46 C.F.R. § 54.25-1 Scope.
Title 46 - Shipping
(a) The carbon, alloy, and heat treated steels used in construction of pressure vessels and parts shall be as indicated in section VIII of the ASME Code except as noted otherwise in this subpart.
Title 46: Shipping
PART 54—PRESSURE VESSELS
Subpart 54.25—Construction With Carbon, Alloy, and Heat Treated Steels
§ 54.25-1 Scope.