The reported plan would replace roughly 90-year-old equipment at U.S. Steel’s Pennsylvania works as part of a previously pledged $11 billion investment programme.
Nippon Steel plans to invest about $3 billion in new hot-rolling equipment at U.S. Steel’s Mon Valley works in Pennsylvania, according to a Nikkei report carried by CNA on October 22. The upgrade would replace equipment that has operated for about 90 years.
The spending forms part of Nippon Steel’s earlier pledge to invest $11 billion in U.S. Steel by 2028, following its acquisition of the company in 2025. The reported $3 billion allocation is therefore part of that commitment, rather than additional spending on top of it.
Hot rolling is the process of heating slabs of iron from blast furnaces and rolling them into thinner steel. Nikkei says the replacement equipment would allow Mon Valley to produce higher-quality steel.
The investment pledge runs through 2028, but the equipment’s operating target is later: Nikkei reports that it is due to enter service in the second half of 2029.
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