MK Magnetics

What MK Magnetics does

MK Magnetics, Inc. is a US-based specialty manufacturer of custom tape wound soft magnetic cores, founded in April 2003 and operating from a 70,000 sq. ft. manufacturing campus in Adelanto, California. The company produces C-cores, E-cores, toroids, bars, blocks, and custom-shaped cores from nanocrystalline, amorphous, silicon steel, nickel, and cobalt alloys, with finished weights spanning from fractions of an ounce to over 4,000 lbs. Its proprietary Optifficient sub-brand delivers ultra-low loss amorphous cores claiming up to 30% lower loss than standard amorphous cores, and its in-house process chain (slitting, winding, annealing, cutting/gapping, insulating, testing) is performed entirely on-site with no subcontracting. MK Magnetics holds ISO 9001:2015, ITAR, DFARS, RoHS, and REACH compliance, and its products are deployed across aerospace, military/defense, medical imaging (MRI/CT), renewable energy, EV charging, smart grid, pulsed energy, and oil & mineral exploration applications.

The company operates a sales-led, quote-based go-to-market model selling direct from its Adelanto HQ and through five regional channel partners covering the UK (PPM), France/Italy/Spain (Pulse MC2), Germany/Austria/Switzerland/CEE (HVP), Japan (AET), and the US Eastern Seaboard/PA/OH (Diligent Sales). Pricing is not publicly disclosed; all orders are custom-engineered per specification, with standard lead times of 3-5 weeks and expedited options. The company is privately held with no disclosed institutional investors, funding rounds, or M&A activity, suggesting founder/owner-controlled ownership. Listed contacts include a Customer Service Manager, Quality Manager, and two Customer Service Representatives, indicating a lean operational team.

Name

MK Magnetics

Legal name

MK Magnetics, Inc.

Website

https://mkmagnetics.com

Company type

Private

Founded year

2003

Operating status

Operating

Short description

MK Magnetics is a US-based custom manufacturer of tape wound soft magnetic cores serving aerospace, defense, medical imaging, renewable energy, and EV charging customers with proprietary low-loss and high-permeability products made entirely in-house in Adelanto, California.

Ownership category

akta.pro rank

Product category

Soft Magnetic Cores and Components

SIC

Electronic Coils, Transformers & Other Inductors (3677)

akta.pro primary industry

Transformers & Magnetics (Power/Signal) (HDAHANAD)

akta.pro secondary industry

Inductors & Coils (Power/RF/Chokes) (HDAHANAC)

Keywords

• Tape wound magnetic cores
• Soft magnetic cores
• Amorphous nanocrystalline cores
• Custom magnetic components
• Magnetic core manufacturing

Headquarters

HQ city

Adelanto

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Magnetic Core Products Sales: MK Magnetics generates revenue through the sale of custom and standard tape wound soft magnetic cores manufactured from various materials including nanocrystalline, amorphous, silicon steel, nickel alloys, and cobalt alloys. Products are sold directly and through distributors to aerospace, medical, energy, military, and industrial customers.

Go-to-market motion1 record

Distribution channels6 records

Marketing channels4 records

Core offering

MK Magnetics manufactures custom tape wound soft magnetic cores from nanocrystalline, amorphous, silicon steel, nickel, and cobalt alloys in configurations including C-cores, E-cores, toroids, bars, and bespoke shapes ranging from hundredths of a pound to over 4,000 lbs. All cores are produced in-house at a 70,000 sq. ft. Adelanto, California campus with proprietary bonding, annealing, and precision gapping capabilities, and are sold to aerospace, defense, medical imaging, renewable energy, power utilities, EV charging, oil and mineral exploration, and pulsed energy customers via direct quote-based sales and a global distributor network.

Product overview

MK Magnetics, Inc. is a manufacturer and supplier of tape wound soft magnetic cores, offering a comprehensive portfolio of standard and highly customizable products. The core product line includes Tape Wound Soft Magnetic Cores as the foundational offering, supplemented by specialized variants including Amorphous & Nanocrystalline Cores, High Permeability Cores, High Flux Density Cores, and Pulse Charging Cores. Specialty products include Gapped Toroid Filter Cores, Optifficient Ultra-Low Loss Amorphous Cores, Long Nanocrystalline Bars, Energy Harvester Cores, and Advanced Nanocrystalline Cores. Custom manufacturing capabilities support bespoke solutions for renewable energy, medical imaging, aerospace, military, and industrial applications. Products range from less than 1 ounce to 4,000 lbs with materials including nanocrystalline, amorphous, silicon-iron, nickel alloys, and cobalt alloys.

Differentiator

Problem solved

Functional benefit

Brands

• Optifficient: Ultra-low loss amorphous cores brand delivering up to 30%+ lower loss than standard amorphous cores, composed of Metglas 2605SA1 magnetic alloy with optimized annealing and bonding processes.

Products and services

• Tape Wound Soft Magnetic Cores Tape wound soft magnetic cores manufactured from nanocrystalline, amorphous, silicon steel, nickel alloys, and cobalt alloys in C-core, E-core, toroid, bar, and custom shapes. Weights range from hundredths of a pound to 4,000+ lbs with sizes up to 7.5 feet tall, built for aerospace, defense, medical, energy, and industrial applications.
• Amorphous & Nanocrystalline Cores Tape wound cores made from metallic-glass materials offering high permeability, low power loss, and high saturation. Nanocrystalline cores deliver superior permeability with a crystalline structure; amorphous cores provide high resistivity and low loss at high frequencies for power conversion applications.
• High Permeability Cores Advanced magnetic core solutions utilizing amorphous metals (Metglas 2605HB1M), nanocrystalline alloys (FINEMET), and cobalt-based amorphous materials offering permeability from 500 to 100,000, high saturation induction near 1.2T, and excellent temperature stability.
• High Flux Density Cores Advanced cores engineered from grain-oriented silicon steel, cobalt iron, amorphous, and nanocrystalline alloys with high saturation flux density (up to 2.35T for cobalt) for power electronic transformers, high-frequency inductors, EV chargers, and pulse power devices.
• Pulse Charging Cores Magnetic cores designed for high-energy pulse applications including MRI, CT machines, radar, directed energy systems, particle accelerators, and fusion research. Available in nanocrystalline and amorphous materials with tacked, epoxied, or stacked configurations.
• Gapped Toroid Filter Cores Precision gapped toroid filter cores for aerospace, commercial, and military use with tightly controlled air-gapping in single, half, quad, and eight-cut configurations. Available bare, epoxy coated, or with nylon or aluminum cases.
• Optifficient Ultra-Low Loss Amorphous Cores Ultra-low loss amorphous cores composed of Metglas 2605SA1 magnetic alloy with optimized annealing and bonding processes, delivering up to 30%+ lower loss than standard amorphous cores depending on frequency and flux density.
• Long Nanocrystalline Bars Long nanocrystalline bars with cross sections from .125 x .125 to 2 x 2+ inches and lengths up to 84+ inches. Specialized manufacturing processes overcome the fragile nature of long narrow bars while maintaining high permeability properties.
• Custom Pulse Cores Custom pulse cores for medical imaging, radar systems, particle accelerators, military/defense, telecommunications, lithography, lasers, klystrons, satellite communications, and high energy pulse power applications. Engineered with specialized annealing and bonding techniques.
• Custom Magnetic Products for Renewable Energy Custom magnetic cores for renewable energy applications including solar, wind, power generation, and transportation. Features thermally stable multiple-cut amorphous and nanocrystalline cores, stacked and bonded assemblies from small planar cores to cores weighing up to 4,000 lbs.
• Energy Harvester Cores Inductively powered coupling devices for smart grid energy harvesting enabling collection and transfer of energy under low line current conditions. Available in silicon steel for cost-sensitive applications or high nickel and nanocrystalline materials for high-performance designs.
• Advanced Nanocrystalline Cores High-frequency nanocrystalline cores utilizing Finemet FT-3W DFARS-compliant material available in widths up to 5.6 inches. Suitable for C, E, Toroid, and bar configurations with sizes up to 84 inches and multiple cut options.

Quantifiable outcome

• Up to 30% lower core loss than standard amorphous cores with Optifficient product line
• +3 more outcomes

Segments10 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Five partnerships are on record, tiered core.

• PPM (Pulse & Power & Measurement LTD)coreChannel Partner/ Reseller/ DistributorUK distributor for MK Magnetics products covering United Kingdom region. Located at 65 Shrivenham Hundred Business Park, Watchfield, Swindon, Wiltshire SN6 8TY UK. Provides local sales, support, and distribution services.
• Pulse MC2coreChannel Partner/ Reseller/ DistributorEuropean distributor covering France, Italy, and Spain. Located at Z.I. de la Petite Montagne Sud, 3 rue de l'Aubrac, 91017 EVRY Cedex, France. Provides regional sales and distribution.
• HVP High Voltage Products GMBHcoreChannel Partner/ Reseller/ DistributorCentral and Eastern European distributor covering Germany, Austria, Switzerland, and Central & Eastern Europe. Located at Fraunhoferstrasse 12, 82152 Martinsried, Germany.
• AET, InccoreChannel Partner/ Reseller/ DistributorJapan distributor covering Japanese market. Dr. Eiji Tanabe, Ph.D. serves as President. Located at 2-7-6 Kurigi, Asaoku, Kawasaki-city, Kanagawa, Japan. Business hours Monday-Friday 9:00-18:00 Japan Time.
• Diligent Sales, LLCcoreChannel Partner/ Reseller/ DistributorManufacturer representative covering Eastern Seaboard, Pennsylvania, and Ohio regions. Located at 27 Woodvale Ave., Kings Park, NY 11754. Bill serves as primary contact.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Magnetics Inc. US-based manufacturer of tape wound cores, C-cores, E-cores, toroids, and custom electromagnetic components using silicon steel, nickel-iron, and amorphous materials. Direct head-to-head competitor serving industrial, aerospace, and electronics customers with a similar custom-engineering model.
• Fair-Rite Products Corp. US manufacturer of ferrite cores, toroids, and soft magnetic components for power, EMI suppression, and signal conditioning applications. Adjacent direct peer in the broader magnetic components category with overlapping customer base in power electronics and industrial markets.
• Amobé Sarl: French manufacturer specializing in tape wound magnetic cores and chokes for power electronics, EV, renewable energy, and industrial applications. Direct competitor with overlapping amorphous/nanocrystalline and silicon steel core portfolio.
• Thomas & Skinner Inc. US manufacturer of soft magnetic tape wound cores, transformer laminations, and specialty magnetic materials serving aerospace, defense, and industrial customers. Direct competitor with similar product form factors and a long-established US manufacturing history.
• Magnetic Metals Corporation: US-based manufacturer of tape wound cores, C-cores, and laminations in silicon steel and nickel-iron alloys serving aerospace, defense, and power conversion. Direct competitor with similar custom small-batch capabilities and US manufacturing footprint.
• Vacuumschmelze (VAC): German-headquartered global leader in soft magnetic materials and tape wound cores (Vitroperm nanocrystalline, VacuFlux) used in power conversion, EV, medical, and industrial applications. Direct competitor with broader product breadth and global manufacturing footprint.
• Stangenes Industries Inc. US manufacturer of custom magnetic components including tape wound cores, pulsed-power magnetics, and linear accelerator magnets. Already named as a strategic partner on MK Magnetics' own website, indicating closely overlapping products and customer set in pulsed-power and accelerator applications.
• Magnetec GmbH: German manufacturer of nanocrystalline and amorphous tape wound cores (NATRO™, FLEX-PERM®) for EMC filtering, current sensing, and power conversion. Direct competitor in the high-performance amorphous/nanocrystalline segment that overlaps with MK Magnetics' Optifficient product line.

Broad incumbents

• Metglas (Hitachi Metals / Proterial): Manufacturer of amorphous metallic ribbon (Metglas 2605 series used by MK Magnetics' Optifficient line) and finished tape wound cores. Functions both as a key upstream material supplier to MK Magnetics and as a broad incumbent competitor with deeper R&D and capital resources.
• Hitachi Metals / Proterial Ltd. Japanese global materials conglomerate producing electrical steel, amorphous ribbon, and soft magnetic cores for automotive, rail, industrial, and energy applications. Broader incumbent with vertically integrated materials-to-cores capabilities that operate at a scale specialty manufacturers cannot match.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance11 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 MK Magnetics