Tempel

What Tempel does

Tempel is a global manufacturer of high-precision electrical steel laminations, the thin stacked steel components that form the magnetic cores of motors, generators, and transformers. Founded in Chicago in 1945, the company operates as a wholly-owned division of Worthington Steel (NYSE:WS) following Worthington Industries' 2024 separation of its Steel Processing business. Tempel produces two primary product lines — Motor and Generator Laminations (stamped as thin as 0.20mm) and Transformer Laminations (including E and I laminations, distributed-gap cores, and step-lap miter cores) — supported by a vertically integrated value chain spanning design, engineering, tooling, progressive stamping, annealing, bonding, core assembly, die casting, prototyping, material sourcing, and overmolding.

The company serves enterprise customers across four horizontal segments: eMobility (traction motors, transformers, and charging stations for electric vehicles), Transportation (rotors and stators for vehicle manufacturers), Industrial Motors (HVAC, pumps, and power tools), and Energy (oil and gas, renewables, power generation, and distribution). Named customers include MAHLE (a major EV motor customer recognized via Best Supplier of the Year 2024 and Zero PPM Award), Schneider Electric, SPX, VF Transformers, and Power Smiths. Operations span six manufacturing countries — the United States (Chicago headquarters plus East and West Coast distribution centers), Canada, Mexico, China, India, and Germany — with global headcount of 1,001-5,000 employees.

Tempel's business model is a B2B custom-manufacturing operation: products are quote-priced against customer specifications under multi-year contracts, with go-to-market executed through direct sales engagement, technical support teams, and major industry events such as CWIEME Berlin and the Electric and Hybrid Vehicle Technology Expo. Revenue derives from hardware sales of laminations and professional services tied to value-added manufacturing capabilities. The company holds multiple granted patents in rotor core production, annealing furnaces, generator exciter manufacturing, and large rotor/stator lamination production, and maintains industry certifications including ISO 9001, IATF 16949, and ISO 14001. Recent strategic priorities include a roughly $85 million Burlington, Ontario facility expansion (opening June 2026) and continued capacity build-out in transformer cores to serve North American grid modernization demand.

Name

Tempel

Legal name

Tempel Steel Company, LLC

Website

http://www.tempel.com/

Company type

Private

Founded year

1945

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Tempel is a global manufacturer of high-precision electrical steel laminations for motors, generators, and transformers, serving enterprise customers in eMobility, transportation, industrial motors, and energy across six manufacturing countries. The company operates as a division of Worthington Steel (NYSE:WS).

Ownership category

akta.pro rank

Product category

Electrical Steel Laminations Manufacturing

NAICS

Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing (334416), Power, Distribution, and Specialty Transformer Manufacturing (335311), Forging and Stamping (3321)

SIC

Electronic Coils, Transformers & Other Inductors (3677), Power, Distribution & Specialty Transformers (3612), Motors & Generators (3621), Metal Forgings & Stampings (3460)

akta.pro primary industry

Transformers & Magnetics (Power/Signal) (HDAHANAD)

akta.pro secondary industries

Passive Components (Resistors, Capacitors, Inductors, Ferrites) (IMAGAJAA), Medium-Voltage Distribution Components (MV breakers, disconnects, reclosers, MV terminations & joints) (IMAGAEAL)

Keywords

• Electrical steel laminations
• Motor and generator laminations
• Transformer core laminations
• Precision metal stamping
• Stator and rotor cores

Headquarters

HQ city

Chicago

HQ country

United States

HQ region

North America

Offices8 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Electrical Steel Laminations: Manufacturing and sale of high-precision electrical steel laminations for motors, generators, and transformers. Products include motor and generator laminations, transformer laminations (E's and I's, DG cores, step lap miter cores), distributed gapped cores, and fully assembled cores.
2. Manufacturing Services: Value-added manufacturing services including progressive stamping, annealing, bonding, core assembly, die casting, and tooling. Services range from prototyping to full-scale production.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Tempel manufactures high-precision electrical (magnetic) steel laminations for motors, generators, and transformers, with stamping capability down to 0.20mm. Its two core product lines are motor and generator laminations (for handheld power tools through EVs) and transformer laminations (E's and I's, DG cores, step lap miter cores), supported by value-added services including design & engineering, prototyping, material sourcing, tooling, progressive stamping, annealing, bonding, core assembly, die casting, and overmolding.

Product overview

Tempel is a global manufacturer of high-precision electrical steel laminations, producing two primary product lines: Motor and Generator Laminations (as thin as 0.20mm for applications from handheld power tools to electric vehicles) and Transformer Laminations (including E's and I's, DG cores, and step lap miter cores for various kVA ratings). These core products are supported by a comprehensive suite of value-added capabilities including Design & Engineering Services, Progressive Stamping, Core Assembly, Annealing, Bonding, Die Casting, Prototyping, Material Selection & Purchasing, Tooling & Quality Production, and Overmolding. The company operates as a component manufacturer serving diverse industries including eMobility (traction motors, charging stations), Transportation (rotors, stators), Industrial Motors (handheld tools to large appliances), and Energy (oil & gas, renewables, power distribution).

Differentiator

Problem solved

Functional benefit

Products and services

• Motor and Generator Laminations High-precision electrical steel laminations for motors and generators with stamping capabilities as thin as 0.20mm, serving applications from handheld power tools to electric vehicles.
• Transformer Laminations Precision transformer lamination products including E's and I's, DG (distributed gap) cores, and step lap miter cores with varying kVAs and specs for oil & gas, power generation, renewables, industrial, and commercial energy distribution applications.
• Compacore

Quantifiable outcome

• Laminations as thin as 0.20mm for motor and generator applications
• +2 more outcomes

Named customers6 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Scale indicators7 records

Recent moves9 records

Expansion highlights6 records

Broad incumbents

• POSCO: POSCO is a leading Korean steelmaker with a significant electrical steel product line (Hyper NO, Hyper Grain-Oriented) and downstream materials business serving EV motors and transformers. Comparable to Tempel as a global electrical steel supplier and competitor for the same high-end motor-lamination business, particularly with Korean and global EV OEMs.
• Thyssenkrupp (Electrical Steel): Thyssenkrupp Steel Europe is one of the world's largest producers of non-oriented and grain-oriented electrical steel under the powercore® brand, supplying motor, generator, and transformer markets. Directly comparable as a mill-grade electrical steel supplier and a lamination-capable partner for the same European automotive and industrial OEMs Tempel serves from Nagold.
• voestalpine (Electrical Steel): voestalpine's Steel Division produces high-quality electrical steel (isovac®) for motors, generators, and transformers, and offers downstream lamination processing capabilities. Comparable to Tempel as a premium European electrical steel/lamination supplier serving transformer manufacturers (e.g., Schneider, ABB-style customers) and traction motor OEMs with overlapping technical specifications.
• Cleveland-Cliffs (formerly AK Steel): Cleveland-Cliffs is a major North American flat-rolled steel producer that inherited AK Steel's electrical steel business, producing non-oriented and grain-oriented electrical steel (AK Steel/Selkie/Tran-Cor) used in motors, generators, and transformers. Comparable as both an electrical steel mill and a vertically integrated supplier of transformer/motor laminations to overlapping OEMs in the same North American grid/EV supply chain.
• Hitachi Metals (now Proterial): Proterial (formerly Hitachi Metals) is a major global manufacturer of electrical steel, magnetic materials, and amorphous metal (Metglas®) cores for transformers. Highly comparable to Tempel as a manufacturer of advanced magnetic and lamination materials for EV traction motors and distribution transformers, competing for the same Tier-1 Japanese and global OEM relationships.
• JFE Steel: JFE Steel is a major Japanese producer of high-grade non-oriented electrical steel (JN series) supplying motor and transformer manufacturers globally. Comparable to Tempel as a mill-level supplier of electrical steel grades (especially for high-efficiency EV traction motors) feeding the same OEM design chain.
• Cogent Power (Tata Steel): Cogent Power, part of Tata Steel, produces grain-oriented and non-oriented electrical steel (Trans-ill, Nilom), and is a major European and global lamination supplier. Comparable to Tempel as a full-stack electrical steel and lamination manufacturer serving transformer OEMs (e.g., Trench, Schneider-style customers) and industrial motor producers across EMEA.

Emerging players

• Wuxi Baolin / Jiayi Electrical (China laminators): Chinese independent electrical steel lamination and motor core manufacturers (e.g., Wuxi Baolin, Jiayi) serving the country's large EV traction motor and appliance motor industries. Comparable to Tempel on the motor/generator lamination side as competitive, cost-advantaged producers addressing similar applications (motor cores for EVs, appliances, industrial drives).

Direct peers

• Trafalgar Enterprises / Core-Tronics: North American independent transformer core and lamination manufacturer serving utility, distribution, and industrial transformer OEMs. Directly comparable to Tempel's Burlington transformer-core business as an independent lamination/core assembler competing for similar distribution and small power transformer customers.
• Sitem Group: Sitem Group is an Italy-based manufacturer of transformer cores and electrical steel laminations recently acquired by Worthington Steel — Tempel's parent. Despite the ownership linkage, Sitem is the most direct functional peer: a transformer-core and lamination manufacturer with European plants (Italy, Slovakia, Switzerland) and overlapping customers in the European utility and industrial transformer market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Tempel