Magnet Materials Overview

Integrated Magnetics stocks and supplies standard and premium grades of all commercially available permanent magnet materials. We specialize in building and manufacturing custom magnets, magnetic assemblies, and custom engineered electrical machines to meet our customers’ exact specifications.

Neodymium Iron Boron Magnets

A class of rare earth material, neodymium magnets are available in both sintered and bonded forms,
as well as custom configurations.

Major Characteristics

• Most powerful (highest energy product) class of magnet material commercially available.
• High Br, relatively high Hc, high BHmax.
• Lower cost than samarium cobalt.
• Temperature sensitive.
• Susceptible to oxidation.
• With careful design, some grades will function up at temps up to 200°C (392°F.
• Energy product ranges from 10 MGOe to 53 MGOe
• Relative cost Index (by weight): 40

Learn more about our standard and custom neodymium magnets. A large inventory of neodymium magnets is available for purchase at MagnetShop.com.

Samarium Cobalt Magnets

A class of rare earth material, samarium cobalt magnets are available in both sintered and bonded forms, as well as custom configurations.

Major Characteristics

• High Br, high Hc, relatively high BHmax
• Higher in cost than neodymium iron boron
• Highly resistant to oxidation
• Most grades function well at temps up to 300°C (572°F)
• Energy product ranges from 18 MGOe to about 33 MGOe
• Relative cost index (by weight): 60

Learn more about our standard and custom samarium cobalt magnets. A large inventory of SmCo magnets is available for purchase at MagnetShop.com.

Alnico Magnets

An alloy composed of aluminum, nickel, and cobalt, alnico magnets have been popular since the 1930s. Alnico magnets are available in cast and sintered forms, as well as in custom configurations.

Major Characteristics

• High Br, low Hc, BHmax in the 5 MGOe range
• Most temperature stable of all magnet types
• Functional with no significant performance loss in temps up to 500°C (932°F).
• Relatively easily demagnetized by opposing magnetic fields
• Excellent oxidation resistance
• Energy product ranges from 1.4 MGOe to 7.5 MGOe.
• Relative cost index (by weight): 25

Learn more about our standard and custom alnico magnets. A large inventory of alnico magnets is available for purchase at MagnetShop.com.

Ceramic Magnets (Ferrite Magnets)

Composed of barium or strontium ferrite, these permanent magnets exhibit good resistance to demagnetization, and are the lowest cost materials available today. Sintered ceramic (ferrite) magnets are hard, brittle, and used extensively in consumer products. Ceramic (ferrite) magnets are commonly used as refrigerator magnets.

Major Characteristics

• Energy product ranges from 1.1 MGOe to 4.5 MGOe
• Relative cost index (by weight): 1.5

Learn more about our standard and custom ceramic magnets. A large inventory of ceramic magnets is available for purchase at MagnetShop.com.

Flexible Magnets

A special form of ferrite or rare-earth materials. Flexible magnet materials are manufactured by binding ferrite or rare earth magnet powders in a variety of carriers, such as vinyl. This material can be bent, twisted, coiled, and otherwise easily fabricated.

Major Characteristics

• A variety of grades are available, from 0.6 MGOe, to about 1.6 MGOe in ferrite magnet materials, and up to about 6 MGOe in rare earth magnet materials.
• Relative cost index (by weight, for bonded ferrite): 1.

Learn more about our standard and custom flexible magnets. A large inventory of flexible magnets is available for purchase at MagnetShop.com.

Magnet Material Comparisons

Relative Cost by Weight	Relative Cost by BHmax
Difficulty to Machine	Maximum Operating Temperature

Contact Us for High Quality Permanent Magnets & Magnetic Assemblies

With proven manufacturing techniques and high quality materials, Integrated Magnetics can deliver the perfect magnetic products for your unique application. Request a quote or contact us for custom magnets and precision magnetic assemblies.