49 CFR 179.100-10

§ 179.100-10 Postweld heat treatment.

United States · 49 CFR — Transportation · Status: effective

Cite this

Citation: 49 CFR 179.100-10, § 179.100-10 Postweld heat treatment, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/256708
Permanent ID: ys:prov:256708@1
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Full text

(a) After welding is complete, steel tanks and all attachments welded thereto must be postweld heat treated as a unit in compliance with the requirements of AAR Specifications for Tank Cars, appendix W (IBR, see § 171.7 of this subchapter). (b) For aluminum tanks, postweld heat treatment is prohibited. (c) Tank and welded attachments, fabricated from ASTM A 240/A 240M (IBR, see § 171.7 of this subchapter), Type 304L or Type 316L materials do not require postweld heat treatment, but these materials do require a corrosion resistance test as specified in § 179.100-7(c)(2).

Legislative history

This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.