U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

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
Pub Type
Conferences

Keywords

diamond indenter, Rockwell hardness, traceability
Manufacturing and Metrology

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 October 6, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created June 1, 1999, Updated February 19, 2017