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Overview• Magnets and magnetic materials are critical to

our nation’s defense

• Weapons systems that use magnetic materials:

Thomas & Skinner is the world leader in high-performance magnets and magnetic materials

used in strategic weapons systems

Fighter Aircraft Nuclear Subs TanksBombs Missiles Satcom

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• Aegis Radar -- used widely by Army and Navy • Valves in nuclear submarines• Hellfire missile guidance systems• Military aircraft, including F-18, F-22, F-35 • Power klystrons– ground-based earth-to-satellite communications

amplifiers (KPA’s) and troposcatter communication terminals

• Minuteman IV ICBM

Strategic DefenseApplications: Magnetics

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Magnetics Crib SheetHard Magnets vs Soft Magnetic Materials

Hard (Permanent) Magnets• Magnetic field WITHOUT

an electric current• Three general types:– Alnico

– Rare Earth• SmCo

• NdFeB

– Hard Ferrites

Soft Magnetic Materials• Magnetic field ONLY

with an electric current• Multiple types,

including: – Electrical steel

– Soft Ferrites

– Powdered iron

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19011901 Company founded by John Esterline, EE professor at Purdue University

19231923 James Thomas & O.H. Skinner acquired magnetics division

Thomas & Skinner, Inc.

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TodayToday Employee-owned manufacturer ofmagnetic materials headquartered in Indianapolis, Indiana.

Markets:

Thomas & Skinner, Inc.

Aerospace Industrial Defense Oil Exploration Medical

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Goal:• Provide the highest quality, domestically- produced custom magnetic components– Stay close to customer base– Maintain technological advantage– Avoid low-technology, low-price segments• low-quality and/or high-volume applications

Strategy:Compete with anyone in the world for high- quality, high-performance magnetics, bar none

Thomas & Skinner, Inc.

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Products:

• Alnico magnets• Transformer laminations

Employees:

• Indianapolis, IN -- 136• Osgood, IN -- 17

Exports to:Canada China Italy Poland

Mexico Malaysia Germany Netherlands

Japan Israel France Great Britain

Thomas & Skinner, Inc.

• Soft ferrites

• Fairfield, NJ -- 68

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• Hard (permanent) magnet– Known for stability and operating temp. range• Max operating temp: 550° C (1000° F)

• Base materials:

–Aluminum

–Nickel

–Cobalt

– balance of Iron

• Cast and Sintered in Indianapolis

Alnico

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• Soft (non-permanent) magnetic material – Regulates the voltage in electrical devices • Wrapped with copper wire• Creates a magnetic field

• Base material: electrical steel (3.25% silicon)– US Mills: • AK Steel• Allegheny Ludlum

• Products stamped in Indianapolis

Transformer Laminations

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• Soft (non-permanent) magnetic material – Regulates voltage in electrical devices • Wrapped with copper wire• Creates a magnetic field

– Antennas

– Sensors

• Base material: MnZn and NiZn (ceramics)

• Powder production and machining– New Jersey

Soft Ferrites

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