Cleveland-Cliffs

Cleveland-Cliffs is a vertically integrated North American steel producer headquartered at 200 Public Square in Cleveland, with roots reaching back to the Cleveland Iron Mining Company of 1847. The company mines its own iron ore and makes pellets and direct reduced iron, processes ferrous scrap, and runs steelmaking, finishing, stamping, tooling and tubing operations, which makes it largely self-sufficient in raw materials. It is the largest flat-rolled steel producer in North America, with facilities across nine states and Ontario following the Stelco acquisition that closed in November 2024, and roughly 25,000 employees. Output feeds automotive sheet, construction plate and structural products. Its master labor agreement with the United Steelworkers moved to rolling 48-hour extensions in late September 2026.

The product catalog breaks into five families, and the naming matters when you are writing a submittal. Carbon sheet runs hot-rolled, cold-rolled, electrogalvanized, hot-dip galvanized and galvannealed, plus GALVALUME (AZ), Type 1 and Type 2 aluminized and enameling stock; the advanced high-strength grades carry the NEXMET, ULTRALUME and ULTRA FORM marks.

Stainless spans more than fifty alloys across austenitic, ferritic, martensitic, duplex and precipitation-hardening families, with NITRONIC, CHROMESHIELD and THERMAK as the branded lines. Electrical steel is sold as grain-oriented and non-oriented product under CARLITE, DI-MAX, TRAN-COR and MOTOR-MAX. Plate covers carbon and HSLA, with FINELINE as the named line, and tubular is electric resistance welded carbon and stainless in a range of shapes.

Cleveland Works, the plant behind the address, sits on the Cuyahoga River and runs two blast furnaces, two basic oxygen furnaces with continuous strand casters, an 84-inch hot strip mill, a pickle line, a five-stand tandem mill and a hot-dip coating line configured for both galvanize and galvanneal. It ships hot-rolled, cold-rolled and galvanized sheet along with semi-finished slabs, and the customer mix it names is automotive, construction, converter and distribution. The river position gives it Port of Cleveland and Great Lakes shipping alongside highway and rail access.

Butler Works in western Pennsylvania is the specialty end of the network: about 3.5 million square feet, a 230-ton electric arc furnace feeding a 175-ton argon-oxygen decarburization vessel the company calls the largest of its kind, then continuous casting, hot and cold rolling and finishing. TRAN-COR is described there as the only high-permeability electrical steel produced in the United States, with regular grain-oriented product also made domestically at the same site. Cold rolled non-oriented grades go into motors, generators and lighting ballasts, a ferritic chrome grade handles heat and corrosive service, and the plant also casts ultra-low-sulfur carbon slabs that feed advanced high-strength sheet. Butler’s order book is transformers, electric motors, generators, appliances, stainless converters and automotive exhaust.

Sixteen steelmaking works are named in total, clustered in Ohio, Indiana, Pennsylvania and Michigan, with the Toledo direct reduction plant producing hot-briquetted iron as a lower-impact feedstock for the melt shops. Two engineered items sit outside the mill product list and are worth knowing about if you specify assemblies rather than coil: C-STAR, steel tubes used as reinforcement, and a purpose-built battery enclosure. On disclosure, sustainability reporting is aligned to the GRI and SASB standards for the iron and steel sector, and the consolidated Scope 1 and Scope 2 emissions data carries external limited assurance, which is the form project teams increasingly need when they collect supplier figures for embodied-carbon accounting.