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.
Dynamic Force
SRMs 2112 and 2113
These SRMs are for use to verify the maximum forces measured by Charpy impact machines. The certified values of these SRMs were determined by round robin results, which were in good agreement.
It is not clear if differences observed between strikers with 2 mm and 8 mm radii are of practical significance.
The certified value determined for the maximum force of the low energy specimens is 32.97 ±0.75 kN (±3 %), with an expanded uncertainty of 1.84 kN (5.6 %). The specimens have a 95 % uncertainty interval of ±6 %.
The certified value determined for the maximum force of the high energy (HH-103) specimens is 24.06 ±0.28 kN (±1.2 %), with an expanded uncertainty of 0.70 kN (2.9 %). The specimens have a 95 % uncertainty interval of ±3 %.
Created February 12, 2009, Updated August 25, 2016