Measurement Traceability to NIST Standard Rockwell Diamond Indenters
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 of 15th World Congress of International Measurement Confederation (IMEKO-XV)
Measurement Traceability to NIST Standard Rockwell Diamond Indenters, Proceedings of 15th World Congress of International Measurement Confederation (IMEKO-XV), Osaka, JA
(Accessed September 29, 2023)