ArcelorMittal Montreal steel plant — Canada

ArcelorMittal Montreal steel plant is a steel plant in Canada. Its listed capacity is 2,400,000 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 Long Products Canada GP. By capacity it ranks #4 among 5 steel plants in Canada. It emits about 933,302 t CO₂e a year from Climate TRACE. That is 1.3% of the CO₂e from the 127 facilities in Canada that have an emissions figure in IndustryAtlas. Its CO₂ per unit of capacity is 58% below the national median for this sector.

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-1566468.

In context: how this facility compares

At 2,400,000 t of steel, ArcelorMittal Montreal steel plant is around 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 933,302 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 Long Products Canada GP.

Local climate

ArcelorMittal Montreal steel plant sits in a warm-summer humid continental climate zone (Köppen Dfb), at 45.8°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 mild atmospheric environment (estimated ISO 9223 class C2 — Low), with thermal cycling the leading environmental stress.

In this site’s local climate, a bare 150 °C surface sheds about 1446 W/m² to ambient — roughly 1.11× 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 #4 largest of 5 steel plants in Canada by listed capacity (Climate TRACE).

Nearby industrial sites

• Rio Tinto Fer et Titane steel plant · Steel Plant · 673,836 t CO₂
• Joliette Cement Plant · Cement Plant · 281,008 t CO₂
• Usine De Joliette · Lime Plant · 45,930 t CO₂
• Suncor Montreal Refinery · Refinery · 1,870,058 t CO₂
• Montreal Plant (024) · Other Manufacturing · 37,187 t CO₂
• Montreal Wallboard/Finishing Plant · Other Manufacturing · 32,737 t CO₂

Location

Coordinates 45.83697, -73.25145. View on OpenStreetMap.

Frequently asked questions