ArcelorMittal South Africa’s steel operations comprise four major facilities, which produce both flat and long steel products:
 
The flat steel operations at Vanderbijlpark and Saldanha together have the capacity to produce 5.6 million tonnes of liquid steel per annum making them the largest suppliers of this commodity in Africa.

Vanderbijlpark has the capacity to produce 4.4 million tonnes of liquid steel per annum, which constitutes some 78% of South Africa’s flat steel requirements. Its product range includes hot rolled steel in coil and plate; cold rolled; hot-dipped galvanised; electro-galvanised; colour coated and tinplate coil and sheet.

Saldanha is one of the world’s most technologically advanced and environmentally friendly steel mills, producing ultra thin hot rolled coil for stringent applications in the domestic and select export markets. The state-of-the-art plant produces 1.2 million tonnes of steel per annum.

The company's Newcastle and Vereeniging operations, service some 50% of the local market for long steel products, while also exporting products internationally. The two mills have capacity for total annual sales of 2.2 million tonnes, 20% of which is typically exported every year. Of the remainder about 1.6 million tonnes are rolled profile products, 90 000 tonnes seamless tube and 20 000 tonnes forged products. About 80% of the company's long steel products are generated by Newcastle, an integrated steel plant, while Vereeniging is an electric arc furnace-based steel works.

ArcelorMittal South Africa also owns a Coke & Chemicals business based in Pretoria, which produces market coke for the ferro-alloys industry. It also operates coke batteries in Vanderbijlpark and Newcastle and is furthermore responsible for the processing and beneficiation of metallurgical and steel by-products, such as coal tar pitch.