Samarium Cobalt Magnets (SmCo) Rare Earth Magnets
Samarium Cobalt (Rare Earth) Magnets are often used in high temperature applications needing high magnetic performance and where magnetic stability over a wide range of temperatures is important. Magnosphere can help optimize performance and cost with SmCo magnets in grades from 16 to 32 MGOe and temperatures up to 350°C/662°F. Samarium–Cobalt Magnet is a strong permanent rare earth magnet made of an alloy of samarium, cobalt, Fe, Cu, Pr and Zr.
Samarium Colbalt Magnets / SmCo Magnets
Sintered samarium cobalt (SmCo) magnets, available since the early 1970, offer the designer a tremendous combination of extremely high magnetic properties, outstanding thermal stability and excellent corrosion resistance. These characteristics make SmCo the ideal material in applications such as servo-motors, pump couplings, and sensors, particularly where the magnet is required to operate at high temperatures, across a broad temperature range or in a corrosive environment.
Samarium Cobalt rare earth magnets are often used in high temperature applications needing high magnetic performance and where magnetic stability over a wide range of temperatures is important. Dura can help optimize performance and cost with SmCo magnets in grades from 16 to 32 MGOe and temperatures up to 350°C/662°F. Stock Samarium Cobalt magnets also available to reduce development and production lead times.
SmCo Magnets / Samarium-Cobalt (SmCo) Rare Earth Magnets
Samarium Cobalt rare earth magnets are often used in high temperature applications needing high magnetic performance and where magnetic stability over a wide range of temperatures is important. Magnosphere can help optimize performance and cost with SmCo magnets in grades from 16 to 32 MGOe and temperatures up to 350°C/662°F. Stock Samarium Cobalt magnets also available to reduce development and production lead times.
Available Grades of Samarium Cobalt Magnets:
Many grades of Samarium Cobalt exist to support a variety of industrial and commercial applications. The range of Samarium Cobalt Magnet grades is typically 16 to 32 MGOe. These ranges allow for balancing cost, magnetic performance, and operational temperature resistance.
Many grades of Samarium Cobalt magnets exist to support a variety of industrial applications. The range of SmCo magnet grades typically extends from 16 MGOe to 32 MGOe. This range allows for optimizing cost, performance, and operational temperature resistance.
There are two main types of Samarium Cobalt magnet alloy. The older version, typically denoted as (1-5) having one Samarium atom per 5 Cobalt atoms, and the newer Samarium Cobalt magnet alloy, typically denoted as (2-17), having an atomic ratio of two Samarium atoms to 14 – 17 Cobalt atoms. (The 14 – 17 atoms are actually comprised of a mix of transition metals, Cobalt, Copper, and Iron, where Cobalt is the most abundant.)
SmCo Rare Earth magnets are very resistant to corrosion and do not normally require any surface treatment.
Samarium Cobalt magnets exhibit good corrosion resistance when compared to Neo magnets. For most applications a coating or plating is not required, but it should be considered when operating in environments that are acidic, have high moisture, or are in a vacuum.
Coatings and metal platings can be applied to increase the ability to clean the magnet. A metal plating will allow for greater cleanliness for vacuum and medical applications. Nickel plating can be applied to facilitate soldering the magnet, and this is especially used for adhesion to a printed circuit board.
Low environmental reactivity makes Samarium Cobalt magnets good candidates for Medical and Aerospace applications. It is always advisable to empirically evaluate the magnet alloy in the operational environment before deciding on a design path. Typically, Samarium Cobalt magnets used in Medical applications will be parylene coating in addition to being clad in an application appropriate material.
Samarium Cobalt Magnets can operate at temperatures up to 500F (260C), making these rare earth magnets ideal for high heat applications.
Sintered Samarium Cobalt rare earth magnets are extremely resistant to demagnetization and can operate at temperatures up to 500F (260C). There are many Samarium Cobalt grades which can withstand higher temperatures, but several factors will dictate the overall performance of the Samarium Cobalt rare earth magnet. One of the most pertinent variables is the geometry of the magnet or magnetic circuit. Samarium Cobalt magnets, which are relatively thin compared to their pole cross-section (Magnetic Length / Pole Area), will demagnetize easier than Samarium Cobalt magnets which are thick. Magnetic geometries utilizing backing plates, yokes, or return path structures will respond better to increased temperatures. The maximum recommended operating temperatures listed on the Samarium Cobalt magnetic characteristics page do not take into account all geometry conditions. Please contact a Magnosphere team member for Samarium Cobalt rare earth magnet design assistance when elevated temperatures are involved in your application.
Although most commercial magnets are anistropic, which means they have a preferred direction of magnetization, various pole configurations can be achieved without conflicting with a Samarium Cobalt Magnet’s orientation.
Most useful commercial magnets are anisotropic which means that they have an “Easy” or preferred direction of magnetization and that an orientation field was applied during the compaction stage of the manufacturing process.
It is essentially impossible to magnetize the resulting anisotropic magnet alloy other than in the Direction of Orientation; however, various pole configurations can be achieved without conflicting with the magnet material’s orientation.
Compliance and Intellectual Property Considerations:
Samarium Cobalt magnets manufactured by Magnosphere are compliant with Intellectual Property Rights, Environmental Restrictions, and Conflict Mineral usage.
- DFARS Compliant
- RoHS, RoHS II and REACH
- Dodd Frank Wall Street Reform Act (Section 1502)
Magnosphere stocks the most relevant magnet alloys which are applicable to DFARS. Magnosphere can design, fabricate, and provide finished magnets compliant with DFARS. The relevant magnet alloys are generally Alnico and Samarium Cobalt (SmCo).
The DFARS clauses listed above specify what is considered a “Specialty Metal” and how it can legally be procured and supplied for pertinent government contracts. More specifically to Department of Defense (DOD) article acquisitions.
The clauses also describe what is considered a “Specialty Metal” and how it may be incorporated into a down- stream product. Several magnetic alloys fall under the classification of a “Specialty Metal.” The most commercially relevant are Samarium Cobalt (SmCo) and Aluminum Nickel Cobalt (AlNiCo), but lesser used alloys can also fall under the Specialty Metals clauses. The best way to mitigate risk is to ascertain if the magnet alloy contains Nickel or Cobalt and determine if the concentrations of these metals are sufficient to classify the magnet alloy as a Specialty Metal.
Handling and Storage of Samarium Cobalt Magnets:
SmCo Magnets are very strong and brittle, requiring appropriate handling and packing to ensure safety and prevent damage.
Samarium Cobalt Magnets are very strong and brittle, and appropriate handling and packing is required. Most receiving departments are not familiar with the strength of Samarium Cobalt magnets and this can result in injury or broken parts. All personnel that may come in contact with this alloy should be made aware of the dangers of handling these magnets. The brittle nature of the alloy can lead to flying chips if the magnets are allowed to impact each other or a solid surface. Larger magnets can become a pinching hazard if caution is not exercised. We urge all customers to discuss handling techniques pertinent to their magnets with a Magnosphere team member.
Samarium Cobalt Magnet Manufacturing Methods:
Samarium Cobalt Magnets are typically manufactured by a powdered metallurgical process utilizing rigid steel or rubber molds.
Fully dense Samarium Cobalt rare earth magnets are usually manufactured by a powdered metallurgical process. Micron size Samarium Cobalt powder is produced and then compacted in a rigid steel mold. The steel molds produce shapes similar to the final product, but the mechanical properties of the alloy usually inhibit complex features at this stage of the manufacturing process.
The Samarium Cobalt’s magnetic performance is optimized by applying a magnetic field during the pressing operation. This applied field imparts a preferred direction of magnetization, or orientation, to the Samarium Cobalt magnet alloy. The alignment of particles results in an anisotropic alloy and vastly improves the residual induction (Br) and other magnetic characteristics of the finished magnet.
After pressing, the Samarium Cobalt magnets are sintered and heat treated until they reach their fully dense condition. The rare earth magnet alloy is then machined to the final dimensional requirements and cleaned.
Buy Neodymium Magnets online
Neodymium Iron Boron (“Neo”, NdFeB or Neodymium) Magnets are made from an alloy containing, amongst others, the elements Neodymium, Iron and Boron (NdFeB). The NdFeB magnets are the strongest type of magnet commercially available and are manufactured in a wide range of shapes, sizes and grades. We offer 53 grades of licensed standard corrosion resistance Neodymium Iron Boron and now an additional 72 grades of improved corrosion resistance Neodymium Iron Boron, each type with 30 types of coating finish for each grade (125 grades in total with 34 finishes – 4250 combinations).
The NdFeB magnets are anisotropic sintered magnets – the alloy is jet milled to a fine powder and is then compacted in the presence of a magnetic field to give it a preferred direction of magnetisation. The NdFeB magnets are then sintered to fuse the powder together before final machining and magnetising produces the completed super strength Neodymium magnet.
The Neodymium magnets are also known as Neo magnets, Neodymium Iron Boron magnets, Neodymium-Iron-Boron magnets, Neodymium Magnets, NdBFe magnets, NdFeB magnets, NIB magnets, Super Strength magnets and Rare Earth magnets (please note that SmCo is also called a Rare Earth magnet). NdFeB is called a Rare Earth magnet because the Neodymium is a Rare Earth element, having a value of 60 on the Periodic Table. For note, there is nothing rare about Rare Earth magnets – the required elements are readily available and the NdFeB magnets are produced in several hundreds of tonnes each year.
The Neodymium Iron Boron magnets (NdFeB magnets) were developed just over 25 years ago and were first commercially available in 1984. Neodymium magnets were initially developed for voice coil motors in computer hard disk drives and this market still accounts for over 50 percent of all Neodymium magnets produced. Other applications include high performance motors, brushless DC motors, generators, magnetic separation, magnetic resonance imaging, sensors and loudspeakers. They are becoming increasingly popular across a wide range of novelty products such as fridge magnets and all kinds of magnetically attachable gadgets for retail markets.
The NdFeB (NIB) magnets, in disc and ring forms, are usually axially magnetised (the round ends are the magnet poles). Diametrically magnetised discs and rings can be produced upon request (looking at the circular end face, the magnetism runs from the 12 o’clock position to the 6 o’clock position in diametrically magnetised magnets). Likewise, the rectangular blocks can be specially produced to be magnetised in any of the three axes (the magnets cannot be re-magnetised in another axis due to the method of production – the sintered NdFeB is anisotropic). Arcs, trapezoids and other shapes can generally also be produced. Bespoke Directions of Magnetisation within the magnet shape may also be possible (subject to confirmation) e.g. for Halbach Array assemblies.
If you require a bespoke/custom Neodymium Iron Boron (NdFeB, NIB, Neodymium, Neo) magnet or magnetic assembly, Technical Support or our NdFeB Technical Data Sheet, please contact us. And please feel free to browse our NdFeB-Info web site (logo link to the bottom left of this page) for addistional technical information on Neodymium Magnets.
Neodymium magnets are among the most powerful magnets available on the market. Neodymium magnets are made from an alloy of neodymium, iron and boron. They’re what’s known as a as ‘super magnets’ or rare-earth magnet. We offer wide range of neodymium magnets, starting from 0.05kg pull up to a 600kg pull neodymium recovery magnet. Super Strong Neodymium Magnet is one of the world’s strongest and most powerful rare earth magnets. We manufacture every piece in state of the art ISO certified Magnet manufacturing facilities to ensure maximum quality.
PURCHASE NOW AT MAGNOSPHERE - Neodymium Magnets - buy strong rare earth (Neo or NdFeb) Magnets!
- Oriented Through Thickness
- Axially Oriented
- Oriented Through Diameter
- Axially Osiented In Segments
- Diametrical Oriented
- Redically Oriented
Our Neodymium magnets are available in a range of shapes and sizes, offering a superior pull performance to other materials with the same volume, thanks to their NdFeB properties. Explore our wide range of super-strong Neodymium magnets.
Magnosphere Magnets Neodymium rare earth magnets are stronger than the strongest ceramic magnets! Each magnet packs a huge magnetic energy punch and will last forever under normal use. Unlike most other types of magnets, Magnosphere Magnets Neodymium is highly resistant to demagnetization and will not lose their magnetization around other magnets.
Magnosphere Magnets is able to offer you the high quality Neodymium magnets with consistent performance. This Super Strong Neodymium Magnet is extremely powerful and built to last. It’s designed & manufactured under stringent, top quality standards using the latest technology to ensure you receive the best Neodymium Magnet every time.
As the leading manufacturer of Neodymium magnets, Magnosphere Magnets is able to offer you the highest quality Neodymium magnets with consistent performance at the lowest price.
- The Magnosphere Magnet - Super Strong Neodymium Magnet is one of the world’s strongest and most powerful rare earth magnets. We manufacture every piece in state of the art ISO certified Magnet manufacturing facilities to ensure maximum quality.
- STRONG - Neodymium Rare Earth Permanent Magnet
- POWERFUL - Magnosphere Magnets Rare Earth Neodymium Magnets have an extra strong pull force and are triple layer coated (nickel-copper-nickel) for maximum durability and protection against corrosion.
- USEFUL – Use your rare earth magnet for just about anything, including finding studs in your wall, fastening, lifting, hanging objects, various projects & presentations, education, & more. NASA even uses them on Mars Exploration Rovers!
- Most NEO Magnets are magnetized axially through the thickness with poles on the long flat surfaces.
- Triple layer coated (nickel-copper-nickel) for maximum durability and protection against corrosion.
- Manufactured in state of the art ISO certified Magnet manufacturing facilities to ensure maximum quality.
- Useful for just about anything including fastening, holding, hanging objects, finding studs in walls, and more.
- Made from Neodymium, Iron, Boron and other minor elements.
- Resistant to demagnetization.
- WARNING: Fingers could be severely pinched between two or more magnets.
- KEEP OUT OF REACH OF ALL CHILDREN. THIS IS NOT A TOY. DO NOT ingest or inhale.
- DO NOT place in nose, mouth or any other part of the body. Neodymium Magnets are BRITTLE.
- They can SHATTER, CRACK, PEEL or SPLINTER if allowed to snap together or slam into a metal object.
- Broken magnets can be Extremely SHARP. MAGNETIC MEDIA AND ELECTRONIC EQUIPMENT HAZARD.
- KEEP AWAY from PACEMAKERS Do Not cut or drill Neodymium Magnets, there is a both a fire and fracture hazard and the dust is toxic.
How to Safely Seperate Your Magnosphere Magnets?
- Slide one magnet off the top of the stack.
- Once off thestack,carefully start lifting the magnet.
- Lift the magnet to free it from the stack.
- DO NOT attempt to pull, lift, or pry amagnet from the stack before sliding it to the side.
- DO NOT throw away the white storage spacers.
- DO NOT allow the magnets to snap to each other or any magnetic surface. doing so may cause magnets to break!
Neodymium Iron Boron (NdFeB) magnets are a type of rare earth alloy with typical atomic structure of Nd2Fe14B which stands for 2 atoms of Neodymium, 14 atoms of Iron(Fe) and one atom of Boron. The sintered Neodymium Iron Boron magnet has higher magnetic properties compare to Samarium Cobalt magnets, however it is more easily oxidized and generally does not have the same temperature resistance. The highest energy products for Neodymium Iron Boron could reach 52 MGOe commercially or more.
Magnosphere is a manufacturer of standard and custom rare earth magnets for the OEM industry. Materials used include sintered and bonded neodymium iron boron, samarium cobalt, aluminum nickel cobalt, ferrite (ceramic), and rubber. Available in various shapes and forms, including discs, rods, plates, cubes, rings, tubes, and spheres. Various magnetization options available. Applications include retail fixtures, motors, sensors, and many more. Magnets for whiteboards, glass boards, and mounts are also available. Capabilities include plating, coating, magnetization, design, simulation, 3D printing or prototyping, plastic injection molding and production. Services include assembly, testing magnetic materials BH curves, coating, plating, engineering design, magnetizing, marking, identification, stabilization, calibration, testing & certification. Markets served include aerospace/defense, medical, industrial, research labs, semi-conductor & telecommunications. JIT delivery!
Neodymium magnets can be fabricated into many shapes and types:
When buying magnets, be sure to read our safety instructions before using the magnets to avoid injury. A powerful neodymium magnet is not a toy!
What are Rare Earth Magnets?
Rare earth magnets, also known as neodymium magnets or samarium cobalt magnets are magnets made from alloys of rare earth elements. They are currently the strongest type of permanent magnets made, and produce significantly stronger magnetic fields than other types such as ceramic or alnico magnets. Rare earth magnets have replaced alnico and ferrite magnets in many applications, including head actuators for computer hard disks, magnetic resonance imaging (MRI),loudspeakers and headphones, several types of motors, and more.
Neodymium (Rare Earth) Magnets: the strongest magnets in the world
Magnosphere offers best priced Neodymium magnets globally. Please inquire for custom Neodymium magnets or magnetic assembly. Neodymium is the strongest available magnet alloy at up to 52MGOe. The use of Neodymium results in smaller, more cost-effective magnet solutions replacing older materials like Alnico and Ceramic in many applications. Magnosphere.can help optimize performance and cost with Neo magnets in grades from 33 to 52MGOe and operating temperatures up to 230°C/446°F. (NdFeB) Neodymium, a rare earth magnet, is made up of Neodymium Iron and Boron and is moderate in price. A neodymium iron boron magnet is usually plated or coated (Examples: Nickel Plated, Epoxy Coated, Parylene Coated). Neodymium permanent magnets usually offer the best value when comparing price and performance. Stock Neodymium magnets are available in large quantities and dimensions.
Rare Earth Neodymium NdFeB
We provide a range of high magnetic strength Rare Earth Neodymium magnets including Disc magnets, Deep Pot magnets, Shallow Pot Neodymium and Round flat neodymium magnets,
- Neodymium NdFeB magnets are, size for size, the strongest type of any magnet material that is commercially available.
- Neodymium NdFeB magnets are often the ideal first choice for many applications because they offer a maximum performance from the smallest magnet volume.
- Neodymium NdFeB should always be coated to guard against the risk of corrosion – NiCuNi, Zinc, NiCuEpoxy and Gold are popular finishes.
Our Magnet-Shop carries a great variety of these powerful magnets to fit many different applications and they are in stock for immediate delivery!
Neodymium NdFeB magnets and their application!
At Magnosphere.co.uk, we sell custom Neodymium NdFeB magnets and custom magnetic assemblies so we can help you find the best fit for your project. Some of the common applications of the rare earth magnets are:
- Motors and Generators
- Automotive (clamps, sensors)
- Separation (rods, grids, etc) – 10-12kG (22-26lbs) systems
- High performance magnetic clamps and pot magnets
- They are used in computer hard drives.
- Rare earth magnets also find their utility in high-end speakers.
Based on the applications and properties earth magnets are of two types:
- Neodymium Magnet
- Samarium-Cobalt Magnet
Process of Making Rare Earth Magnets
- The rare earth magnets are made by using different process involving various stages. The popular stages of the production of rare earth magnets are:
- The first stage is the manufacture of rare earth element alloys.
- The metal alloy is then finely powdered.
- The next step involved is pressing of powder either isostatically or pressing through die process.
- The particles so pressed are oriented.
- Sintering of the element is done accordingly.
- The shapes are then sliced into desired shapes and sizes.
- The coating is done thereafter.
Purchase Now: Neodymium Magnets online
Spplier of Rare Earth Magnet, neodymium magnets and permanent magnets
Our magnetic product assortment includes: disc magnets, ring magnets, magnetic spheres, block magnets, pot magnets, clamping magnets, car roof magnets, ceiling magnets, switching magnets, lifting magnets, flexible rubber magnets, sheet magnets, tape magnets, steel tape, notice boards, notice board magnets, magnetic paper, fridge magnets, business card conversions, magnetic sweepers, magnetic separation rod magnets, separator grids, compasses, gaussmeters, magnetic viewing film, iron filings, experiment kits, generator magnets, reed switch magnets, educational magnets.
Wholesale prices: Click here to request quote
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Buy Samarium Cobalt Magnets at Magnosphere and get a better deal!
Magnosphere produces magnets at great prices, produced and delivered on time for all areas of industry, automotive, aerospace, electronics as well as in the design sector, trade fair construction, offices and for the home.
We are an ISO certified shop and carry the Trusted Shops seal. We have successfully completed more than 300,000 orders and offer our ever-growing customer base 24/7 customer service.
All items are available for immediate delivery in large numbers with daily dispatch. Our selection is your win! Thousands of satisfied customers! Buy from a company with the highest quality standards and customer service with flexible and diverse payment options and conditions.
We can also custom manufacture these to fit your exact specifications using our in-house global manufacturing facilities and team of experienced engineers. Need high quantities of magnets at the lowest and fairest price possible? Just let us know what you are looking for and contact our Customer Care Team by sending us a request for quote! We'll work with you to determine the most economical way of providing you with what you need.
Trust in our experience and convince yourself of our service and our products and we look forward to welcoming you to our magnet shop at Magnosphere. You are welcome to contact us by eMail: info(at)magnosphere.co.uk. Available 24/7 x 365 and we are also there for you on public holidays! Or just give us a call.
- Telefax: +49.2241.9594520
- eMail: info(at)magnosphere.co.uk
We are very proud to offer excellent customer service. We know that without our clients, we would not be here.
If you have any questions about your order or something else, please call or email us!: info(at)magnosphere.co.uk
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