MT vs MLM Comparison

ArcelorMittal SA is an integrated steel and mining company. The company's reportable operating segments include North America, Brazil, Europe, India and JVs, Sustainable Solutions, and Mining. It generates maximum revenue from the Europe segment. The Europe segment produces hot-rolled coil, cold-rolled coil, coated products, tinplate, plate, and slab. These products are sold to customers in the automotive, general, and packaging sectors, as well as producing long products consisting of sections, wire rods, rebar, billets, blooms and wire drawing, and tubular products. Geographically, it derives a majority of its revenue from the United States, followed by Brazil, Canada, Mexico, Argentina, and other markets.

Martin Marietta is a leading US producer of construction aggregates, having produced roughly 200 million tons in 2025. Its aggregate reserves represent approximately 85 years of supply at 2025 production levels. Over the past several years, the company has increased its exposure to aggregates while reducing its presence in cement and downstream businesses such as concrete and asphalt. More recently, Martin Marietta expanded into an aggregate-adjacent business through its acquisition of Lhoist North America, the largest US producer of lime. The company operates across 28 states, with smaller operations in Canada and the Bahamas.