---
kind: "section"
citation: "46 C.F.R. § 154.620"
title: "46"
number: "154.620"
heading: "Design temperature below −55 °C (−67 °F) and down to −165 °C (−265 °F)."
url: "https://uscodex.org/cfr/46/154.620"
---

# §154.620. Design temperature below −55 °C (−67 °F) and down to −165 °C (−265 °F).


Plates, forgings and forged or rolled fittings, and rolled, forged or extruded bars and shapes for cargo tanks, secondary barriers, and process pressure vessels for a design temperature below −55 °C (−67 °F) and down to −165 °C (−265 °F) must:

- (a) Meet [§ 54.25-10(b)(2)](/cfr/46/54.25-10.md?p=b-2), [§ 54.25-15](/cfr/46/54.25-15.md), or [§ 54.25-20](/cfr/46/54.25-20.md) of this chapter; or
- (b) **Be of an aluminum alloy that is specially approved by the Commandant (CG-ENG).**

## Notes

### Amendments

[CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

### Authority

Authority: 46 U.S.C. 3703, 9101; Department of Homeland Security Delegation No. 0170.1.

### Source

Source: CGD 74-289, 44 FR 26009, May 3, 1979, unless otherwise noted.

### Amendments

[CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]