Ternium Siderar San Nicolás steel plant — Argentina

Ternium Siderar San Nicolás steel plant is a steel plant in Argentina. Its listed capacity is 3,501,000 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 Ternium Argentina SA. By capacity it ranks #1 among 3 steel plants in Argentina. It emits about 3,990,011 t CO₂e a year from Climate TRACE. That is 19% of the CO₂e from the 33 facilities in Argentina that have an emissions figure in IndustryAtlas. Its CO₂ per unit of capacity is 23% above the national median for this sector.

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-1566427.

In context: how this facility compares

At 3,501,000 t of steel, Ternium Siderar San Nicolás steel plant is well above the median steel plant in Argentina (1,600,929 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 3,990,011 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 Argentina

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

Operator

Operated by Ternium Argentina SA.

Local climate

Ternium Siderar San Nicolás steel plant sits in a humid subtropical climate zone (Köppen Cfa), at 33.4°S in the southern 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 humidity / wetness the leading environmental stress.

In this site’s local climate, a bare 150 °C surface sheds about 1326 W/m² to ambient — roughly 1.02× 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 3 steel plants in Argentina by listed capacity (Climate TRACE).

Nearby industrial sites

• ArcelorMittal Acindar Villa Constitución steel plant · Steel Plant · 522,018 t CO₂
• San Pedro Industrial Park · Pulp & Paper Mill · 84,306 t CO₂
• Gerdau Sipar Pérez steel plant · Steel Plant · 21,475 t CO₂
• Capitan Bermudez Pulp and Paper · Pulp & Paper Mill · 136,727 t CO₂
• ARG-San Lorenzo_methanol · Chemical Plant · 60 t CO₂
• Refisan S.A. San Lorenzo Refinery · Refinery · 510,748 t CO₂

Location

Coordinates -33.36629, -60.15156. View on OpenStreetMap.

Frequently asked questions