The submission period will close at 11:59 PM ET on 29 September 2025.

The US Department of Commerce has initiated the September 2025 submission period for requests to add further derivative steel and aluminium products to the existing section 232 tariffs under the Trade Expansion Act of 1962 on 15 September 2025.

Only submissions for inclusion requests are being accepted and must be emailed to the Defence Industrial Base Programs inbox at DIBPrograms@bis.doc.gov.

The steel and aluminium content of these products will be subject to a duty rate of 50%.

Following the close of the submission window, accepted inclusion requests will be posted for a two-week public comment period on Docket ID BIS-2025-0023 on Regulations.gov.

The submission period will close at 11:59 PM ET on 29 September 2025.

Section 232 refers to a provision of the US Trade Expansion Act of 1962 that empowers the president to impose tariffs or other import restrictions if the US Secretary of Commerce finds that specific imports threaten to impair national security.

On 10 February 2025, the President issued Proclamations 10895, “Adjusting Imports of Aluminium into the United States” (Aluminium Proclamation), and 10896, “Adjusting Imports of Steel into the United States” (Steel Proclamation).

These proclamations imposed specified rates of duty on imports of aluminium and steel articles and certain derivative steel and aluminium articles, respectively (collectively, the Inclusions Proclamations).

The Inclusions Proclamations also required the Secretary of Commerce to establish a process for including additional derivative aluminium and steel articles within the scope of the duties.

In an interim final rule (IFR) published on 2 May 2025 (90 FR 18780), BIS amended supplement no. 1 to Part 705 of Title 15 of the Code of Federal Regulations and established a process for including additional derivative aluminum and steel articles within the scope of the duties authorised by the President under section 232 of the Trade Expansion Act of 1962, as amended (Section 232).

This IFR established recurring two-week windows each year for submissions for derivative products in May, September, and January.

Earlier, the US Department of Commerce’s Bureau of Industry and Security expanded the steel and aluminium tariffs to include 407 additional product categories covered by Section 232 sectoral tariffs on 19 August 2025.