Tolerancing Form Deviations for NIST Standard Reference Material (SRM) 2809 Rockwell Diamond Indenters

Published: January 01, 2007

Author(s)

Jun-Feng Song, Samuel R. Low III, Li Ma

Abstract

The National Institute of Standards and technology (NIST) plans to develop Standard Reference Material (SRM) 2809 Rockwell Diamond Indenter to support Rockwell hardness standardization.  Most tolerances of the SRM indenters are adopted from those of the calibration grade Rockwell indenters specified in ASTE and ISO standards except the form deviations from tip radius.  Based on the historical data of hardness tests and geometrical measurements at NIST, and the results of FEA (Finite Element Analyses) simulations, a tight tolerance,   0.5  m, is specified for the form deviations of the SEM indenters.
Proceedings Title: Recent Advancement of Theory and Practice in Hardness Measurement | 2007 | | HARDMEKO 2007
Conference Dates: November 19-21, 2007
Conference Location: Tsukuba, JA
Conference Title: Recent Advancement of Theory and Practice in Hardness Measurement
Pub Type: Conferences

Keywords

diamond indenter, form deviation, Rockwell hardness
Created January 01, 2007, Updated February 19, 2017