Algoma Steel Filed Suit to Void US Steel Supply Contract
The supplier seeks to exit a 2020 agreement, citing market impacts from US trade tariffs on its products.
Updated on Sept. 30, 2026 in International Trade
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Algoma Steel filed a lawsuit in the Ontario Superior Court on September 29, 2025, seeking to void its iron ore pellet contract with US Steel. The move challenges the agreement signed in May 2020 as Algoma faces significant trade-related market hurdles.
Why it matters
The dispute highlights the operational risks businesses face when international trade tariffs disrupt long-term supply agreements. Companies operating across borders must now navigate conflicting legal jurisdictions while managing the impact of protectionist trade policies on fixed-price contracts.
US Steel is seeking to recover more than $22 million in damages following the contract cancellation, a figure measured against the terms of the 2020 agreement. It remains unknown how the courts will resolve the overlapping claims in Ontario and Pennsylvania.
The players
Algoma Steel
A major Canadian steel producer that manages large-scale manufacturing operations and complex international supply chains.
US Steel
A prominent American steel manufacturer and integrated supplier with significant operations and legal presence in Pennsylvania.
The details
Algoma Steel contends that US tariffs on its products have significantly hampered its ability to maintain the iron ore pellet contract. Conversely, US Steel has filed a separate lawsuit in Pittsburgh, arguing that the contract is governed by Pennsylvania law and falls outside the jurisdiction of Ontario courts.
Timeline
May 2020: Algoma Steel and US Steel signed the original supply contract.
September 29, 2025: Algoma notified US Steel of the contract cancellation.
October 26, 2026: The court is expected to rule on the motion to pause the Canadian proceeding.
Market Landscape
This litigation follows the pattern of supply chain disruptions triggered by the 2018 Section 232 steel and aluminum tariffs. The conflict highlights how international trade friction forces companies to challenge long-term supply contracts when original market conditions shift.
Operators should review their own long-term supply contracts for clauses governing jurisdiction and force majeure events in the context of trade volatility. Relying on fixed-price or volume agreements without adequate protection against regulatory changes can create substantial litigation risk.
The takeaway
Supply chain resilience depends on anticipating how trade policy shifts can render long-term contracts economically unviable for one party. Operators should monitor the October 26 ruling to understand how courts prioritize local jurisdiction over international supply agreements.
What happens next
A court ruling is scheduled for October 26, 2026, which will determine if the Ontario legal proceeding will be paused.
Further reading
For more on how global trade rules impact supply chains, see our analysis on International Trade.
Source note: This article includes information reported by Steelorbis.
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