---
kind: "section"
citation: "46 C.F.R. § 154.630"
title: "46"
number: "154.630"
heading: "Cargo tank material."
url: "https://uscodex.org/cfr/46/154.630"
---

# §154.630. Cargo tank material.

- (a) If a material of a cargo tank is not listed in §§ [154.610](/cfr/46/154.610.md), [154.615](/cfr/46/154.615.md) or [§ 154.620](/cfr/46/154.620.md), the allowable stress of that material must be specially approved by the Commandant (CG-ENG).
- (b) For cargo tanks of aluminum alloys with welded connections, the minimum tensile strength (σB) for the calculations under [§ 154.440](/cfr/46/154.440.md), [§ 154.447](/cfr/46/154.447.md) and [§ 154.450](/cfr/46/154.450.md) must be the minimum tensile strength of the alloy in the annealed condition.
- (c) Increased yield strength and tensile strength of a material at low temperature for independent tanks type A, B, and C must be 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]