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Measurement Traceability to NIST Standard Rockwell Diamond Indenters

Published

Author(s)

Jun-Feng Song

Abstract

A metrology-based Rockwell hardness scale is established by a standard machine and a standard diamond indenter. Both must be established through force and dimensional metrology with acceptably small measurement uncertainties. In 1994, NIST developed a microform calibration system for the calibration of standard Rockwell diamond indenters. This was based on a stylus instrument using calibration and check standards, and NIST-developed calibration and uncertainty procedures. These calibrations show high accuracy and long-term reproducibility. One of these indenters was selected as the primary standard indenter for the establishment of the U.S. Rockwell hardness scales with metrological traceability, stability, and reproducibility.
Proceedings Title
Proceedings of 15th World Congress of International Measurement Confederation (IMEKO-XV)
Conference Dates
June 13-18, 1999
Conference Location
Osaka, JA

Keywords

diamond indenter, Rockwell hardness, traceability

Citation

Song, J. (1999), Measurement Traceability to NIST Standard Rockwell Diamond Indenters, Proceedings of 15th World Congress of International Measurement Confederation (IMEKO-XV), Osaka, JA (Accessed June 20, 2024)

Issues

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Created June 1, 1999, Updated February 19, 2017