US Steel and Nippon Steel announce new investments in Pennsylvania and Indiana

Friday, 26 September 2025 12:42:14 (GMT+3)   |   Istanbul

The board of directors of United States Steel Corporation (US Steel) has announced that it has approved $300 million in new projects across Pennsylvania and Indiana, advancing Japanese steelmaker Nippon Steel’s $11 billion US investment plan. The initiatives will modernize facilities, improve sustainability and strengthen US Steel’s premium product offerings.

Slag recycler in Pennsylvania

At the Edgar Thomson plant in Braddock, US Steel is moving ahead with a $100 million slag recycler project. After permit approval, engineering planning will be finalized, while construction is expected to begin next year. The slag recycler will convert steelmaking byproducts into materials for cement, while it will reduce landfill waste, cut air emissions, and generate additional revenue through the sale of byproducts.

Hot strip mill upgrades in Indiana

The board has also approved a $200 million investment at Gary Works, Indiana, to improve the hot strip mill to optimize production costs and expand premium product offerings.

Strategic partnership with Nippon Steel

These projects reflect the ongoing strategic partnership with Nippon Steel, which is bringing expertise, technology and financial backing to US Steel’s operations. Nippon Steel engineers are already working with US Steel across North America to improve efficiency and modernize integrated mills.

DamlaTükenmez
Damla Tükenmez
Editor
All Articles by the Author

I graduated from the Department of English Language and Literature at Kocaeli University. Since 2020, I have been producing content focused on the steel industry. At SteelOrbis, I write industry news on a wide range of topics, including EU and UK trade measures, regulatory changes, quota utilization, and the statements and views of organizations representing the Turkish steel sector.

Similar articles

Nippon Steel to invest up to $2.5 billion to modernize US Steel’s Mon Valley operations

US Steel to build DRI plant to strengthen mini-mill operations

US Steel unveils “new era of growth” in partnership with Nippon Steel

Nippon Steel details its investments for US Steel

Nippon Steel unveils massive investment to gain approval for US Steel acquisition

Nippon Steel to invest in US Steel’s two plants following acquisition

Mexico's domestic ferrous prices inch up, they could grow by MXN300/mt in Oct

US flat steel prices up at Q4 start, HRC futures give back some recent gains

Fourth Brazilian iron ore miner hit by Brazil-China freight rates and low ore prices

Algoma Steel expects negative adjusted EBITDA in Q3 on power outage impact