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

Revision: <strong>Final</strong> <strong>Report</strong>
Date: May 25, 2012
<strong>Report</strong> Form3 - Result of the Rockwell hardness scale B measurements (25-100 HRB )
Laboratory: KRISS Measured Checked Measured
by: N.H. Tak by: G.W. Bahng
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date: SEP 30, 2010
measured value
Hardness Block Number E1620 B30120 A31382 A32411 A33748 A34522 A35542 25566 30836
Nominal Value (HRBW) 25 30 40 50 60 70 80 90 100
Section 1 22.7 29.6 38.7 52.1 59.6 70.5 79.8 90.7 100.0
Section 2 22.8 29.4 38.7 50.9 59.8 70.0 79.2 90.3 100.2
Section 3 23.1 29.2 38.4 51.0 59.4 70.0 80.2 90.3 100.1
Section 4 23.8 29.5 38.6 50.9 59.7 70.0 79.8 90.3 100.1
Section 5 24.3 29.6 38.8 51.0 59.8 70.3 79.7 90.3 100.2
Section 6 23.9 29.6 38.4 51.0 59.9 70.9 80.5 90.4 100.1
Section 7 24.1 29.6 38.8 50.8 60.0 69.9 79.3 90.4 100.1
Section 8 23.7 29.4 38.4 50.7 60.2 70.0 80.5 90.3 100.1
Section 9 23.9 29.2 38.5 50.6 59.7 69.9 79.7 90.3 100.0
Average Value 23.59 29.46 38.59 51.00 59.79 70.17 79.86 90.37 100.10
Uniformity 1.6 0.4 0.4 1.5 0.8 1.0 1.3 0.4 0.2
R epeatability 0.21 0.06 0.06 0.16 0.08 0.12 0.17 0.05 0.03
Correction Value
Corrected Value 23.59 29 .46 38 .59 51.00 59 .79 70.17 79 .86 90.37 100.10
Expanded uncertainty (k=2) 0.75 0.75 0.75 0.75 0.60 0.60 0.60 0.60 0.60
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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