46 C.F.R. § 154.1702
Materials of construction.
Cite as 46 C.F.R. § 154.1702 (2026)
When Table 4 references one of the following paragraphs in this section, the materials in the referenced paragraph must not be in components that contact the cargo liquid or vapor:
(a) Aluminum and aluminum bearing alloys.
(b) Copper and copper bearing alloys.
(c) Zinc or galvanized steel.
(d) Magnesium.
(e) Mercury.
(f) Acetylide forming materials, such as copper, silver, and mercury.