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.

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

Development and Validation of Small Punch Testing at NIST

Published

Author(s)

Enrico Lucon, Jake T. Benzing, Nikolas W. Hrabe

Abstract

Small Punch (SP) testing is a methodology that uses tiny disks (generally 8 mm in diameter and 0.5 mm thick) to estimate mechanical properties of metallic materials, such as tensile properties, fracture toughness, and ductile-to-brittle transition temperature. Empirical correlations are typically used to infer conventional mechanical properties from characteristic forces and displacements obtained from the SP test record. At NIST in Boulder, Colorado, we recently developed experimental and analytical procedures for running SP tests on various materials. We conducted SP tests on three steels with widely different tensile and fracture properties. The NIST setup was successfully qualified by comparing our results on A533B steel to the results obtained in an international round-robin, and also by comparing empirical correlations between SP data and tensile properties to similar relationships published in the literature. We also tested specimens with different surface roughness, to investigate the influence of surface finish on SP test results.
Citation
NIST Interagency/Internal Report (NISTIR) - 8303
Report Number
8303
NIST Pub Series
NIST Interagency/Internal Report (NISTIR)
Pub Type
NIST Pubs

Download Paper

DOI Link

Keywords

Empirical correlations, international round-robin, Small Punch, surface roughness, tensile properties
Metals and Mechanical properties

Citation

Lucon, E. , Benzing, J. and Hrabe, N. (2020), Development and Validation of Small Punch Testing at NIST, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.IR.8303 (Accessed November 3, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created April 16, 2020
Was this page helpful?