Steel Manufacturing Companies in Connecticut

Connecticut has approximately 4,200 manufacturing establishments and 160,000 manufacturing employees. Connecticut is a precision manufacturing powerhouse, home to Pratt & Whitney, Sikorsky, and Electric Boat, with deep expertise in aerospace and defense components.

Connecticut contributes to the national steel manufacturing landscape. Steel manufacturing includes integrated steel mills, electric arc furnace (EAF) mini-mills, and specialty steel producers that collectively produce approximately 80 million tons of steel annually in the US. The industry is dominated by companies like Nucor, US Steel, Steel Dynamics, and Cleveland-Cliffs, with mini-mills now accounting for over 70% of domestic production.

Integrated Steel Mills: Facilities operating blast furnaces and basic oxygen furnaces to produce steel from iron ore, like US Steel and Cleveland-Cliffs.

EAF Mini-Mills: Electric arc furnace operators like Nucor and Steel Dynamics producing steel from scrap and DRI.

Specialty Steel Producers: Companies producing stainless steel, tool steel, alloy steel, and other specialty grades for demanding applications.

Steel Service Centers: Distribution and processing companies that slit, cut, blank, and process steel for manufacturing customers.

Major industrial centers in Connecticut include Hartford, Bridgeport, New Haven, Stamford, and Waterbury. These cities have concentrations of manufacturers across sectors including aerospace manufacturing, defense manufacturing, and medical device manufacturing.