46 CFR § 151.58-1
Required materials
April 15, 2021
When one of the following paragraphs of this section is referenced in table 151.05, only those materials listed in that paragraph may be used in components that contact the cargo or its vapor:
(a) Aluminum, stainless steel, or steel covered with a protective lining or coating. (See §151.15-3(f)(2).)
(b)-(c) [Reserved]
(d) Solid austenitic stainless steel.
(e) Stainless steel or steel covered with a suitable protective lining or coating. (See §151.15-3(f)(2).)
[CGD 88-100, 54 FR 40041, Sept. 29, 1989]