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

Revision: <strong>Final</strong> <strong>Report</strong>
Date: May 25, 2012
Data report forms
<strong>Report</strong> Form 1 (For Rockwell hardness scale B)
Metrology information
Model of hardness primary machine 8150TK (Note 1)
Serial number of hardness primary machine 093925 (Note 1)
Manufacturer of hardness primary machine Indentec (Note 1)
Hardness indication system Length transducer
Test force system Deadweight
Relative error of preliminary test force 0.0 %
Relative uncertainty (2s) of preliminary test force 1.0 %
Relative error of total test force 0.0 %
Relative uncertainty (2s) of total test force 0.1 %
Uncertainty of depth measuring device 3 um
The calibration and measurement capability (CMC) 1.5 HRBS (Note 2)
Note 1: The machine is not a primary hardness machine, but a commercial hardness machine.
Note 2: This CMC has not been submitted to <strong>APMP</strong> TCM for approval yet.
Velocity of the indenter when reaching the surface NA*
Holding time of preliminary test force 6.4 s
Test force loading speed 88 um/s
Total test force duration time 4.7 s
Time before reading permanent indentation depth NA*
Measurement place SCL Hong Kong
Measurement date 3 August 2010
Deformation of frame (um)
Testing condition
* SCL hardness machine equips with a non-motorised leadscrew loading system with upward motion driven manually.
Environment
Environment of comparison measurement
(20 ± 1) o C
(50 ± 8) %RH
(991 ± 3) hPa
Deformation of frame verification
1 2 3
0.7 0.9 0.8
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