46 CFR § 154.605
Toughness test
April 15, 2021
(a) Each toughness test under §§154.610 through 154.625 must meet Subpart 54.05 of this chapter.
(b) If subsize test specimens are used for the Charpy V-notch toughness test, the Charpy V-notch energy must meet Table 54.05-20 (a) of this chapter.