Serial number of the indenter 53495 The tip radius of curvature of the indenter 200m ± 4m The apex angle of cone of the indenter 120 ± 0.1 The calibration and measurement capability (CMC) 0.38 HRA Testing condition Velocity of the indenter when reaching the surface 80-200 m/s Holding time of preliminary test force 3 s Test force loading speed 33 s Total test force duration time 4 s Time before reading permanent indentation depth 4 s Environment of comparison measurement Measurement place Hardness lab. NIMT Measurement date 28-29 April 2010 Environment (23±1)C ,(50±10)%RH Deformation of frame verification Deformation of frame (m) 1 2 3 0.14 0.14 0.15 Page 37 of 77
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APMP.M.H-S3 Final Report Comparison on Hardness ... - BIPM

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