Worthington Steel Subsidiary Tempel Announces New Technology for Motor Core Lamination Bonding

By: Worthington Steel, Inc. via Business Wire

October 02, 2025 at 09:00 AM EDT

Worthington Steel, Inc. (NYSE: WS) announced today that its Tempel Steel subsidiary has developed Full Surface Bonding (FSB™), a process for bonding electrical steel laminations which, when stacked together, form a motor core. The patent-pending technology is designed to improve performance and manufacturing efficiency in automotive and industrial motor applications.

FSB™ applies a thin adhesive layer to the laminations before stacking, creating a strong bond that helps eliminate gaps and improve motor efficiency. Compared with traditional motor core stacking methods, FSB™ is more efficient, durable and cost effective.

“FSB reflects the kind of innovation that strengthens our leadership in electrical steel lamination and helps customers deliver next-generation motor technologies,” said Geoff Gilmore, president and CEO of Worthington Steel. “This patent-pending process demonstrates how Worthington Steel and Tempel are creating more value for our customers.”

FSB™ offers several advantages versus traditional bonding technologies, including:

Improved efficiency by reducing wasted energy inside the motor core (lower core loss).
Quieter, smoother operation by reducing noise, vibration and harshness (NVH).
Improved thermal conductivity, which may reduce hot spots and extend motor life.
More active steel in each motor core thanks to thinner coatings (as little as 2–4 microns versus 5–14 microns with traditional methods), supporting greater efficiency and power.
Durability proven in testing, including resistance to heat, fluids and high pressure.
Simpler, more reliable production supporting faster stamping speeds, longer die life and flexible sourcing.

“FSB offers an efficient alternative to traditional bonding techniques by improving NVH, reducing core losses and simplifying the stamping process,” said Cliff Nastas, president of Tempel. “Early feedback from customers suggests it can deliver meaningful performance gains in electric mobility and other advanced applications, as well as improved supply chain resiliency, scalability and cost competitiveness.”

Validated in Tempel testing and customer trials, FSB™ is already approved for production applications at multiple automotive OEMs and represents an important step forward in motor core design and manufacturing. More information on Tempel’s Full Surface Bonding is available at www.tempel.com.

About Worthington Steel

Worthington Steel (NYSE: WS) is a metals processor that partners with customers to deliver highly technical and customized solutions. Worthington Steel’s expertise in carbon flat-roll steel processing, electrical steel laminations and tailor welded solutions is driving steel toward a more sustainable future.

As one of the most trusted metals processors in North America, Worthington Steel and its approximately 6,000 employees harness the power of steel to advance our customers’ visions through value-added processing capabilities including galvanizing, pickling, configured blanking, specialty cold reduction, lightweighting and electrical lamination. Headquartered in Columbus, Ohio, Worthington Steel operates 37 facilities in seven states and 10 countries. Following a people-first Philosophy, commitment to sustainability and proven business system, Worthington Steel’s purpose is to generate positive returns by providing trusted and innovative solutions for customers, creating opportunities for employees and strengthening its communities.

Safe Harbor Statement

Worthington Steel wishes to take advantage of the safe harbor provisions included in the Private Securities Litigation Reform Act of 1995 (the “Act"). Statements by Worthington Steel which are not historical information constitute "forward-looking statements" within the meaning of the Act. All forward-looking statements are subject to risks and uncertainties which could cause actual results to differ from those projected. Factors that could cause actual results to differ materially include risks, uncertainties and impacts described from time to time in Worthington Steel’s filings with the Securities and Exchange Commission.