NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
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.
DEVELOPING DEFINITIONS OF CONVENTIONAL HARDNESS TESTS FOR USE BY NATIONAL METROLOGY INSTITUTES
Published
Author(s)
Samuel Low, Jun-Feng Song, Alessandro Germak, Andy Knott, Renato Reis Machado
Abstract
This paper describes the process used by the Consultative Committee for Mass and Related Quantities - Working Group on Hardness (CCM-WGH) of the International Committee of Weights and Measures (CIPM) to develop international definitions of the conventional Rockwell, Brinell, Vickers and Knoop hardness test methods, for use by the National Metrology Institutes (NMI) that standardize hardness measurement.
Low, S.
, Song, J.
, Germak, A.
, Knott, A.
and Reis Machado, R.
(2021),
DEVELOPING DEFINITIONS OF CONVENTIONAL HARDNESS TESTS FOR USE BY NATIONAL METROLOGY INSTITUTES, Measurement: Sensors, [online], https://doi.org/10.1016/j.measen.2021.100096, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=932267
(Accessed October 14, 2025)