ArcelorMittal Dofasco steel plant

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ArcelorMittal Dofasco steel plant, also known as ArcelorMittal Flat Carbon Steel Canada, ArcelorMittal Hamilton, is a steel plant in Hamilton, Ontario, Canada that operates electric arc furnace (EAF), basic oxygen furnace (BOF), blast furnace (BF), and direct reduced iron (DRI) technology.

Location

The map below shows the exact location of the plant in Hamilton, Ontario, Canada:

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  • Location: Hamilton, 1330 Burlington St. E., Ontario, Canada, L8N 3J5
  • Coordinates (WGS 84): 43.269255, -79.804858 (exact)

Background

The ArcelorMittal Dofasco plant began operating in 1912. The plant was purchased by ArcelorMittal in 2006 (the largest steel company in the world), who outbid a German steelmaker rival, ThyssenKrupp.

Environmental Concerns

In 2014, the company paid around half a million CAD after pleading guilty to violating air quality standards in 2012.[1] In 2015, an instrument failure released a large amount of iron oxide dust into the atmosphere.[2] In 2018, another large black plume of dust was released from the plant. The company was fined more than $268,750 CAD in 2021 for this incident.[3] In November, 2025, local residents of Hamilton issued a request for investigation into the Dofasco plant over concerns that the plant was emitting harmful pollutants, including benzene and benzo[a]pyrene. The request alleges that Dofasco has operatued under an exemption that allowed for the emittance of contaminants at concentrations ranging from 3-900 times the science-based, health-protective standards, and that, after the exemption expired, the company continued to emit the contaminants at high levels.[4]

Transition

In July 2021, an 2400-thousand tonne expansion to the ArcelorMittal Dofasco plant was proposed, with an anticipated completion date of 2028. The expansion represents a 1.756 billion CAD investment (with 400 million CAD coming from federal government support).[5] The new extension is meant to be a transition away from BF-BOF furnace steelmaking to the greener DRI-EAF production; it should reduce emissions at the plant by 60%.[6] According to Newswire, this project, along with the Algoma Steel project announced on July 5, 2021, will reduce Canada's greenhouse gas emissions by up to 6 million tonnes per year.[5]

In 2022, the company announced that it had broken ground on the project, with plans to demolish the coke oven to make space for the announced DRI in 2023.[7]

In 2024, CBC news reported that the plant has missed key milestones in moving the expansion project forward to meet goals in reducing emissions. One goal included retiring and demolishing the coke plant, which as of November 2025 had not begun, bringing into question whether the plant would meet announced and touted emissions reduction goals by 2028.[8]

Ownership Tree

This ownership tree is part of the Global Energy Ownership Tracker, a project of Global Energy Monitor.

Low-emissions/green steelmaking

This steel plant is associated with a green steel project tracked in the Green Steel Tracker. Details about the project are included below.

Table 1: Green Steel Project Details

All references for the above data are available in the Green Steel Tracker.
Project 1
Project name ArcelorMittal Hamilton
Company ArcelorMittal
Company has climate goals? Yes
Location Hamilton, Canada
Project website Not available
Project scale Full scale
Project status Announced
Year to be online 2028
Technology to be used NG-DRI to H-DRI
Technology details Planned gradual phase out of NG-DRI to H-DRI & EAF
Iron production capacity (million tonnes per year) 2
Steel production capacity (million tonnes per year) 2
CO2 capture (million tonnes CO2 per year) Not applicable
Hydrogen generation capacity (MW) Not applicable
Investment size (m USD) 1417
Date of announcement 7/30/2021

Plant Details

Table 2: General Plant Details

Start date Workforce size
1912[9] 5000[10]

Table 3: Ownership and Parent Company Information

Parent company Parent company PermID Parent GEM entity ID Owner Owner company PermID Owner GEM entity ID
ArcelorMittal SA [100.0%] 5000030092 [100.0%] E100000000687 [100.0%] ArcelorMittal Dofasco GP [100%][11] 5057768900 E100001000495 [100%]

Table 4: Process and Products

Steel product category Steel products Steel sector end users ISO 14001 Responsible steel Main production equipment
finished rolled[12] tinplate, galvanized, cold rolled, hot rolled, tube[13] automotive, building and infrastructure, energy, steel packaging, tools and machinery, transport[14][15] 2022[16] 2027-01-10[17][18] BF; DRI; EAF; BOF

Table 5: Plant-level Crude Steel Production Capacities (thousand tonnes per annum)

1Please see our Frequently Asked Questions page for an explanation of the different capacity operating statuses.
Capacity operating status1 Basic oxygen furnace steelmaking capacity Electric arc furnace steelmaking capacity Nominal crude steel capacity (total)
announced – 2400[19][20][21] 2400[19][20][21]
operating – 1350[22] 1350[22]
operating pre-retirement 2700[23] – 2700[23]
retired 2700[24][23][25] – 2700[24][23][25]

Table 6: Plant-level Crude Iron Production Capacities (thousand tonnes per annum)

1Please see our Frequently Asked Questions page for an explanation of the different capacity operating statuses.
Capacity operating status1 Blast furnace capacity Sponge iron/DRI capacity Nominal iron capacity (total)
announced – 2500[26][27] 2500[26][27]
mothballed 927[28] – 927[28]
operating pre-retirement 2929[28] – 2929[28]

Table 7: Upstream Products Production Capacities (thousand tonnes per annum)

Ferronickel Coke Pellets
NF >0[29] >0[30]

Table 8: Actual Plant-level Crude Steel Production by Year (thousand tonnes per annum)

Year BOF production EAF production Other/unknown steel production Total (all routes)
2019 unknown[31] unknown[31] 3300[31] 3300[31]
2020 unknown[29] unknown[29] 2700[29] 2700[29]
2021 unknown[32] unknown[32] 2800[32] 2800[32]
2022 1876[32] 924[32] –[32] 2800[32]
2023 2067[19] 1033[19] –[19] 3100[19]
2024 2000[33][34] 1100[33][34] –[33][34] 3100[33][34]

Table 9: Actual Plant-level Crude Iron Production by Year (thousand tonnes per annum)

Year BF production Other/unknown iron production Total (all routes)
2019 2387[35] –[35] 2387[35]
2020 unknown unknown –
2021 unknown unknown –
2022 1900[36] –[36] 1900[36]
2023 2100[37] –[37] 2100[37]
2024 2100[38] –[38] 2100[38]

Unit Details

Table 10: Blast Furnace Details

Unit name Status Start date Retired date Furnace manufacturer and model Current size Current capacity (ttpa) Decarbonization technology Most recent relining
BF 2 operating pre-retirement[39] 1957[40] 2030[41][42] JNE Group[43][44] 1062.0 m3[36] 1186[28] Decarbonization plan underway: https://www.recyclingtoday.com/article/arcelormittal-adjusting-steel-production-coronavirus/[24] 2005-07[45]
BF 3 mothballed[32] 2010[46] 2028[42] – 925.0 m3[36] 927[28] Decarbonization plan underway: https://www.recyclingtoday.com/article/arcelormittal-adjusting-steel-production-coronavirus/[24] 2010[47]
BF 4 operating pre-retirement[39] 1971[48] 2030[41][42] Hoogoven[49] 1609.0 m3[36] 1743[28] Decarbonization plan underway: https://www.recyclingtoday.com/article/arcelormittal-adjusting-steel-production-coronavirus/[24] –

Table 11: Direct Reduced Iron Furnace Details

Unit name Status Start date Furnace manufacturer and model Furnace type Current capacity (ttpa)
unknown DRI (1) announced[20] 2028[50] Tenova and Danieli Energiron ZR direct reduction plant[51][51] shaft furnace[19] 2500[27][26]

Table 12: Direct Reduced Iron Furnace Reductant Details

Unit name Current or initial reductant Gas reductant Hydrogen reductant status
unknown DRI (1) gas[19] syngas (reformed methane)[19] capable[19]

Table 13: Electric Arc Furnace Details

Unit name Status Construction date Start date Current capacity (ttpa) Current size (tonnes)
unknown EAF (1) operating[22] 1996[52] – 1350[22] 167.0[53][54][12]
unknown EAF (2) announced[21][20] – 2028[41] 2400[19][21][20] –

Table 14: Electric Arc Furnace Feedstock Details

Unit name Scrap-based % scrap % DRI % HBI % sponge iron (unknown if DRI or HBI) % basic/merchant pig iron % granulated pig iron % pig iron (unknown if basic/merchant or granulated) % other iron
unknown EAF (1) yes[55] 100.00[22] – – – – – – –
unknown EAF (2) yes[56] 100.00[56] >0[56] unknown unknown unknown unknown unknown unknown

Table 15: Basic Oxygen Furnace Details

Unit name Status Announced date Start date Retired date Furnace manufacturer and model Current capacity (ttpa) Current size
unknown BOF (1) retired[57] – – 2022 – 2700[25][24][23] 190.0 m3[21][20]
unknown BOF (2) operating pre-retirement[58] 2020[58] 2022[58] 2030[41] SMS KOBM[58][58] 2700[23] 320.0 tonnes[58]

Articles and Resources

Additional data

To access additional data, including an interactive map of steel plants, a downloadable dataset, and summary data, please visit the Global Iron and Steel Tracker on the Global Energy Monitor website.

References

  1. ↑ CBC (2014-05-26). "ArcelorMittal Dofasco fined after guilty pleas to 6 pollution charges | CBC News". CBC News. Retrieved 2021-10-13.{{cite web}}: CS1 maint: url-status (link)
  2. ↑ "Instrument failure causes air pollution incident at ArcelorMittal". The Hamilton Spectator. 2015-05-27. ISSN 1189-9417. Retrieved 2021-10-13.
  3. ↑ Taekema, Dan (2021-05-27). "ArcelorMittal Dofasco fined more than $260K for cloud of pollution in 2018 | CBC News". CBC. Retrieved 2021-10-13.{{cite web}}: CS1 maint: url-status (link)
  4. ↑ "Hamilton residents file request to investigate ArcelorMittal Dofasco steel mill over dangerous air emissions". Ecojustice. November 3, 2025. Retrieved November 5, 2025.
  5. ↑ 5.0 5.1 Canada, Innovation, Science and Economic Development. "Government investing in Hamilton's steel industry to support good jobs and significantly reduce emissions". www.newswire.ca. Retrieved 2021-10-13.
  6. ↑ Coyne, Justine (2021-07-30). "ArcelorMittal plans EAF, DRI investments in Canada". www.spglobal.com. Retrieved 2021-10-13.
  7. ↑ "ArcelorMittal Dofasco hosts groundbreaking ceremony for its transformational low-carbon emissions steelmaking project". dofasco.arcelormittal.com. October 13, 2025. Retrieved November 5, 2025.{{cite web}}: CS1 maint: url-status (link)
  8. ↑ "ArcelorMittal Dofasco misses key milestones in $1.8B 'green' steel project promised for 2028". www.cbc.ca. Retrieved 2025-01-28.
  9. ↑ https://web.archive.org/web/20220117013717/https://dofasco.arcelormittal.com/. Archived from the original on 2022-01-17. {{cite web}}: Missing or empty |title= (help)
  10. ↑ https://web.archive.org/web/20220120130323/https://dofasco.arcelormittal.com/who-we-are/at-a-glance/about-dofasco.aspx?_ga=2.233140315.455241129.1625871093-1647804220.1625871093. Archived from the original on 2022-01-20. {{cite web}}: Missing or empty |title= (help)
  11. ↑ https://web.archive.org/web/20231029214454/https://northamerica.arcelormittal.com/our-operations/arcelormittal-dofasco. Archived from the original on 2023-10-29. {{cite web}}: Missing or empty |title= (help)
  12. ↑ 12.0 12.1 (PDF) https://web.archive.org/web/20220121144844/https://factbook2018.arcelormittal.com/~/media/Files/A/Arcelormittal-Factbook-2018/AM_FactBook_2018.pdf. Archived from the original (PDF) on 2022-01-21. {{cite web}}: Missing or empty |title= (help)
  13. ↑ https://web.archive.org/web/20220117014204/https://dofasco.arcelormittal.com/what-we-do/products.aspx. Archived from the original on 2022-01-17. {{cite web}}: Missing or empty |title= (help)
  14. ↑ https://web.archive.org/web/20220117014128/https://dofasco.arcelormittal.com/what-we-do/markets.aspx. Archived from the original on 2022-01-17. {{cite web}}: Missing or empty |title= (help)
  15. ↑ https://web.archive.org/web/20220630080319/https://dofasco.arcelormittal.com/who-we-are/at-a-glance/about-dofasco.aspx. Archived from the original on 2022-06-30. {{cite web}}: Missing or empty |title= (help)
  16. ↑ https://web.archive.org/web/20220117014051/https://dofasco.arcelormittal.com/who-we-are/accreditations.aspx. Archived from the original on 2022-01-17. {{cite web}}: Missing or empty |title= (help)
  17. ↑ (PDF) https://cdn.prod.website-files.com/653ed7060b01292cd4518d0e/6600092fe3b61b1d728facf2_ArcelorMittal_Dofasco_ResponsibleSteel-combined_1-2.pdf. {{cite web}}: Missing or empty |title= (help)
  18. ↑ "Issued Certificates and Ongoing Audits". www.responsiblesteel.org. Archived from the original on 2025-03-11. Retrieved 2024-11-13. {{cite web}}: Text "ResponsibleSteel" ignored (help)
  19. ↑ 19.00 19.01 19.02 19.03 19.04 19.05 19.06 19.07 19.08 19.09 19.10 (PDF) https://corporate.arcelormittal.com/media/zsmpkwx2/arcelormittal-factbook-2023-web_interactive_april-30th.pdf. {{cite web}}: Missing or empty |title= (help)
  20. ↑ 20.0 20.1 20.2 20.3 20.4 20.5 https://web.archive.org/web/20220126103700/https://corporate.arcelormittal.com/media/press-releases/arcelormittal-and-the-government-of-canada-announce-investment-of-cad-1-765-billion-in-decarbonization-technologies-in-canada. Archived from the original on 2022-01-26. {{cite web}}: Missing or empty |title= (help)
  21. ↑ 21.0 21.1 21.2 21.3 21.4 https://web.archive.org/web/20220124203738/https://www.spglobal.com/platts/en/market-insights/latest-news/electric-power/073021-arcelormittal-plans-eaf-dri-investments-in-canada. Archived from the original on 2022-01-24. {{cite web}}: Missing or empty |title= (help)
  22. ↑ 22.0 22.1 22.2 22.3 22.4 https://imis.aist.org/store/detail.aspx?id=PR-RU2023-2. {{cite web}}: Missing or empty |title= (help)
  23. ↑ 23.0 23.1 23.2 23.3 23.4 23.5 https://imis.aist.org/store/detail.aspx?id=PR-RU2025-1. {{cite web}}: Missing or empty |title= (help)
  24. ↑ 24.0 24.1 24.2 24.3 24.4 24.5 https://web.archive.org/web/20210417072135/https://www.recyclingtoday.com/article/arcelormittal-adjusting-steel-production-coronavirus/. Archived from the original on 2021-04-17. {{cite web}}: Missing or empty |title= (help)
  25. ↑ 25.0 25.1 25.2 https://imis.aist.org/store/detail.aspx?id=PR-RU2023-1. {{cite web}}: Missing or empty |title= (help)
  26. ↑ 26.0 26.1 26.2 https://web.archive.org/web/20231117115643/https://www.recyclingtoday.com/news/arcelormittal-steel-canada-eaf-conversion-dri-recycling/. Archived from the original on 2023-11-17. {{cite web}}: Missing or empty |title= (help)
  27. ↑ 27.0 27.1 27.2 https://web.archive.org/web/20221014051953/https://corporate.arcelormittal.com/media/press-releases/arcelormittal-breaks-ground-on-first-transformational-low-carbon-emissions-steelmaking-project/. Archived from the original on 2022-10-14. {{cite web}}: Missing or empty |title= (help)
  28. ↑ 28.0 28.1 28.2 28.3 28.4 28.5 28.6 https://www.steelmarketupdate.com/data-tools/blast-furnace-status/. {{cite web}}: Missing or empty |title= (help)
  29. ↑ 29.0 29.1 29.2 29.3 29.4 (PDF) https://web.archive.org/web/20220129220418/https://corporate-media.arcelormittal.com/media/kl3iewkk/fact-book-2020.pdf. Archived from the original (PDF) on 2022-01-29. {{cite web}}: Missing or empty |title= (help)
  30. ↑ "Fact Book 2022" (PDF). ArcelorMittal. 2023-04-25. Archived from the original (PDF) on 2023-10-29.
  31. ↑ 31.0 31.1 31.2 31.3 "Fact Book 2019" (PDF). ArcelorMittal. Archived from the original (PDF) on 2021-11-03.
  32. ↑ 32.0 32.1 32.2 32.3 32.4 32.5 32.6 32.7 32.8 (PDF) https://corporate.arcelormittal.com/media/3z1ozw5h/arcelor-mittal-fact-book-2021.pdf. {{cite web}}: Missing or empty |title= (help)
  33. ↑ 33.0 33.1 33.2 33.3 "Fact book 2024". Archived from the original on 2025-10-07.
  34. ↑ 34.0 34.1 34.2 34.3 "2024 Sustainability Report" (PDF). Archived from the original (PDF) on 2025-09-27.
  35. ↑ 35.0 35.1 35.2 https://imis.aist.org/store/detail.aspx?id=PR-RU2020-5. {{cite web}}: Missing or empty |title= (help)
  36. ↑ 36.0 36.1 36.2 36.3 36.4 36.5 https://imis.aist.org/store/detail.aspx?id=PR-RU2023-5. {{cite web}}: Missing or empty |title= (help)
  37. ↑ 37.0 37.1 37.2 https://imis.aist.org/store/detail.aspx?id=PR-RU2024-5. {{cite web}}: Missing or empty |title= (help)
  38. ↑ 38.0 38.1 38.2 "AIST North America BF Roundup 2025". Archived from the original on 2025-10-07.
  39. ↑ 39.0 39.1 https://web.archive.org/web/20221017061327/https://www.spglobal.com/commodityinsights/en/market-insights/latest-news/electric-power/073021-arcelormittal-plans-eaf-dri-investments-in-canada. Archived from the original on 2022-10-17. {{cite web}}: Missing or empty |title= (help)
  40. ↑ https://web.archive.org/web/20240904210627/https://www.aist.org/404. Archived from the original on 2024-09-04. {{cite web}}: Missing or empty |title= (help)
  41. ↑ 41.0 41.1 41.2 41.3 https://www.cbc.ca/news/canada/hamilton/arcelormittal-dofasco-decarbonization-update-1.7309360. {{cite web}}: Missing or empty |title= (help)
  42. ↑ 42.0 42.1 42.2 https://web.archive.org/web/20221017082901/https://corporate.arcelormittal.com/media/press-releases/arcelormittal-decarbonisation-project-in-hamilton-canada-confirmed-with-the-announcement-of-a-cad-500m-investment-by-the-government-of-ontario. Archived from the original on 2022-10-17. {{cite web}}: Missing or empty |title= (help)
  43. ↑ https://web.archive.org/web/20220707132750/https://www.waltersgroupinc.com/project/blast-furnace/. Archived from the original on 2022-07-07. {{cite web}}: Missing or empty |title= (help)
  44. ↑ https://web.archive.org/web/20211127231029/https://www.jnegroup.com/portfolio-items/blast-furnace/. Archived from the original on 2021-11-27. {{cite web}}: Missing or empty |title= (help)
  45. ↑ https://www.waltersgroupinc.com/project/blast-furnace/ https://www.aist.org/news/steel-news/2005/july/dofasco-completes-blast-furnace-rebuild/, https://www.waltersgroupinc.com/project/blast-furnace/. {{cite web}}: Check |url= value (help); Missing or empty |title= (help)
  46. ↑ https://www.thespec.com/news/hamilton-region/2009/11/21/dofasco-to-start-third-furnace.html. {{cite web}}: Missing or empty |title= (help)
  47. ↑ (PDF) https://web.archive.org/web/20240911154945/https://www.steel-insights.com/wp-content/uploads/2014/04/Developments-in-NAFTA-2012.pdf. Archived from the original (PDF) on 2024-09-11. {{cite web}}: Missing or empty |title= (help)
  48. ↑ (PDF) https://www.agwaymetals.com/sites/default/files/resources/case%20studies/agwayCSArcelorMittal_102.pdf. {{cite web}}: Missing or empty |title= (help)
  49. ↑ https://www.osti.gov/biblio/129077. {{cite web}}: Missing or empty |title= (help)
  50. ↑ (PDF) https://steelwatch.org/wp-content/uploads/2024/05/SteelWatch_ArcelorMittal_MAY-2024.pdf. {{cite web}}: Missing or empty |title= (help)
  51. ↑ 51.0 51.1 https://www.danieli.com/en/news-media/news/arcelormittal-relies-energiron-dri-technology_37_776.htm. {{cite web}}: Missing or empty |title= (help)
  52. ↑ https://www.linkedin.com/posts/steeldataturkey_flat-eaf-steel-activity-7319054424327307264-SOyG. {{cite web}}: Missing or empty |title= (help)
  53. ↑ https://imis.aist.org/store/detail.aspx?id=PR-RU2022-1. {{cite web}}: Missing or empty |title= (help)
  54. ↑ https://web.archive.org/web/20220117013956/https://dofasco.arcelormittal.com/who-we-are/at-a-glance/our-history.aspx. Archived from the original on 2022-01-17. {{cite web}}: Missing or empty |title= (help)
  55. ↑ https://www.collisionrepairmag.com/superior-steel-gm-to-use-recycled-renewably-produced-steel-from-hamiltons-dofasco-plant/. {{cite web}}: Missing or empty |title= (help)
  56. ↑ 56.0 56.1 56.2 https://web.archive.org/web/20240905153959/https://www.recyclingtoday.com/news/arecelormittal-hamilton-canada-blast-furnace-to-electric-furnace-switch/. Archived from the original on 2024-09-05. {{cite web}}: Missing or empty |title= (help)
  57. ↑ https://web.archive.org/web/20231029214600/https://northamerica.arcelormittal.com/media/news-articles/game-changing-announcement-at-arcelormittal-dofasco. Archived from the original on 2023-10-29. {{cite web}}: Missing or empty |title= (help)
  58. ↑ 58.0 58.1 58.2 58.3 58.4 58.5 https://www.aist.org/sms-group-to-replace-north-america%E2%80%99s-largest-bof. {{cite web}}: Missing or empty |title= (help)

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