Additional info. e. 5, 11. But some compounds of neodymium with transition metals such as iron are ferromagnetic, with Curie temperatures well above room temperature. They are made from inexpensive raw materials and are very economical to produce. * Orders of any size. 5 to 1 Tesla. Each magnet has a grade, which typically denotes its strength. N35 Neodymium Disc Magnet: Superior Strength in a Compact Size. It is a method of measuring a magnet’s max strength & the limit of that magnet’s holding power. 03 inches (0. Strength magnets neodymium safety info. 20. It is also the most commonly used rare earth magnet. The compound also has a high saturation. 24 hours. berkhamsted@buntingmagnetics. Production R&D. The material and grade of a magnet refer to a set of properties that ultimately yield the magnet’s performance. Strong N52 grade neodymium rare earth magnets, available in discs, cylinders, blocks and rings. What makes them so unique? Learn more in our comprehensive guide now. NdFeB Magnets, Neodymium Iron Boron Magnets, Neodymium Magnets NdFeB magnets are also know as Neo, Neodymium Iron Boron, NdBFe, NIB, Super Strength, and Rare Earth Magnets (although SmCo also shares this term). Attributes of Neodymium Material. The magnetic length. That’s a lot weaker! A magnet’s magnetization direction can not be changed once the magnet. Neodymium magnets and ceramic magnets are both useful materials with strong magnetic properties, but they have some important differences that should be considered when choosing a magnet for a particular application. Menu. The resultant space efficiency is a major advantage in modern, minimalist speaker designs where space is at a premium. The grade N42 means a neodymium magnet has a maximum energy product of 42 MGOe. Visit our neodymium magnet materials page for additional. The exact ingredients depend on the grade or strength of magnet being produced. 000 gauss. They are made from an alloy of neodymium, iron, and boron. This magnet produced from rare earth. A 2-gram (0. Neodymium rare earth magnets (NdFeb) vary in shape and size, and the different shapes each have their own corresponding magnetization direction options. It all starts with the letter "N", representing neodymium. Most of our magnets are grade N40 so if they are heated above 80˚C or 176˚F they will demagnetize and lose their strength. We offer a diverse range of Neodymium rare earth magnets in different sizes, grades, and shapes, including discs, blocks, rods, and rings. Compare. Neodymium N38 Countersunk Ring Magnets – 15x5x5mm 9MAGNR15X10. At room temperatures, NdFeB magnets exhibit the highest properties of all magnet materials. Compared with many cheaper N35 grade neodymium magnets, their magnetism is 20% higher. All Pull Force values based on extensive testing in our laboratory. 0. Resulting Force (lbf): Neodymium Magnetic Pull Force Calculator calculates expected pull forces based on a single magne testing. F888-646-4. Magnet materials comparison guideComparing smco and neo Grades of neodymium magnet, which one is the best?Chart magnet neodymium strength pacemaker magnets thickness safety distance diameter dimensions safe minimum lighter playa idea gift would. A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements. In a pipeline which is cleaned using steam, the temperature will be above 100 degrees C for a period of time. Neodymium magnets are permanent magnets (i. they generate their own magnetic field) made from an alloy of the metallic elements neodymium, iron and boron. This magnet produced from rare earth. Overall, our best guess for neodymium market demand in 2021 is around 20-30kTpa. Around 6-9 kilotonnes (kt) of neodymium were used for EVs in 2020, 15-20% of all permanent magnet use in 2020. Add to cart. The magnetic field of a neodymium magnet reaches about 1. Neodymium magnets are often. And provides professional design and consultation service according to customers’ requirements. Many are bespoke for specific applications. Email: sales. At first4magnets. These extra-strong Neodymium N38 Bar Magnets offer high strength over a relatively large area, making them great for practical mechanical applications. One special advantage they have is that they are corrosion resistant and very easy to magnetize, making them the first choice for a lot of consumers, industrial, technical and commercial applications. Click Picture For Full Description and Wholesale Quantity Price Break Discounts. The bar chart shows the magnetic power (MGOe) of each type of magnet. This is often referred to as the magnet’s coercivity and you can read more about this here. Price Range:. Ferrofluid on glass, with a rare-earth magnet underneath. They are widely used as. While N52 magnets have a strength of 52 MGOe, a magnet made to work in any direction might only achieve 10-12 MGOe. Key Challenges • Properties deteriorate rapidly at temperatures Specific Thermal Conductivity. O. Make sure that all contact surfaces are clean and dry prior to bonding. 4 teslas. That’s a lot weaker! A magnet’s magnetization direction can not be changed once the magnet. 5–0. Price. F294. 5mm I. If it is really important for you to know the grade, you can send magnets out to be tested. A magnetic bracelet using 20 - 5mm 3000 gauss magnets that are 2 mm thick will be 25% stronger than the same bracelet with 1. Inhalation overexposure of iron dust may cause siderosis, a benign pneumoconiosis. Maximum energy product, also referred to as BHmax is calculated. Discover each grades magnetic properties. How Is The Strength Of A Magnet Measured; A History Of Electricity And Magnetism; A Comparison Of Magnetic Materials At A Glance; How Does A Magnet Work;. Generally, larger magnets are more potent than smaller ones, as they have more magnetic material. $1. Small neodymium magnet disk (1 mm x 1 mm) axially magnetized with high magnetic strength (N52). Neodymium magnets have a strength grade associated with them, from N30 to N52. BROWSE CATALOG. FB13B, FB14H : High-performance / thin-shaped molding materials. At FIRST4MAGNETS®, we are a proud supplier of the incredible N52 grade Neodymium magnets - one of the strongest magnetic materials that can be made commercially by any supplier in the world!Product Name: N45 Magnets Neodymium Disc. Previously, grades of ferrite magnets where labelled with the letter ‘C’ then a number, for example C1, C2, C3. 87 lbs. Neodymium magnets are available in a wide variety of grades such as N42, N52 and N42SH. NdFeB Magnet. At Stanford Magnets, we do not make any compromises on quality. There are five main types of permanent magnet material; these are, in order of strength from strongest to weakest, neodymium, samarium cobalt, alnico, ferrite, and flexible rubber. Because of their lightweight, strength and the consistency of their magnetization, Neodymium Magnets have become a popular choice for a wide variety of applications, from loudspeakers to magnetic therapy jewelry. There. Car magneticsCar custom dia magnet magnets Car magnets magnet sizesCar magnet custom oval magnets. It is usually placed after the material name. Tweet. Learn more about demagnetization (BH) curves for rare earth neodymium magnets. 3. The number in the magnet grade refers to the strongest point of the material’s B-H curve, or its maximum energy product. N52 is possible but only in certain sizes. When classifying neodymium magnets according to their magnetic strength, the grades come into view. For example, you are going to be driving your car during a storm. If your application involves higher temperatures, see our D66SH (Super High Temp) cylinders or D82SH discs . Neodymium (Nd), chemical element, a rare-earth metal of the lanthanide series of the periodic table. Magnet grade is the Arabic numerals used to distinguish the different properties. By comparison, a refrigerator magnet rates about 50. It is the force that a magnet can exert on an object made of ferromagnetic material, such as iron, nickel, or cobalt. Click here to go to our Repelling Force Magnet Calculator that shows the repelling force generated between two same-sized magnets. It is particularly useful for testing the strength of magnets used in industrial applications where the magnet is attached to a surface using an adhesive. At today’s price of $124. 5550 FOR A FREE QUOTE. The magnets are positioned with opposite poles facing one another, so that the magnets are attracting towards one another. 67. Shop our huge selection of high-quality magnets. All Pull Force values based on extensive testing in our laboratory. 11% of their magnetism for every 1 degree celsius rise in temperature. 30 per kg, neodymium changed –40. Your online source for incredibly powerful neodymium magnets. 001 tesla. com. Block magnets are defined by three dimensions: Length, Width and Thickness. N50 is the highest readily available grade. These magnets are widely used in products like microphones, professional loudspeakers, in-ear headphones, high-performance hobby DC electric motors, and computer hard disks, where low magnet mass (or volume) or strong magnetic fields are required. 2. 439 products. Blackmore, (TRIUMF, 1985) and A. Unlike standard neodymium magnets, high-temperature neodymium magnets are suitable for use at operating temperatures of up to 300° Fahrenheit (149° Celsius) – depending on the magnetic circuit. Choose from our selection of strong magnets, including neodymium magnets, encased neodymium magnets, and more. From £6. WPH-LG. like steel or iron. Neodymium magnets are a combination of Neodymium (Nd), Iron (Fe) and Boron (B), and are also referred to as NdFeB or Neo. According to a study published in the Journal of Magnetism and Magnetic Materials, neodymium magnets typically have a magnetic energy density between 30 and 50. Rare earth magnets A rare earth or neodymium magnet is the most powerful of any permanent magnets and is around 2-7 times stronger than a regular or ferrite magnet. N52 magnets are approximately 50% stronger than N35 magnets. At first4magnets. Unexpectedly, after the. They are also referred to as NdFeB magnets, or NIB, because they are composed mainly of Neodymium (Nd), Iron (Fe) and Boron (B). Product Description. It also graphs the field strength (for the portion of the magnetic field that is in the vertical direction) across the diameter of the magnet. Standard Magnet Strength. Magnetic Field Calculator. Looking for Super Strong Neodymium Magnets?. Unit Price Each. There are eight standard grades of these permanent rare earth magnets. The higher the grade, or N number, the incrementa. But among all the types of magnets available, neodymium magnets tend to lose their strength less. Fridge Magnets. Available in disc and cylinder shapes, Neodymium magnets have magnetic properties that far exceed all other permanent magnet materials. A Neodymium (Nd-Fe-B) magnet is a common rare earth magnet composed of neodymium (Nd), iron (Fe), boron (B), and transition metals. When heated above this, they will experience irrecoverable losses in performance. 2 1. Our inventory contains a large sampling of the different grades, however, if you need a different grade, shape or size. + Highest Energy of All Permanent Magnets. 50 x 50 x 25mm Ultra high Performance N52 Neodymium Magnet - 116kg Pull. For further information on bespoke magnet assemblies and magnet designs, please contact us via: Phone: +44 (0) 1442 875081. In terms of raw magnetic strength, neodymium magnets often outshine other types. This gives the compound the potential to have high coercivity (i. thick - 9. Magnetic sheets are produced using a calendering process; most tend to be 24 inches (610mm) wide with a length of up to 98 feet (30 m). R 11. Neodymium magnets are the strongest available magnet material with remanence (Br) between 10. Never use clips or pins to hold that badge to your garments again! Our magnetic badge holders will not damage your clothing and are easy to use!!Thickness (Inches) – Direction of Magnetization: Calculate Result. 9 to 5. Every type of rare earth magnet, whether neodymium, AlNiCo, or something else, has its own alphanumerical system for classifying strength. 200℃ (392℉) Neodymium Magnet ( also called Neodymium Iron Boron Magnet, Strong Magnet) can be supplied in different grade and size. k. Currently, all known strong magnets contain rare earth (RE) elements, and they are core components of a wide range of applications. Keep in mind that "ease of magnetization" is different from "strength of magnetization" because most materials that become easily magnetized are not strong magnets. Alnico 5: This is by far our most widely used guitar pickup magnet. Examples This magnet strength chart is useful to find the right magnet strength for your needs, whether you want a strong neodymium magnet for a high-performance job or a cheaper ceramic magnet for everyday use. On returning to normal operating temperatures below 176 degrees F, there is an irreversible loss in magnetic strength and permanent damage. 00 in February of 2022. Our high-quality Rare Earth Magnets are made from alloys of rare-earth elements. Besides the relatively lower Curie temperature, Nd 2 Fe 14 B is an. Ideal for home, school, office and shop. Weight. This number is a material property which is independent of the magnet shape. A neodymium magnet in there, even an un-magnetized one, might only be a little better than an air core. In it’s rod form, Alnico 5 gives the traditional Fender tone. The “N52” in N52 neodymium magnets refers to the maximum energy product, which measures the magnet’s energy density or magnetic strength. Getting started; neodymium magnets strength; neodymium magnets strength - Manufacturers, Suppliers, Factory from China We have now numerous great personnel members good at advertising, QC, and working with kinds of troublesome dilemma from the creation course of action for neodymium magnets strength, Irregular Motor Magnets,. Welcome to Lodestone Industries This website will provide you with a wide range of information about magnets, magnetic materials, magnetic products and many other interesting topics to help you better understand the incredible force that we know as magnetism. Others: The Breakdown. will not be held liable for its use. Neodymium magnets are rare-earth magnet materials with the highest magnetic properties. It has a magnetic flux reading of 6703. We stock hundreds of super strength magnets including the strongest magnets available to buy. New in 2020, we’ve added more curves, and a coatings chart to assist with corrosion. 5-degree wedge magnets 16 magnets form 8" OD x 4" ID x 1/4" ring High-performance wind generator magnets Grade N42 magnets Magnetized through-thickness. 060'' Thk. Actual measured and calculated values for a grade 27 neodymium -iron-boron magnet are shown below. Water Treatment Magnets. To put the power of two. christian beliefs. Ferrite magnets are made from more abundant, inexpensive materials and are cheaper to. In comparison to other types of magnets, rare earth magnets or neodymium magnets have a higher magnetic strength. Conveniently browse neodymium magnets by usage. 59 lb. Many online calculators we've seen determine pull force based on a theoretical calculation of the flux density. Neodymium ion borade magnets have not only found their way into almost billions of electric motors and electronic devices around the world but also into wonderful toys for children. This is about 200 times the strength of the Earth’s magnetic field. For the Thanksgiving Day holiday, orders placed after 1:00PM EST on Wednesday, 11/22/2023, will be shipped on Monday, 11/27/2023. #8. A rare earth magnet is a magnet made from one of the rare earth elements (of which there are 17) in the Lanthanide series of metals in the periodic table. Neodymium magnets operate better at colder temperatures. Permanent magnets (PMs) produce magnetic fields and maintain the field even in the presence of an opposing magnetic field. Neodymium is also used in the glass for tanning booths, since it transmits the tanning UV rays but not the heating infrared rays. (7MB) This PDF catalog features a magnet materials overview, chart of materials properties and demagnetization curves for Neodymium, Samarium Cobalt, Ceramic (Ferrite) and Alnico materials offered by Adams. Neodymium Magnets Products are divided into two major categories: Sintered Neodymium Magnet and. 98buy 100+ items and save 27%. When designing a magnetic solution, physical strength is not always the most important factor and each material has its own unique. 99 $19. W/m. strength (MPa 70 Density (Mg/m3) 4. e. Generally speaking, neodymium magnets range from N35 to N55 in grade. Copper and titanium may be added to increase magnetic strength. 5 1. A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements. Magnetic induction B (also known as magnetic flux density) has the SI unit tesla [T or Wb/m 2 ]. As a rule Neodymium Magnets lose 0. Saturation Field Strength. Advantages: All metal design, strong and sturdy. Two D84 disc magnets repel one another, but must be constrained in the tube for stability. Imagine you have two neodymium magnets: one is an N35 magnet, and the other is an N52 magnet. The pull strength is the highest possible holding power of a magnet, measured in kilograms. That's the property that tends to redirect the electromagnet's field through the core. Rare earth samarium-cobalt offers a balance of strength and temperature resistance. 375 inches in diameter byAdjust the scale to zero to cancel the weight of the test piece and spacer. 25" Thk. Explore. Bunting designs and manufactures a wide range of magnets and magnetic assemblies . High strength N45 Grade Neodymium is used to produce this disc-shaped magnet. We can produce custom magnets that withstand high temperatures. #3. In general, higher numbers indicate a stronger magnet. Choose from our selection of round magnets, including neodymium magnets, encased neodymium magnets, and more. First4magnets stocks the largest range of rare earth magnets in the UK, including neodymium (NdFeb) magnets which are the strongest in the World. High temperature grades of neodymium. When designing a magnetic solution, physical strength is not always the most important factor and each material has its own unique. The most significant difference between N35 and N52 neodymium magnets is their magnetic strength. This is the primary indicator of a magnets ‘strength’. This means that when defining your magnet need, it is important to keep in mind that the higher the BHmax, the stronger the magnet will be. 2 Neodymium iron boron (NdFeB) magnets: These are the most powerful. 5 A, while C and D. According to the National High Magnetic Field Laboratory of Florida State University, a fridge magnet is about 0. Grades of ndfeb magnetsBuy strong neodymium magnets,rare earth magnets,n52 magnets reviews Magnet grade grades magnets neodymium strong rare earth strength n52 temperature strongest reviews buy should chooseGrades magnets teachersparadise. N rating. 439 products. Most neodymium magnets are plated with nickel. They have an elaborate manufacturing process of vacuum melting, milling, pressing and sintering. N42 Neodymium Rod Magnet - 3/4 in. 10 Pcs of N48 Neodymium Magnets 1/8 inch Cube. This tool calculates magnetic field strength measured in gauss, on the centerline of a disc magnet or ring magnet magnetized through its thickness, at a distance of X from the surface of the magnet. A ferrite or ceramic magnet usually creates a weak. This will have a strong magnetic field that will attract all kinds of debris and things on the road such as rocks and twigs. 07046 - N35¸ 0. View 24. [SG STOCK] Various Magnet Sizes Neodymium Disc Circular Round Arts and Check Details. Specifications of Neodymium Magnets, Physical and Mechanical Characteristics, Magnetic Characteristics, Thermal Characteristics, Plating Characteristics . To put their strength into perspective, they can produce magnetic fields with up to 1. Let's walk through a few examples to illustrate how to use these charts, and what it all means. A higher N is stronger. 118'' Thk. For neodymium magnets strength chart, everyone has different special concerns about it, and what we do is to maximize the product requirements of each customer, so the quality of our neodymium magnets strength chart has been well received by many customers and enjoyed a good reputation in many countries. The n42 magnet pull strength depends on neodymium magnet sizes, the plating and how it is used. devices such as microphones and speakers. An alloy of neodymium, iron and boron discovered in the 1980s is ferromagnetic, yielding permanent magnets over 1000 times stronger than anything ever seen before. Continue reading → 1 - Neodymium iron boron (NdFeb) Neodymium magnets are the most powerful magnets available (per unit volume) with the ability to attract 1,000 times their own weight. The bar chart shows the magnetic power (MGOe) of each type of magnet. Ferrite Magnetic Discs 14 x 8 mm Y30 for Assembling Products or Handcrafts. Magnetic Properties 41,300. Double the N number and you get. The number comes from the Maximum Energy Product of the magnet material, expressed in MGOe (Mega Gauss Oersteds). they generate their own magnetic field) made from an alloy of the metallic elements neodymium, iron and boron. In fact, according to. Read more about where neodymium magnets are used in. A. The maximum recommended temperature for the NdFeB magnets is +230 degrees C, whereas the SmCo can work at +300 to +350 degrees C. 2:17 types, with higher H ci values, offer greater inherent stability than the 1:5 types. This disc magnet has the power of N35 grade neodymium alloy and promises durability, consistency, and powerful magnetic strength. Some of which are N35, N38, N42, N45, and N48. Neodymium Historical Price Movement. $0. This distance may be closely related to a minimum safe operating distance for pacemakers and ICDs. 5. Price - Chart - Historical Data - News. Fridge Ferrite Round Disc Magnet 15 x. A round neodymium magnet with a diameter of 20mm and a thickness of 3mm has a pull force of approximately 3. The necessary. 12 best images about world religion on pinterestChristianity vs mormon mormonism chart choose board doctrine Mormonism shares many unsusual historical features with christianityMormon vs. Neodymium magnets are. 25 D and the distance from the pole face (X) is 100% D. Magnets are stronger when the number is higher. Axially Magnetized Examples include D82 and D48. Neuron specific enolase which is the determinant of neuronal damage and S100 blood levels. They also have many uses in creative applications such as models and theatre design, furniture making, exhibition stands, and packaging. Waterproof hook magnet, great for hanging decor. Review the typical magnetic and physical properties of Neodymium Magnets in our Permanent Magnet Comparison Chart. NR191003-LMI. From £104. What are Neodymium magnets?. These are the strongest of the rare earth magnets and used in virtually every industry. Neodymium magnets, or to give them their full title, neodymium-iron-boron (NdFeb) magnets are part of the permanent rare earth family of magnets and are renowned for being the strongest permanent magnets in the world. Magnet physical properties is a good reference value when you choosing a magnet material from NdFeB, SmCo, AlNiCo and Ferrite Magnets. 1. Composed mainly of. This distance may be closely related to a. At room temperatures, NdFeB magnets exhibit the highest properties of all magnet materials. –. For a comparison of neodymium material grades, please see our chart of material properties. There are five main types of permanent magnet material; these are, in order of strength from strongest to weakest, neodymium, samarium cobalt, alnico, ferrite, and flexible rubber. White Running Marathon Race Bib Number Magnets. 49. For the Thanksgiving Day holiday, orders placed after 1:00PM EST on Wednesday, 11/22/2023, will be shipped on Monday, 11/27/2023. some are replicas of original t-jet, some are uniquely new. x 0. Magnetic characteristics distribution charts of NEOREC Series. Identify the poles: Determine the weakened and strong permanent magnet’s north and south poles. If these magnets are arranged according to their magnetic force from large to small, they are NdFeB magnet, SmCo magnet, AlNiCo magnet, and ferrite magnet. Neodymium magnets are often assembled into products using strong adhesives such as Loctite 325. The two-digit number that follows signifies the maximum energy product, measured in Mega-Gauss Oersteds (MGOe). Magnets are stronger when the number is higher. They are a relatively new invention and have only recently become affordable for everyday use. Topics Covered in this Guide. It can be showed by the magnet’s Demagnetization Curve, or BH Curve – the strongest point is (BH)max. Counter-bored neodymium magnets with opposite poles on the counter-bored faces provide a secure hold and because neodymium is the strongest magnetic material in the world a magnet just 5mm in diameter can be effective. Depending on where you have your sources from, there are different facts on this subject on the. The magnetic moment of a substance can be calculated based on whether the substance is an inherent magnetic field or a magnetic field caused by an electric current. Our Superiority: Customized is Available! * T/T, L/C, Paypal and other payment accepted. It has a diameter of 8mm and a height of 2mm and is axially magnetised through the 2mm thickness. fastest shipping! No Minimum Order! K&J Magnetics, Inc. Other common materials such as SmCo, AlNiCo, and Ferrite magnets are also listed as these can be produced to order as custom magnets. Holding Power: 7 lbs. Their strength is often given in terms of its gauss rating; depending on their shape and grade, this type of magnet may rate 13,500 gauss or more, although a small one usually rates about 2,000 gauss. Simplified, the rotating shaft of a wind turbine is connected to one or more strong magnets, usually neodymium magnets, these magnets turn. The number comes from an actual material property, the Maximum Energy Product of the magnet material, expressed in MGOe The grades generally available to buy, range from N30 to N52 as lower grades are generally no longer manufactured. We are happy to help you select the proper magnet for your application. Box Package, SCD156. 11. Set of small size neodymium magnet disk of 1 mm x 1 mm made from the world's strongest magnet grade N52 to create micro actuators. Magnet ID: Disc-10x5mm-N45-Ni. Neodymium magnets are sensitive to heat. Only this friction force keeps the magnet from sliding down the face of the refrigerator door. Demagnetization Curve. Coeff. Neo magnets can be found in a variety of applications including high performance motors, brushless DC motors, magnetic separation, magnetic resonance imaging, sensors, switches. 04%. It provides information about the magnetic field strength. 30. AMF Magnets USA has a range of Neodymium Magnets in various grades from N30 to N52 and with heat tolerances from 80° to 200°C. Developed in the 1970s and 1980s, rare-earth magnets are the strongest type of permanent magnets made, producing significantly stronger magnetic fields than other types such as ferrite or alnico magnets. If you have any questions feel free to give us a call (888-727-3327). See Our Range of Neodymium Magnets. The grade without suffix letter has maximum operating temperature 80°C, however N52 & N55 (the highest. The strongest permanent magnets in the world are neodymium (Nd) magnets, they are made from magnetic material made from an alloy of neodymium, iron and boron to form the Nd 2 Fe 14 B structure. The pull strength is the highest possible holding power of a magnet, measured in kilograms. The commonly available grades range from N30. The successful development of Neodymium magnet announced the birth of the third. In magnetic jewelry we can count the number of magnets, measure the. NdFeB Magnet NdFeB magnet is a tetragonal crystal composed of neodymium, iron and boron (Nd2Fe14B). Levitation Magnets. Temp. –. Higher values mean stronger magnets. Neodymium magnets are labeled with a grade, an N rating that signifies a magnet’s level of strength. Reach around corners and obstructions to inspect hard-to-see areas. Each one is unique, and there’s no simple formula for translating a system from one magnet type into the system for another. The grades that can usually be purchased range from N30 to N52, because low-grade neodymium magnets are usually no longer produced. 11 for 1 to 9 items. Neodymium iron boron (NdFeB), or “neo” magnets offer the highest energy product of any material today and are available in a wide range of shapes, sizes and grades. Align the magnets: Place the strong magnet’s north pole against the weakened magnet’s. 76. pull. The main phase of this material is Nd 2 Fe 14 B and its maximum energy products achieved 280kJ/m3 at that time. N35 is, therefore, the weakest and n50 the strongest of the neodymium magnets. The addition of cobalt, terbium, dysprosium, and other elements to the sintered neodymium iron boron raw materials. Rare-earth magnets are made of neodymium iron boron (NdFeB). They are widely used as. 75 pounds). It is an N45 grade rare earth magnet. These 15mm diameter 5mm thick Neodymium N38.