---
kind: "section"
citation: "46 C.F.R. § 164.009-3"
title: "46"
number: "164.009-3"
heading: "Noncombustible materials not requiring specific approval."
url: "https://uscodex.org/cfr/46/164.009-3"
---

# §164.009-3. Noncombustible materials not requiring specific approval.


The following noncombustible materials may be used in merchant vessel construction though not specifically approved under this subpart:

- (a) **Sheet glass, block glass, clay, ceramics, and uncoated fibers.**
- (b) **All metals, except magnesium and magnesium alloys.**
- (c) Portland cement, gypsum, and magnesite concretes having aggregates of only sand, gravel, expanded vermiculite, expanded or vesicular slags, diatomaceous silica, perlite, or pumice.
- (d) Woven, knitted or needle punched glass fabric containing no additives other than lubricants not exceeding 2.5 percent.

## Notes

### Amendments

[CGD 86-035, 54 FR 36316, Sept. 1, 1989]

### Source

Source: CGD 74-129, 41 FR 41701, Sept. 23, 1976, unless otherwise noted.

### Authority

Authority: 46 U.S.C. 3306, 3703, 4302; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation 00170.1, Revision No. 01.4.

### Amendments

[CGD 86-035, 54 FR 36316, Sept. 1, 1989]