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

Revision: <strong>Final</strong> <strong>Report</strong>
Date: May 25, 2012
<strong>Report</strong> Form2 - Result of the Rockwell hardness scale A measurements (35 - 85 HRA)
Laboratory: Measured Checked
National Physical Laboratory by: Dr.S.S.K.Titus by: Dr.S.K.Jain
Measured
date: 25-10-2010
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Hardness Block Number A32517 A33781 25568
Measured value
B12037 B15871 A27761 A21048
Nominal Value (HRA) 35 40 55 60 70 80 85
Section 1 35.48 38.49 55.46 60.74 70.66 81.54 85.91
Section 2 35.47 38.42 55.31 60.77 70.79 81.55 85.94
Section 3 35.31 39.34 55.14 60.46 70.88 81.57 85.87
Section 4 35.16 39.26 55.29 60.45 70.88 81.55 85.68
Section 5 35.12 39.51 55.33 60.53 70.91 81.55 85.80
Section 6 35.28 39.36 55.19 60.56 70.90 81.56 85.78
Section 7 35.34 39.41 55.09 60.63 70.80 81.57 85.72
Section 8 35.20 39.46 54.98 60.55 70.85 81.49 85.67
Section 9 35.40 39.19 55.13 60.63 70.94 81.68 85.81
Average Value 35.31 39.16 55.21 60.59 70.85 81.56 85.80
Uniformity 0.36 1.09 0.48 0.32 0.28 0.19 0.27
Correction Value Nil Nil Nil Nil Nil Nil Nil
Corrected Value 35.31 39.16 55.21 60.59 70.85 81.56 85.80
Expanded uncertainty (k=2) 0.31 0.42 0.32 0.31 0.31 0.30 0.31
Remark: In case of the participant made an incorrect indentation or is unsure about the measurement value, please report to the pilot institute.
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