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

Revision: <strong>Final</strong> <strong>Report</strong>
Date: May 25, 2012
Data report forms Page 2/6
<strong>Report</strong> Form 1 (For Rockwell hardness scale B)
Metrology information
Model of hardness primary machine
Serial number of hardness primary machine RNG10
Manufacturer of hardness primary machine WAZAU
Hardness indication system Laserinterferometer
Test force system
Relative error of preliminary test force
Deth weight
Relative uncertainty (2) of preliminary test force
Relative error of total test force
5*10^-4
Relative uncertainty (2) of total test force 5*10^-4
Uncertainty of depth measuring device 0.1 µm
The calibration and measurement capability
(CMC)
0.5 HRB
Testing condition
Velocity of the indenter when reaching the surface 0.86 mm/s
Holding time of preliminary test force 2.5 s
Test force loading speed (final speed) 103 N/s
Total test force duration time 5.5 s
Time before reading permanent indentation depth 4.8 s
Environment of comparison measurement
Measurement place PTB
Measurement date 1st June 2010
Environment (20 ± 1) °C
Deformation of frame verification
Deformation of frame (m)
1 2 3
0.324 0.311 0.297
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