The magnetic alloy, “alnico,” is an acronym of aluminum, nickel and cobalt, the three main elements in this mid-grade permanent magnet. Some characteristics of alnico are that it is hard, brittle, has a low coercive force, excellent temperature stability, high residual induction and fairly high energies. Read More…
Leading Manufacturers
Master Magnetics, Inc./The Magnet Source™
Castle Rock, CO | 800-525-3536WE are the magnets experts. Since 1976, we have provided our customers with everything they need in the realm of magnets. We are a full service provider, and we offer a huge inventory of products, high quality materials, and cost-effective shipping. You will always find what you need in our 15 million magnet selection. Contact us today to learn more!
International MagnaProducts, Inc.
Valparaiso, IN | 219-465-1998Our customers know they can trust us to provide them with the best magnets in the industry. We supply magnets from only the best manufacturers in the world. We will not offer substandard products or anything that is not the most cost-effective solution. Our goal is to provide the perfect product to our customers for less! Find out more on our website today!
Arnold Magnetic Technologies
Rochester, NY | 800-593-9127Founded in 1895, Arnold Magnetic Technologies is a leading global manufacturer of high performance permanent magnets, electromagnetics, magnetic assemblies, and precision thin metals. Arnold’s magnets, metals, and systems are used in high-efficiency electric motors and generators, sensors, batteries, and more. A US-based corporation with several ITAR locations complying with DFAR throughout their supply chain, and certified to SAE AS9100D and ISO9001:2015.
Alliance LLC
Valparaiso, IN | 219-548-3799Alliance LLC is one of North America’s largest suppliers of magnetic materials. Our wide range of magnetic materials, along with a state of the art technical center, means you are in good hands! Your success is our priority, and we are not satisfied until you are. Learn more by visiting our website, or give us a call to discuss your magnet requirements. Call or email us today.
Magnum Magnetics Corporation
Marietta, OH | 800-258-0991Magnum Magnetics® is the largest U.S. manufacturer of flexible magnetic sheeting, rolls, strip, and custom profiles. Our products include printable magnetic sheeting for multiple printing presses including offset, flexo, inkjet, and digital. We will take the time to understand your application before recommending a magnetic solution. We offer industry-leading delivery times with world-class, U.S.-based customer service.
Integrated Magnetics
Culver City, CA | 800-421-6692With over 60 years of technical magnet expertise, Integrated Magnetics produces custom engineered precision magnetic assemblies including Halbach arrays, high-speed rotors, motors, actuators, high-field magnetic yokes, magnetron components and more. We are a US based company, ISO 9001:2015 certified, RoHS and ITAR compliant. Visit our website to learn more.
Shields Company Magnetics
Scottsdale, AZ | 800-799-4408A subsidiary of Shields Company, Shields Company Magnetics is a leading sweeping magnets manufacturer and distributor of industrial magnets. Our wide variety of magnet products including rare earth magnets and permanent magnets are used in debris removal, lifting, separating and sweeping. Such applications are for warehouse distribution centers, airports, trucking terminals and construction sites.
Alnico Bar Magnet - Adams Magnetic Products Co.Alnico magnets, in addition to their composition of aluminum, nickel and cobalt, can also be alloyed with iron, copper and often titanium in order to create a magnet with a stronger magnetic force than all other permanent magnets (with the exception of the rare earth elements of neodymium and samarium-cobalt).
More cost-effective than high-strength rare earth magnets and having higher magnetic force and permanence than ceramic magnets, alnico magnets are the perfect fit for a wide range of applications. For instance, cow magnets are made exclusively from alnico, and alnico magnets are also used in sound amplification, electric motors, sensors and many sorting and lifting tools.
In addition to these applications, alnico magnets are utilized in industries including instrumentation, research and music for electric guitar pickups, loudspeakers, traveling wave tubes and many others.
Alnico Magnet - Adams Magnetic Products Co.Alnico magnets are similar to ferrite ceramic magnets but are less brittle, more easily fabricated into shapes, and have higher magnetic resistance. Being a metallic magnet rather than ceramic, they do not need always to be nickel-coated for structural applications like ceramic magnets do.
Additionally, alnico magnets have medium-high magnetic force but relatively unstable magnetic permanence under corrosion or vibration, making them unsuitable for motor, water treatment and sound speaker applications. There are two main methods by which alnico magnets are fabricated: casting and sintering processes.
The casting process entails heating up the alnico until it achieves a molten state, and then pouring the molten alnico into a mold. Once in the mold, the alnico is further processed by means of varied heat treating cycles. Cast alnico magnets offer the advantage of working extremely well in terms of magnetic capability, but suffer in terms of mechanical properties as they are often characterized by casting voids and hairlines cracks in the alnico.
The sintering process, on the other hand, involves the manufacturing of solid parts, such as various stock magnet shapes like rods, bars, channels and horseshoes, from powdered materials that are heated to just below the melting point in order to cause particulate adhesion.