US : Adjusted Section 232 Tariff on Aluminium, Steel and Copper

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Ref. :EIC 111/3
 EIC 111/3/13

2 June 2026
(Last updated on 8 June 2026)

Dear Sirs,

Further to Commercial Information Circular (CIC) No. 312/2026 dated 8 April 2026 on the US’ tariffs on steel, aluminium and copper imports, the US President on 1 June 2026 signed a proclamation to adjust tariffs on certain imports of aluminium, steel, copper articles and their derivative articles effective from 8 June 2026 under section 232 of the Trade Expansion Act of 1962.

2.Pursuant to section 232 of the Trade Expansion Act of 1962, the US imposed additional tariffs of 25% and 10% on respectively steel and aluminium products imported from all countries/economies (except certain economies which are fully exempted or subject to quotas) on 23 March 2018 under the “section 232 investigation”. The US further included certain derivatives of steel and aluminium products for the additional tariffs on 8 February 2020. The US reinstated 25% tariff on steel imports and increased tariffs on aluminium imports to 25% from all countries/economies, with effect from 12 March 2025, and increased the rates to 50% effective from 4 June 2025. Besides, the US imposed a 50% section 232 tariff on copper imports effective from 1 August 2025. Subsequently, on 2 April 2026, the US President signed Proclamation 11021 to modify tariffs on certain imports of steel, aluminium, copper articles and their derivatives effective from 6 April 2026.

3.On 1 June 2026, the US President signed a proclamation to adjust tariffs on certain imports of aluminium, steel, copper articles and their derivative articles under section 232 of the Trade Expansion Act of 1962. Among others, effective with respect to goods entered for consumption, or withdrawn from warehouse for consumption from 8 June 2026,

1. subchapter III of chapter 99 of the Harmonized Tariff Schedule of the United States (HTSUS) is modified as provided in Annex IV to this proclamation and the lists of products provided in Annex I-A (products subject to 50% section 232 tariff on full value), Annex I-B (products subject to 25% section 232 tariff on full value), Annex II (products removed from scope of section 232 steel and aluminium derivatives), and Annex III (temporary reduction list for section 232 steel and aluminium derivatives) of Proclamation 11021 of 2 April 2026 are modified as set forth in the annexes to this proclamation; and
2. until 31 December 2027, the applicable additional ad valorem rate of duty imposed pursuant to section 232 for all aluminium and steel articles listed in Annex I-C (products subject to section 232 tariff on full value) to this proclamation shall be 25%, unless otherwise specified; and effective with respect to goods entered for consumption or withdrawn from warehouse for consumption from 1 January 2028, the applicable additional ad valorem rate of duty for imports of products listed in Annex I-C to this proclamation shall be the rates set out in clause (3) of Proclamation 11021 of 2 April 2026.

4.The US shall determine whether any modifications to the HTSUS are necessary to effectuate or implement this proclamation or any actions taken pursuant to this proclamation, and shall make such modifications through notice in the Federal Register (FR).  The US may also make any technical corrections to any annexes to this proclamation.

5.For further details, please refer to the presidential proclamation, the White House’s fact sheet, the FR notice and the US Customs and Border Protection (CBP)’s message:

Presidential proclamation
https://www.whitehouse.gov/presidential-actions/2026/06/further-adjusting-the-tariff-regimes-for-imports-of-aluminum-steel-and-copper-into-the-united-states/

White House’s fact sheet
https://www.whitehouse.gov/fact-sheets/2026/06/fact-sheet-president-donald-j-trump-updates-tariffs-on-steel-aluminum-and-copper-imports/

FR notice
https://www.govinfo.gov/content/pkg/FR-2026-06-04/pdf/2026-11314.pdf

US CBP’s Cargo Systems Messaging Service Message - Guidance - Further Adjusting the Tariff Regimes for Imports of Aluminum, Steel, and Copper Into the United States
https://content.govdelivery.com/bulletins/gd/USDHSCBP-41aa83d?wgt_ref=USDHSCBP_WIDGET_2

6.For enquiries concerning the content of this circular, please contact us at telephone number 2398 5405.

Yours faithfully,

(Miss Kwany KOU)
for Director-General of Trade and Industry

Note: While every effort is made to ensure the accuracy of the above information, the Department cannot guarantee this to be so and will not be held liable for any reliance placed on the same.