Union City Filament

Name

Union City Filament

Legal name

Union City Filament Corp.

Website

https://ucfilament.com

Company type

Private

Founded year

1950

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Precision Filament and Cathode Heater Manufacturing

SIC

Electronic Coils, Transformers & Other Inductors (3677), Electromedical & Electrotherapeutic Apparatus (3845), Laboratory Analytical Instruments (3826)

akta.pro primary industry

Aerospace Thermal Management, Insulation & Fire Protection Materials (IMABANAE)

Keywords

• Precision wound filaments
• Cathode heaters manufacturing
• Refractory metal wire forming
• Ion source filaments
• Electron device components

Headquarters

HQ city

Ridgefield

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Filament and Heater Manufacturing: B2B manufacturing and sale of precision wound filaments and cathode heaters for specialized applications. Products are custom-designed to customer specifications for specific applications in healthcare, defense, telecom, and life sciences sectors.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Union City Filament manufactures precision wound filaments and cathode heaters for electron devices and ion sources using proprietary winding and forming processes on refractory and precious metals including tungsten, molybdenum, rhenium, platinum, iridium, and nichrome. Products are custom-designed to customer specifications for mission-critical applications in healthcare, defense, telecommunications, semiconductor manufacturing, and scientific research. The company offers configurations including single helix, double helix, planar, spiral, and toroidal designs, complemented by alumina coating services and certified quality testing.

Product overview

Union City Filament is a precision filament and cathode heater manufacturer established in 1950. The company offers a portfolio of wound wire products organized by design type (Single Helix Cylindrical, Double Helix Cylindrical, Planar and Spiral, Toroidal) and by application (X-Ray Filaments, Scientific Instrument Filaments, Cathode Heaters and Electron Device Filaments, Ion Source Filaments, Ionization Gauge Filaments and Grids, High Temperature Springs and Supports). The company winds and forms refractory and precious metals (tungsten, molybdenum, rhenium, platinum, iridium, nichrome) into precision configurations using proprietary processes. Core products include specialized filaments for medical imaging, semiconductor manufacturing, scientific instruments, and defense/military systems. Aluminum-oxide coating services (UCFRG, HC-97, HC-91-2PC, HC-1EBM, HC-93, FLAME SPRAY) provide electrical insulation and thermal control. Raw materials include Non-Sag Doped Tungsten, High-Temperature Molybdenum, Pure Rhenium, Nichrome, Tungsten-Rhenium alloys, and Special Air-Stable Resistance Alloys.

Differentiator

Problem solved

Functional benefit

Products and services

• Single Helix Cylindrical Coils Fundamental filament and heater designs consisting of single wire coils wound on cylindrical mandrels for specified number of turns at a specified pitch. Used across healthcare, electron device, scientific, and semiconductor industries. Leg formations, coil diameters, and wire diameters can be modified to meet application requirements.
• Double Helix Cylindrical Coils Coils wound into two helices on cylindrical mandrels, used as the core of cathode heater and electron device filament business. Prevalent in applications requiring non-inductive properties. Available in single wire coils and coiled coil configurations.
• Planar and Spiral Heaters and Filaments Single helix or double helix designs having all turns aligned on one plane or formed into concave spirals at specified spherical radii. Used in advanced scientific research and defense systems.
• Toroidal Filaments and Heaters Single helix, single helix center-return, and double helix coils wound cylindrically and then formed circularly. Often used as cathode heaters for microwave tubes or in scientific research applications.
• X-Ray Filaments Precision wound filaments for medical imaging devices, used for over forty years in healthcare providers worldwide. Part of imaging systems at the forefront of digital CT scanning technology. Typically single helix cylindrical coils, with flat emitters also possible.
• Scientific Instrument Filaments Filament designs for scientific research applications, process control applications, and material processing and certification applications. Used in mass spectrometers, leak detectors, and analytical sensors.
• Cathode Heaters and Electron Device Filaments Cathode heaters, microwave tube heaters, and electron tube filaments for vacuum electron devices including traveling wave tubes, klystrons, power grid tubes, thyratrons, and dispenser cathodes. Includes space-qualified heaters and fast warm-up heaters.
• Ion Source and Ion Implanter Filaments Filaments integral to semiconductor manufacturing equipment and scientific research applications. Typically single helix cylindrical filaments, flat spiral filaments, or planar filaments. Materials include tungsten, rhenium, and iridium.
• Ionization Gauge Filaments and Grids Filaments and grids for Bayard-Alpert Ionization Gauges, which are hot cathode devices that analyze atmospheric conditions in vacuum systems and vacuum chambers.
• High Temperature Springs and Supports High temperature springs and supports for vacuum devices and other systems where consistent and reliable component support is critical. Typical configurations include single helix cylindrical coils and precision formed planar designs.
• Non-Sag Doped Tungsten Wire Potassium-doped tungsten wire with sag-resistant properties. Used in medical x-ray tube filaments, scientific instrument filaments, microwave tube heaters, high-temperature springs, surgical devices, and ion source filaments.
• High-Temperature Molybdenum Wire Molybdenum-based alloy with higher recrystallization temperature, providing greater strength and ductility after high temperature exposure. Used for larger microwave tube cathode heaters, getter heaters, high-temperature springs, electrodes, and as overwind material.
• Pure Rhenium Wire Pure rhenium material for scientific instrument filaments, electron and ion source filaments. Retains ductility from subzero to high temperatures with no Ductile-Brittle Transition Temperature. Ideal for mass spectrometer filaments due to resistance to water cycle.
• Nichrome Wire Nickel-chromium air-stable resistance-heating alloy with high mechanical and creep strength. Maximum operating temperature of up to 1,250°C. Used in electric appliances, e-cigarettes, heat guns, soldering irons, and tubular heaters.
• Tungsten-Rhenium Wire 3% rhenium/97% tungsten wire combining non-sag characteristics with improved ductility after recrystallization. Used in incandescent lamps, hot cathodes in vacuum electron devices, and aircraft/automotive windshield defroster wire.
• Special Air-Stable Resistance Alloys Higher performance air-stable heaters and high temperature springs for precise applications. Maximum temperature in air of 1400°C, with 2-4 times longer life than Nichrome. Used in furnace applications, industrial heating, consumer appliances, and e-cigarettes.

Quantifiable outcome

• Products installed in over 150 active US Department of Defense systems including Patriot Missile and Aegis Combat System
• +1 more outcomes

Named customers7 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• UCF GroupcoreOthersUnion City Filament is a UCF Group Company. The company operates as part of a corporate group focused on precision manufacturing of filaments and heaters for specialized applications.

Scale indicators5 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Elmet Technologies: U.S.-based manufacturer of tungsten, molybdenum, and refractory metal products including filaments, heaters, and wire coils for lighting, semiconductor, and defense applications. Direct competitor in refractory metal winding and forming with overlapping defense and electronic device customer base.
• Plansee Group: Global refractory metals manufacturer producing tungsten, molybdenum, and rhenium components for electron tubes, X-ray, semiconductor, and lighting end markets. Closest international peer to UCF in terms of materials expertise and vacuum electron device filament application.
• Rhenium Alloys: U.S. precision manufacturer specializing in pure rhenium and rhenium alloy products including filaments, wire, and sheet for mass spectrometer, X-ray, and high-temperature applications. Direct niche competitor with significant overlap on rhenium-based scientific and medical filaments.

Broad incumbents

• H.C. Starck / Materion Electronics Materials: Large specialty materials supplier producing molybdenum, tungsten, and rhenium products including filaments and heater coils for electronics and aerospace. Materion's broader portfolio spans engineered materials, but its electronic materials division directly competes with UCF on refractory metal filaments and components.
• OSRAM / ams OSRAM Specialty Lighting: Large incumbent in specialty lighting and optoelectronic components with historical strength in tungsten filament production for incandescent and specialty lamps. While focused on lighting rather than electron devices, the precision refractory metal filament capability overlaps with UCF's process expertise.

Regional players

• Tungsten Heavy Powder & Parts: U.S.-based specialty tungsten parts and components manufacturer serving defense, medical, and industrial markets. Comparable in scope of refractory metal forming capabilities though more focused on heavier tungsten parts than precision fine-wire filaments.

Emerging players

• Midwest Tungsten Service: U.S. specialty tungsten and molybdenum product manufacturer including wire, rod, and fabricated components. Smaller and more distribution-focused than UCF but overlapping in raw refractory metal material supply for filament and heater applications.
• Comet Group: Swiss-based manufacturer of X-ray tubes, RF power components, and ionization sources serving medical imaging, semiconductor, and industrial inspection. Complementary rather than fully overlapping—Comet integrates UCF-style filaments into its X-ray and ion source systems, making it both an indirect customer and a downstream competitor.
• Varex Imaging: Leading global independent X-ray tube and image processing component manufacturer for medical and industrial imaging. Downstream integrator that may use UCF-style precision filaments in its X-ray tubes—comparable on the medical imaging filament application but at scale through tube integration.

Others

• CPI International / Communications & Power Industries: Leading manufacturer of vacuum electron devices (TWTs, klystrons, magnetrons) for defense, communications, and scientific markets. Customer of UCF-style cathode heaters and filaments as critical sub-components; included as a downstream integrator and ecosystem participant that anchors demand for UCF components.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

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 Union City Filament