Calibration Reproductibility Test for NIST's No. 3581 Standard Rockwell Diamond Indenter

Published

January 1, 2006

Author(s)

Jun-Feng Song, Samuel R. Low III, A Zheng

Abstract

Standard Rockwell diamond indenter plays an important role for a worldwide unified Rockwell hardness scale.  In 1994, NIST established a microform calibration system with sufficiently small calibration uncertainty for the calibration of standard Rockwell indenters.  In 1995, NIST established a group of Rockwell diamond indenters characterized both by high geometrical uniformity and hardness performance uniformity.  One of them, No. 3581, was selected as the NIST s primary Rockwell diamond indenter for the calibration of NIST s Standard Reference Material (SRM) Rockwell C hardness blocks.  This indenter was re-calibrated in 1997 and 2005.  The calibration results showed high stability for the microform geometry of the NIST s standard Rockwell diamond indenter, as well as the high calibration reproducibility for the NIST s microform calibration system.

Proceedings Title

Proceedings of XVIII IMEKO World Congress

Conference Dates

September 17-22, 2006

Conference Location

Rio de Janeiro, BR

Conference Title

IMEKO World Congress

Pub Type

Conferences

Keywords

diamond indenter, HRC, microform calibration, reproducibility, Rockwell hardness, traceability

Citation

Song, J. , Low, S. and Zheng, A. (2006), Calibration Reproductibility Test for NIST's No. 3581 Standard Rockwell Diamond Indenter, Proceedings of XVIII IMEKO World Congress, Rio de Janeiro, BR (Accessed October 10, 2025)