ArcelorMittal Dofasco steel plant — Canada

ArcelorMittal Dofasco steel plant is a steel plant in Canada. Its listed capacity is 4,050,000 t of steel. Steel plants burn coal in blast furnaces or use electric arcs to melt scrap; in both cases the molten metal must be kept above 1,500°C and transferred through extensive hot piping and vessels. It is operated by ArcelorMittal Dofasco GP. By capacity it ranks #1 among 5 steel plants in Canada. It emits about 3,094,399 t CO₂e a year from Climate TRACE. That is 4.4% of the CO₂e from the 127 facilities in Canada that have an emissions figure in IndustryAtlas. Its CO₂ per unit of capacity is 18% below the national median for this sector.

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-32440399.

In context: how this facility compares

At 4,050,000 t of steel, ArcelorMittal Dofasco steel plant is well above the median steel plant in Canada (2,500,000 t of steel). Subsector: iron-and-steel. As steel plant, it requires high process heat (typically 800–1500°C) for its core industrial operations, supplied by boilers, furnaces or direct combustion. Steel plants burn coal in blast furnaces or use electric arcs to melt scrap; in both cases the molten metal must be kept above 1,500°C and transferred through extensive hot piping and vessels.

Capacity & CO₂-intensity comparison computed from Climate TRACE industrial facilities data; sector role based on engineering reference.

What 3,094,399 t CO₂e a year looks like

This facility's estimated annual CO₂e (Climate TRACE, modelled) in everyday equivalents from the US EPA Greenhouse Gas Equivalencies calculator:

Equivalencies: US EPA Greenhouse Gas Equivalencies. Emissions: Climate TRACE.

Capacity vs largest steel plants in Canada

Listed capacity (t of steel), Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).

Operator

Operated by ArcelorMittal Dofasco GP.

Local climate

ArcelorMittal Dofasco steel plant sits in a warm-summer humid continental climate zone (Köppen Dfb), at 43.3°N in the northern hemisphere.

Köppen zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).

Site climate & environmental severity

This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with thermal cycling the leading environmental stress.

In this site’s local climate, a bare 150 °C surface sheds about 1412 W/m² to ambient — roughly 1.09× the loss at a 20 °C reference. Reference-surface calculation at a 150 °C surface from WorldClim climate normals (ASTM C680 / ISO 12241) — an indicative per-climate comparison, not a measurement of this site’s specific equipment. Open method dataset: DOI 10.5281/zenodo.20787408 (CC BY 4.0).

Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.

How it compares & nearby sites

The #1 largest of 5 steel plants in Canada by listed capacity (Climate TRACE).

Nearby industrial sites

• Dundas Operations · Lime Plant · 427,791 t CO₂
• Meridian Brick - Burlington · Other Manufacturing · 21,726 t CO₂
• Meridian Brick - Burlington · Other Manufacturing · 21,693 t CO₂
• Meridian Brick - Aldershot · Other Manufacturing · 36,765 t CO₂
• Meridian Brick - Aldershot · Other Manufacturing · 15,469 t CO₂
• Mississauga Cement Plant · Cement Plant · 527,094 t CO₂

Location

Coordinates 43.269, -79.80159. View on OpenStreetMap.

Frequently asked questions