What Thermal Process Holdings does

Thermal Process Holdings is a privately held industrial heat treating holding company headquartered in Elkhorn, Wisconsin, that operates a network of four production facilities and a logistics hub across the Midwest (Wisconsin and Illinois). Through three legacy sub-brands — Rockford Heat Treaters (serving Rockford, IL for over 50 years), Hudapack Metal Treating (founded 1985, three-plant operation), and Diamond Heat Treat — the company delivers a comprehensive suite of metallurgical services including atmosphere hardening, vacuum heat treating, induction hardening, gas nitriding, aluminum solution and aging, carburizing, and cryogenic processing. The company operates 70+ furnaces across more than 200,000 square feet of production capacity and maintains ISO 9001:2015, AS9100D, and NADCAP certifications that qualify it for aerospace and defense work.

The company serves a roster of enterprise customers across automotive (Ford, GM, Stellantis, Allison Transmission, Meritor), heavy equipment and agriculture (Caterpillar, John Deere, CNH Industrial, Vermeer), aerospace, tooling, and small-to-mid-sized manufacturers. Revenue is generated through a job-shop, quote-based model where customers submit parts for processing priced per job or per pound depending on specifications, material, volume, and process type. The go-to-market is direct B2B field sales supported by regional phone numbers, an online quote request form, and customer testimonials emphasizing reliability, on-time delivery, and metallurgical expertise.

Thermal Process Holdings was formed as a roll-up platform unifying the three sub-brands under shared quality standards and integrated operations, with Patriot Capital providing institutional backing in 2019 and Hudapack Metal Treating acquired in 2018. The business model is asset-heavy industrial services with high capital intensity (furnaces, facility infrastructure, certification maintenance) and a long-cycle supplier qualification process that creates stickiness with major OEM customers but exposes the company to concentrated enterprise revenue risk and limited pricing transparency.

Name

Thermal Process Holdings

Legal name

Thermal Process Holdings

Website

https://thermalprocessholdings.com

Company type

Private

Founded year

1997

Operating status

Operating

Headcount range

251–500 employees

Short description

Thermal Process Holdings is a Midwest-based industrial heat treating holding company operating 70+ furnaces across four facilities, serving automotive, aerospace, and heavy equipment OEMs including Ford, GM, and Caterpillar via its Rockford Heat Treaters, Hudapack, and Diamond sub-brands.

Ownership category

akta.pro rank

Product category

Industrial Heat Treating Services

NAICS

Metal Heat Treating (332811), Coating, Engraving, Heat Treating, and Allied Activities (33281)

SIC

Industrial Process Furnaces & Ovens (3567), Fabricated Plate Work (Boiler Shops) (3443)

akta.pro primary industry

Heat Treatment & Thermal Processing Furnaces (Hardening, Annealing, Induction) (IMAHADAI)

Keywords

• Industrial heat treating
• Vacuum heat treating
• Induction hardening
• Metal treating services
• Nitriding services

Headquarters

HQ city

Elkhorn

HQ country

United States

HQ region

North America

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Heat Treating Services: Job-shop style heat treating services where customers submit parts for processing based on specifications. Revenue generated through per-job or per-pound pricing depending on process type, material, and volume. Services include atmosphere hardening, vacuum processing, nitriding, carburizing, aluminum heat treating, and induction hardening.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Thermal Process Holdings is a holding company that operates a network of specialized industrial heat treating facilities serving virtually every industrial sector. The company provides job-shop heat treating services including atmosphere hardening, vacuum heat treating, induction hardening, nitriding, carburizing, aluminum solution and aging, and metallurgical testing through 70+ furnaces across four Midwest production facilities, processing customer-supplied metal parts to specified metallurgical standards.

Product overview

Thermal Process Holdings is a unified network of three specialized heat-treating sub-brands—Rockford Heat Treaters, Hudapack Metal Treating, and Diamond Heat Treat—that collectively deliver a comprehensive range of industrial heat treating services. The company operates as a platform providing core heat treating processes (atmosphere hardening, vacuum processing, induction hardening, nitriding, aluminum treatment, carburizing) through specialized facilities totaling over 200,000 square feet of furnace production capacity. Rockford Heat Treaters focuses on high-volume batch and pusher furnace operations; Hudapack Metal Treating specializes in aluminum processing, vacuum processing, and induction treatments; and Diamond Heat Treat provides specialized services including cryogenic processing and tool steel treatment. All facilities operate under unified quality standards, process controls, and testing protocols to ensure consistent results across the network.

Differentiator

Problem solved

Functional benefit

Products and services

• Continuous & Batch Integral Furnaces High-capacity heat treating processing using continuous and batch furnace systems with specialized fixturing for delicate or complex geometries, serving manufacturers needing high-volume production or specialized part handling.
• Vacuum Heat Treating and Vacuum Tempering Distortion-resistant heat treating processing using multiple vacuum furnaces with a dedicated vacuum temper for fast, precise heat treating of high-precision and high-performance materials, including tooling and aerospace components.
• Gas Nitriding & Fluidized Bed Processing Low-distortion surface treatment using multiple pit furnaces handling daily nitriding demand from the smallest components to loads up to 10,000 pounds, providing enhanced hardness and fatigue strength.
• Aluminum Solution and Aging Complete solution heat treatment and aging for all aluminum alloys, supported by precise computer-controlled systems, providing required mechanical properties for aluminum components used across industries.
• Induction Hardening and Induction Annealing Targeted, localized hardening for wear-critical surfaces including continuous induction hardening and induction annealing for fasteners, gears, and shafts requiring precise surface hardening patterns.
• Atmosphere Hardening & Annealing Controlled environment heat treating processes for carburizing, carbonitriding, hardening, and annealing of steel components in batch and continuous furnaces.
• Metallurgical Testing & Process Verification Hardness testing, microstructure evaluation, and process validation for consistent quality assurance across all facilities, supporting aerospace AS9100/NADCAP and ISO 9001:2015 quality requirements.
• Rockford Heat Treaters Facility Services Heat treating facility serving the Rockford, Illinois area for over 50 years, offering batch furnaces, pusher furnace, tempering furnaces, metallurgical lab, and pick up & delivery services from a facility over 50,000 square feet.
• Hudapack Metal Treating Facility Services Elite commercial heat treating resource in the Midwest since 1985, operating three plants and providing aluminum processing, vacuum processing, induction fastener heating, induction hardening annealing, atmosphere carburizing, atmosphere hardening, and gaseous nitrocarburizing.
• Diamond Heat Treat Facility Services Heat treating service provider offering a wide spectrum of services including carburizing, cryogenic/deep freezing, ferritic nitrocarburizing/nitempering, neutral hardening, nitriding, tool steel processing, vacuum full annealing, tempering, carbonitriding, normalizing, and stress relieving.

Quantifiable outcome

• 50+ years in business with approved supplier status for America's largest manufacturers
• +1 more outcomes

Named customers9 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators6 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Ipsen: Global manufacturer of industrial heat treating furnaces and vacuum ovens. Adjacent to TPH as an equipment supplier and process technology provider, and competes indirectly for some aerospace and tooling customer relationships.
• AFC-Holcroft: Industrial furnace and oven OEM serving heat treaters worldwide. While not a direct service competitor, AFC-Holcroft supplies the type of equipment TPH operates and represents the supply-side counterpart to TPH's service business.

Direct peers

• Heat Treating Inc. (HTI): Commercial heat treating services company offering a broad portfolio including atmosphere, vacuum, induction, and nitriding. Comparable mid-market competitor serving automotive, heavy equipment, and industrial customers.
• Bodycote: World's largest commercial heat treating services provider with hundreds of furnaces globally. Direct peer across all of TPH's core service lines (atmosphere, vacuum, nitriding, induction) and serves many of the same OEM end-markets including automotive, aerospace, and heavy equipment.
• National Heat Treat (NHT): Multi-facility US commercial heat treating services provider with capabilities across vacuum, atmosphere, induction, and aluminum processing. Competes with TPH for the same aerospace, defense, and industrial OEM accounts.
• Bluewater Thermal Solutions: Multi-facility commercial heat treating services provider with comparable furnace capacity and geographic footprint across the Midwest and Eastern US. Serves automotive, heavy equipment, and industrial OEM customers with similar process capabilities.
• Solar Atmospheres: Largest independent commercial vacuum heat treating company in North America. Direct overlap with TPH's vacuum heat treating and vacuum temper services, especially in aerospace, medical, and tool steel applications.
• Metex Heat Treating: Midwest-based commercial heat treating job shop offering atmosphere, vacuum, induction, and nitriding services. Comparable to TPH in scale, geography, and customer profile, with strong automotive and industrial OEM exposure.
• Advanced Heat Treat Corp. (AHt): Specialized heat treating services provider with strong aerospace and industrial OEM relationships. Overlaps with TPH in vacuum, nitriding, and induction services and competes for similar safety-critical applications.
• Paulo Products: Privately held commercial heat treating and brazing services company based in St. Louis, MO — directly comparable Midwest-based competitor serving similar automotive, aerospace, and industrial OEM customers with multi-facility operations.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/thermal-process-holdings

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries3 records

Funding overview

Funding rounds1 record

Investors1 record

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

M&A1 record

Investments

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

Frequently asked questions about Thermal Process Holdings