05/29/2026
Pig iron helps make the steel that holds modern construction together.
It is a critical input in the high-performance steel used in structural frames, transfer systems, outriggers, and other demanding building applications where strength, consistency, and long-term performance matter.
The quality of the steel depends on the quality of the feedstock behind it. Pig iron gives steelmakers the chemistry, purity, and consistency needed to produce stronger, more reliable steel for major construction projects.
One Vanderbilt in New York is a clear example.
Rising 1,401 feet above Midtown Manhattan, One Vanderbilt is a 93-story skyscraper with an observation deck on its top three floors. The tower uses about 26,000 tons of steel in its frame, created with an estimated 5,200 tons of pig iron.
That steel does far more than hold up floors. It supports long spans, transfer systems, outriggers, trusses, and the structural frame that allows a tower of this scale to rise in a dense urban core. For that kind of performance, steelmakers need tighter chemistry control, and pig iron provides it.
That is the scale of pig iron’s role in construction.
Pig iron is not visible once a building is complete, but it helps make possible the steel that holds up the towers shaping American cities. The United States still imports 100% of its merchant pig iron, even though this feedstock is essential to the high-grade steel used across construction, infrastructure, manufacturing, and defense.
North American Iron is working to change that by producing America First merchant pig iron and putting domestic resources to work for the U.S. steel industry.