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We report the results of the second Charpy Interlaboratory Comparison between NIST (National Institute of Standards and Technology, Boulder, Colorado, USA) and
The NIST Charpy Machine Verification Program has recently decided to change the test temperature for low-energy and high-energy certified reference specimens
The Charpy reference specimens produced by NIST for the indirect verification of Charpy machines in accordance with ASTM E23 and ISO 148-1 must satisfy strict