Canadian steelmakers are leaning harder on domestic customers after U.S. tariffs sharply reduced access to their largest export market.
Reuters reported on October 16 that domestic steel reached 51% of Canadian consumption in 2025, up from 41% in 2024, according to United Steelworkers calculations based on World Steel Data and Canadian import data. The import share fell to 49% from 59%.
Tariffs forced the export problem back into Canada
The pressure started with a major change in U.S. trade policy. A White House proclamation raised tariffs on imports of steel and steel-derivative articles from 25% to 50%, effective June 4, 2025, with separate treatment for the United Kingdom.
Canada’s exposure was unusually high. Finance Canada said Canadian steel producers exported just over 50% of annual production in 2024, and more than 90% of those exports went to the United States. Reuters reported, citing the Canadian Steel Producers Association, that shipments to the U.S. fell 60% in 2025.
That drop has pushed mills to chase more orders at home. The best-positioned products are those tied to projects already underway or being planned in Canada: plate for infrastructure and defence, pipe for energy, and fabricated steel for industrial projects.
Domestic demand is growing, but modestly
The OECD estimated in its 2026 Steel Outlook that Canadian steel demand grew around 2.7% in 2025 and projected a further 0.9% increase in 2026. That is useful growth for an industry under tariff pressure, but it is modest against the scale of lost U.S. access.
Reuters pointed to mining, energy and AI data centre projects as part of the demand base now supporting Canadian producers. It also cited a 1.2-gigawatt data centre project in Saskatchewan as one example of western Canadian project activity helping local steel demand.
Tenaris is one of the clearer examples of the domestic shift. The company announced a more than $300 million CAD investment at its Sault Ste. Marie Industrial Centre in 2026. Federal government materials put the project at $305.9 million and said Ottawa would provide $76.2 million through the Strategic Response Fund to expand and upgrade specialized steel production capacity for oil, gas and industrial markets.
Policy is carrying a large part of the shift
The home-market pivot is not purely market-led. Ottawa has used import controls, procurement rules and financing to create more space for Canadian steel.
Finance Canada said in June 2026 that tariff-rate quotas for steel imports would be extended for one year. Current quota levels continue to be based on 20% of 2024 volumes for partners without a free trade agreement with Canada and 75% for partners with one, while imports beyond quota limits face a 50% tariff. The United States and Mexico remain exempt from those Canadian TRQs under the announcement.
The federal government has also tied major public procurement more closely to Canadian materials. The Prime Minister’s Office said in November 2025 that Canada’s Buy Canadian Policy would require contracts worth more than $25 million to prioritize Canadian materials, including steel and lumber, across federal contracts, grants and contributions programs.
Finance Canada also outlined sector support in July 2025, including funding through the Strategic Innovation Fund, worker supports, and financing programs intended to help steel firms serve the Canadian market, produce products not currently made in Canada and supply strategic sectors such as defence.
The gains are uneven across producers
Algoma Steel’s latest results show how the domestic pivot can help while leaving the sector under pressure. In July, the company reported a second consecutive quarter of record plate sales and said its Canadian plate strategy was working. The same release showed shipments of 181,473 tons in the quarter, compared with 472,056 tons a year earlier, reflecting its electric-arc-furnace transition and the move toward the Canadian plate market.
Stelco shows the harder side of the adjustment. Global News reported on October 8 that the Cleveland-Cliffs-owned company had started issuing layoff notices at its Hamilton, Ontario, steel plant as it moved ahead with plans affecting as many as 500 workers across its Hamilton and Lake Erie facilities. The company cited the trade crisis, weak demand and import pressure.
Those two examples point to the same constraint: Canadian demand is not interchangeable across every steel product. A producer exposed to weaker flat-rolled or coated steel markets can still face layoffs, lower capacity use or idled operations.
Canadian buyers may see more local sourcing pressure
For Canadian manufacturers, builders, energy firms and data-centre developers, the steel shift may show up in procurement long before it appears in national economic data. More local mills are competing for Canadian business, according to Reuters, while federal procurement rules and import quotas may push large projects to document whether Canadian steel is available for the required grades, sizes and timelines.
That does not remove sourcing risk. Product specifications, regional freight costs, price differences and project timing still matter. The Bank of Canada warned in April that diversification away from the United States remained difficult for many tariff-affected businesses because of barriers such as high transportation costs to more distant markets. It also said steel exports had fallen by half and that contract expiries in 2026 created a risk of further export declines.
The next test is durability
The shift toward domestic customers will depend on whether Canadian project demand stays strong, whether public procurement translates into mill orders, and whether trade rules keep imported steel from undercutting local production without creating shortages for downstream buyers.
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