New Castle Stainless Plate, LLC provides specialty and standard grades of stainless steel plate in some of the widest, thickest, and longest dimensions in North America. The mill portfolio includes key grades that offer significant weight savings as well as high mechanical strength for lighter and stronger stainless. End markets include infrastructure, transportation, power generation, heavy chemical industries, water processing, mining, and the oil & gas sector. The company, which employs 100+, is American-owned and based in New Castle, Indiana.

New Castle Stainless Plate, LLC is a unique organization in the steel industry. We are owned, in part by our senior leaders, who take tremendous pride—every day—in selling, producing, and delivering world-class stainless plate. Our operations focus on safety, cost efficiencies, and on-time delivery—the hallmarks of our New Castle mill. We lead the industry with the absolute highest quality specialty and standard grade stainless steel plate. And our portfolio represents some of the widest, longest, and thickest stainless plate dimensions available in North America.

New Castle Stainless Plate offers one of the broadest portfolios in North America with tremendous size range. Our tailor-made standard and specialty grades are available in thicknesses from 3/16” to 6” (4.76 mm – 150 mm); in widths up to 144” (3.5 m); and in lengths up to 420” (10.5 m). The New Castle mill has a reputation for achieving exceptionally high quality plate in terms of internal micro-cleanliness, flatness tolerances, and surface condition.

Commitment to Quality

The New Castle Stainless Plate mill sits on hallowed ground when it comes to steelmaking. More than 100 years ago the location was a rolling mill for shovels and plows destined for Midwestern farms and fields. Now the mill is a state-of-the-art example of stainless production supported by a technical team with world-class knowledge of the standards and applications relating to our stainless grades. In 2010, the New Castle mill completed a $58 million capital investment program that increased on-time delivery, improved quality and consistency, and made for safer and more environmentally responsible operations. The upgrades included new equipment to streamline the plate production process, including a new ASBF line (with in-line annealing, shot blasting, and leveling) and improvements to the 120” wide line.