From automotive manufacturing to health care technology, Canada’s biggest steel companies play a central role in powering the nation’s economy. According to the International Trade Administration, Canada exported a total of 6.4 million metric tons of steel in 2024 of which 91% went to the United States. This amount is set to change as the steel sector is in a period of major transition with the United States applying a 25% tariff on all imported steel and aluminum. While many of the steel companies in Canada are likely to be affected by the recent changes in policy, it’s unlikely they will go out of business. If your business is in need of quality steel, here are a few of the largest steel producers in Canada still operating. 

9. AltaSteel

• Market cap/revenue: 1.87 billion USD in 2024
• Employees: Approximately 400
• CEO: David Shastri
• Founded: 1955

Located in Edmonton, Alberta, AltaSteel has been producing carbon steel for nearly 70 years, supplying a wide range of sectors including mining, construction, and automotive. The company operates one of Canada’s early electric arc furnaces, allowing it to produce steel products using recycled scrap metal with a lower carbon footprint. As demand for sustainable steel solutions grows across North America, AltaSteel continues to push for more environmentally responsible practices, making it a standout in the Canadian steel industry.

8. Ivaco Rolling Mills

• Market cap/revenue: 149 million USD reported in 2024
• Employees: Approximately 500
• CEO: Varies by division
• Founded: 1970s

Ivaco Rolling Mills is a trusted North American supplier of steel products, specializing in hot-rolled wire rod and steel billets. Headquartered in L’Orignal, Ontario, the company serves customers across Canada and the United States, with exports supporting both construction and manufacturing sectors. As part of its commitment to modernizing operations, Ivaco continues to invest in sustainable steel manufacturing practices, including energy efficiency upgrades and enhanced recycling of scrap metal. Its ongoing focus on quality and innovation keeps it competitive in a rapidly evolving steel sector.

7. Gerdau Long Steel North America (Canada operations)

• Market cap/revenue: Parent company Gerdau S.A. reported revenue of approximately 11.8 billion USD in 2024
• Employees: Around 700 in Canada
• CEO: Gustavo Werneck (Global); Regional leadership varies in Canada
• Founded: Canadian operations since 1999

Gerdau’s Canadian division operates mini-mills in Ontario and Manitoba, producing carbon steel products primarily from scrap metal using electric arc furnaces. This approach supports a circular economy model that reduces waste and emissions across the steel manufacturing process. Serving key sectors like construction and heavy manufacturing, Gerdau supplies a wide range of metal products used in infrastructure projects throughout Canada and the United States. As one of the more forward-thinking steel companies in Canada, Gerdau is also exploring ways to integrate more renewable energy sources into its operations.

6. Nova Steel

• Market cap/revenue: 672.4 million USD in 2024
• Employees: Over 1,000
• CEO: Scott Jones
• Founded: 1979

Nova Steel is a North American steel manufacturer with a strong presence in both Canada and the United States. Headquartered in Montreal, the company produces flat-rolled steel, tubing, and sheet metal products for industries including construction, automotive, and energy. Known for its customer-driven approach and quick adaptation to market needs, Nova Steel has expanded steadily into new sectors while maintaining a focus on high-quality steel. Its continued investment in modern steel mills and innovative production techniques helps it stay competitive in a challenging and fast-changing steel sector.

5. Samuel, Son & Co.

• Market cap/revenue: 4 billion+ USD in 2024
• Employees: Around 5,000 globally
• CEO: Colin Osborne
• Founded: 1855

As one of the oldest steel companies in Canada, Samuel, Son & Co. has built a reputation for reliability and innovation across generations. With facilities throughout North America, the company provides steel products, metal processing, and value-added services to key industries like construction, aerospace, and energy. Its wide reach and diverse offerings make it a significant player in both the Canadian steel industry and the broader iron and steel industry across the continent. From sheet metal to complex plate products, Samuel remains focused on customer needs and delivering quality people building quality products.

4. Stelco Holdings Inc.

• Market cap/revenue: Approximately 2.17 billion USD (market cap, 2023)
• Employees: Around 2,200
• CEO: Alan Kestenbaum
• Founded: 1910 (restructured in 2017)

Based in Hamilton, Ontario, Stelco Holdings Inc. is one of the most recognizable names in the Canadian steel industry. Known for its production of flat-rolled steel, Stelco supplies a broad range of sectors including construction, automotive, and healthcare. The company has deep roots, built on the strength and resilience of generations of Stelco employees, and is embracing a new era of steel manufacturing with a strong focus on decarbonization and advanced technology. Their continued reinvestment reflects their goal to remain Canada’s steel company in a time of evolving demand and environmental responsibility.

3. Russel Metals Inc.

• Market cap/revenue: Approximately 4.3 billion USD (market cap, 2023)
• Employees: Over 3,000
• CEO: John G. Reid
• Founded: 1929

Russel Metals Inc. is one of the largest steel companies in Canada, specializing in the distribution and processing of metal products across North America. With a network of facilities in Western Canada, Ontario, and beyond, the company supplies a wide range of sectors, including energy, construction, and transportation. Russel Metals offers everything from sheet metal and carbon steel to specialty stainless steel, helping to meet growing demand for flexible, high-performance materials. 

2. EVRAZ North America (Canada division)

• Market cap/revenue: 3 billion USD in 2024
• Employees: Approximately 1,800 in Canada
• CEO: James Skippon (Canada)
• Founded: Canadian operations began in the 1950s

EVRAZ North America’s Canada division operates large-scale steel plants in Regina and Calgary, producing plate products, coil, and tubular steel products used primarily in the oil and gas sector. As part of a global steel group, EVRAZ Canada plays a key role in supplying pipeline-grade steel across North America. With a strong focus on vertically integrated operations, the company processes everything from iron ore to finished products, giving it a competitive edge in cost control and supply chain resilience. Its Canadian facilities are known for producing high-quality steel with a growing emphasis on reducing greenhouse gas emissions.

1. ArcelorMittal Dofasco

• Market cap/revenue: Part of ArcelorMittal (global revenue approximately 62.4 billion USD in 2024)
• Employees: Around 5,000
• CEO: Ron Bedard (President and CEO of Dofasco)
• Founded: 1912 (acquired by ArcelorMittal in 2006)

Headquartered in Hamilton, Ontario, ArcelorMittal Dofasco is the largest producer of flat-rolled steel in Canada. With a legacy over a century long, the company plays a central role in supplying steel to the automotive, construction, energy, and packaging industries. Dofasco is at the forefront of Canada’s transition to cleaner production methods, investing in hydrogen-based steel manufacturing, Direct Reduced Iron, and alternatives to the traditional blast furnace model. Backed by global resources and local expertise, Dofasco continues to define what it means to be Canada’s steel company in a time of growing environmental awareness and shifting market demand.

Bottom line

The Canadian steel industry has long been the backbone of national infrastructure, producing steel products that support construction, automotive, energy, and manufacturing. Today, the landscape is shifting as Canadian steel production faces mounting pressure from global competition, supply chain disruptions, and rising costs. At the same time, steel manufacturers are responding to calls for climate action by adopting cleaner technologies like electric arc furnaces and exploring lower-emission alternatives such as Direct Reduced Iron and natural gas. With support from the Government of Canada and the Canadian Steel Producers Association, the industry is investing in innovation to stay competitive in North America and beyond.

From long-standing industry giants to forward-thinking innovators, these steel companies of Canada are driving progress in a time of change. 

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