The companies said the record-thickness slabs produced using the Danieli patented DySen caster are 145 mm thick and rolled directly. Yukon Iron and Steel has also recorded casting sequences of 28 heats in 12 hours on a single caster. The plant covers the thickness range of 0.8 to 25.4 mm across endless rolling, semi-endless rolling and coil-to-coil modes. 

The plant has two vertical curved slab casters and a split-mill configuration. This allows for rolling steel grades including low-carbon, medium-carbon, medium-carbon high-strength-low alloy and weather resistant in widths from 900 to 1,500 mm, the companies said. 

Tunnel furnaces between casting and rolling allow for stable slab temperature and buffer capacity. There is also an electrical heating system between roughing and finishing stands for endless rolling of ultrathin strip. All operations use Danieli Automation process control systems, the companies said. 

The companies said the plant started up on 9 April 2024 and has a capacity of about 4.6 million metric tons annually.