Acerinox Columbus Stainless steel plant — South Africa

Acerinox Columbus Stainless steel plant is a steel plant in South Africa. Its listed capacity is 850,000 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 Columbus Stainless (Pty) Ltd. By capacity it ranks #3 among 3 steel plants in South Africa. It emits about 94,444 t CO₂e a year from Climate TRACE. That is 0.52% of the CO₂e from the 24 facilities in South Africa that have an emissions figure in IndustryAtlas. Its CO₂ per unit of capacity is 88% below the national median for this sector.

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-1567186.

In context: how this facility compares

At 850,000 t of steel, Acerinox Columbus Stainless steel plant is below the median steel plant in South Africa (1,899,000 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 94,444 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 South Africa

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

Operator

Operated by Columbus Stainless (Pty) Ltd.

Local climate

Acerinox Columbus Stainless steel plant sits in a subtropical highland climate zone (Köppen Cwb), at 25.8°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 mild atmospheric environment (estimated ISO 9223 class C2 — Low), with humidity / wetness the leading environmental stress.

In this site’s local climate, a bare 150 °C surface sheds about 1353 W/m² to ambient — roughly 1.04× 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 #3 largest of 3 steel plants in South Africa by listed capacity (Climate TRACE).

Nearby industrial sites

• Sasol Polymers Secunda, Secunda · Petrochemical · 1,151,305 t CO₂
• ZAF-Gert Sibande_ammonia · Chemical Plant · 1,240,800 t CO₂
• Pretoria Cement Plant · Cement Plant · 239,414 t CO₂
• Scaw Metals Group Germiston plant · Steel Plant · 493,095 t CO₂
• ArcelorMittal Vanderbijlpark Steel Works · Steel Plant · 4,161,451 t CO₂
• Natref Sasolburg Refinery · Refinery · 771,500 t CO₂

Location

Coordinates -25.79315, 29.49744. View on OpenStreetMap.

Frequently asked questions