The strength of rare earth magnets. Price - Chart - Historical Data - News. What are Neodymium magnets?. That “N” number relates to their maximum energy product, a measure of strength expressed in MegaGaussOersteds, or MGOe. The largest Rare Earth component in permanent magnets is Neodymium, comprising 27% by mass of Nd2Fe14B magnetic material. For even higher temperatures, N50M, N48H and N42SH are popular for industrial application. It is an N45 grade rare earth magnet. strength MPa) 270 Density (Mg/m3) 7. That “N” number relates to their maximum energy product, a measure of strength expressed in MegaGaussOersteds, or MGOe. Taking the Residual Magnetism from the table as 12,000 gauss (12 KG), the field strength. There are four main types of permanent magnets – neodymium, samarium cobalt, alnico and ferrite. Simplified, the rotating shaft of a wind turbine is connected to one or more strong magnets, usually neodymium magnets, these magnets turn. Larger numbers mean a higher surface field strength, so for a given size of magnet, one with a larger number will be stronger. 4 Teslas, while other types typically range from 0. $1. e. Of Br −0. 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. Magnet neodymium magnets temperature chart strength magnetic low performance n52 rare earth temperaturesNeodymium magnet grades Neodymium magnets grades permanentSafety info – magneticpoetry. The. 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. The major application of neodymium is in high-strength. Inhalation overexposure of iron dust may cause siderosis, a benign pneumoconiosis. It shows the minimum distance to get below 5 gauss for many disc / cylinder magnet sizes. At first4magnets. 22% in value. Fridge Ferrite Round Disc Magnet 15 x. 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. Generally speaking, neodymium magnets range from N35 to N55 in grade. Waterproof hook magnet, great for hanging decor. They are commonly used in applications such as. 2:17 types, with higher H ci values, offer greater inherent stability than the 1:5 types. A magnet grade is a good measure of the strength of a magnet. Roughly 2/3 of a neodymium magnet is composed of iron. Previously, grades of ferrite magnets where labelled with the letter ‘C’ then a number, for example C1, C2, C3. 907kg. Neodymium magnets are permanent magnets (i. 70 per kg on Jan 1st 2021 it has increased +14. 1. 118'' Thk. They are made from an alloy of neodymium, iron, and boron. Production R&D. Master Magnetics is your Magnet Source for Neodymium Rare Earth Magnets. Around 6-9 kilotonnes (kt) of neodymium were used for EVs in 2020, 15-20% of all permanent magnet use in 2020. In general, higher numbers indicate a stronger magnet. When designing a magnetic solution, physical strength is not always the most important factor and each material has its own unique. For your everyday projects and most applications this is not an issue as the maximum operating temperature of a standard Neo magnet before it begins to lose its magnetic properties permanently is 80° C or 176°F. The lower NdFeB magnet grades are no longer made and the range now starts at around N30 or N33. Neodymium magnets are a combination of Neodymium (Nd), Iron (Fe) and Boron (B), and are also referred to as NdFeB or Neo. N35 and N52 magnet demagnetization curves. These extra-strong Neodymium N38 Bar Magnets offer high strength over a relatively large area, making them great for practical mechanical applications. Simple tests like a paper clip, coin, or magnet-to-magnet tests can further confirm if a magnet is made of neodymium. It refers to the maximum magnetic energy that the material can be stored. A ferrite or ceramic magnet usually. 6 Neodymium magnets are also used in wind turbines, aeronau cs and space. Fill in all of the blank calculation fields, click the calculate button and the results will appear. 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. The grade without suffix letter has maximum operating temperature 80°C, however N52 & N55 (the highest. Conveniently browse neodymium magnets by usage. Composed mainly of. Within the working temperature range, neodymium magnets lose 0. F. 00. N52 magnets are the strongest neodymium magnets you’ll come. Not only are they more potent, but they are also more compact, offering superior performance in a smaller package—a. References. A magnet is strongest. Neodymium decreased 330,000 CNY/T or 34. Review (3) Set of 100 Magnetic Badge Holder with Steel Back Plate - Name Badge Magnets. Unfortunately, this simplification. Most of our magnets are grade N42 or above. The number comes from an actual material property, the Maximum Energy Product of the magnet material, expressed in MGOe (Mega Gauss. Your online source for incredibly powerful neodymium magnets. For example, you are going to be driving your car during a storm. Block magnets are defined by three dimensions: Length, Width and Thickness. 3mm dia x 2mm thick N42 Neodymium Magnet - 0. Price - Chart - Historical Data - News. A neodymium magnets (also known as NdFeB, NIB or Neo magnet), the most widely used type of rare-earth magnet, is a permanent magnet made from an alloy of neodymium, iron and boron to form the Nd2Fe14B tetragonal crystalline structure. Keep in mind that "ease of magnetization" is different from "strength of magnetization" because most materials that become easily magnetized are not strong magnets. Levitation Magnets. BuyMagnets. There are eight standard grades of these permanent rare earth magnets. It is possible that some hard drives use N52 magnets but in general there is no way to tell. Demagnetization curve is a very important indicator of magnetic characteristic. significantly below neodymium magnets. Magnets made with neodymium are the strongest of the rare-earth magnets. Neodymium Magnets Features & Characteristics. 10% Off. 302-326. As a rule Neodymium Magnets lose 0. they generate their own magnetic field) made from an alloy of the metallic elements neodymium, iron and boron. The main ingredients of a neodymium magnet are neodymium itself, iron, and boron; the chemical compound known as NdFeb. 5 to 0. 7 Other uses of neodymium include making a specialized glass used in. The magnets are positioned with opposite poles facing one another, so that the magnets are attracting towards one another. Every type of rare earth magnet, whether neodymium, AlNiCo, or something else, has its own alphanumerical system for classifying strength. This is the primary indicator of a magnets ‘strength’. 10% Off. Other Properties. The Original K&J Magnet Calculator. We will work with you to understand the operating parameters and whether a Neodymium magnet or other one constructed of another material is best suited for your needs. There are several important distinctions between these two types of magnets, including composition, strength,. 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. The epoxy magnet with no visible rust tested just fine. Alnico magnets are permanent magnets made of aluminum, nickel, and cobalt. These 15 elements, plus scandium and yttrium, are termed “rare earth elements” (REEs). The basic principle is that the higher the number the stronger the magnet. 8" Long X 1/2" Wide X 5/32"Thick. This chart only applies to disc/cylinder magnets with the diameter and thickness shown. While electromagnets. Demagnetization Curve. When heated above this, they will experience irrecoverable losses in performance. The magnet is made of N45 Grade Neodymium which gives it even stronger. 56% since the beginning of 2023, according to trading on a contract for difference (CFD) that tracks the benchmark market for this commodity. We provide a variety of shapes (discs, blocks, spheres, and more) in sizes ranging from small to large, and grades, including N35, N42, and N52. 5mm I. like steel or iron. high-performance neodymium-iron-boron magnets is in the motors of electric and hybrid vehicles. 7, the magnet can be operated at maximum working temperature before irreversable losses occur. Resulting Force (lbf): Neodymium Magnetic Pull Force Calculator calculates expected pull forces based on a single magne testing. On returning to normal operating temperatures below 176 degrees F, there is an irreversible loss in magnetic strength and permanent damage. 3 min read. Alnico 5: This is by far our most widely used guitar pickup magnet. 439 products. Compared with many cheaper N35 grade neodymium magnets, their magnetism is 20% higher. This calculator only considers discs and cylinders that are magnetized along the cylindrical axis. Actual measured and calculated values for a grade 27 neodymium -iron-boron magnet are shown below. magnet pull strength: Exposing magnets to high temperatures outside their design range may cause magnets to fail completely or show signs of weakening. Standard Magnet Strength. 5 to 1 Tesla. Parker's Advances in Permanent Magnetism (John Wiley and Sons, 1990). Unexpectedly, after the. 5 Teslas. See Our Range of Neodymium Magnets. In addition to their high magnetic strength, they are. Having enough force to levitate it isn’t the problem. Neodymium Iron Boron magnets are the strongest permanent magnets available at room temperature and up to about 180 degrees C –measured by their magnetic Remanence (Br). The necessary. Magnet grades neodymium grade magnetsNeodymium magnets handling guidelines Neodymium. Coeff. 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. + Highest Energy of All Permanent Magnets. They are assigned the values 35, 38, 40, 42, 45, 48, 50 and 52 with a prefix lettering, N (neodymium). Great for projects that require. The bar chart shows the magnetic power (MGOe) of each type of magnet. Available. What is the pull force of N35 grade neodymium magnets? 1. Rare earth samarium-cobalt offers a balance of strength and temperature resistance. With a few assumptions, flux density (in Gauss) can be related to. in load-bearing situations. For maximum energy product, convert megaGaussOersteds (MGOe) to. The big difference is in the optimum temperatures for each magnet. . Flexural Strength-0. If you took the magnet out of a Mounting Magnet, you might only see half the pull force that you had fully assembled. Science Project Magnets. 4 teslas. 76. A Magnetic field is an invisible flux moving from one end of the magnet to the other, as shown in Figure 1. Blackmore, (TRIUMF, 1985) and A. The N35 magnet has a Maximum Energy Product (BHmax) of 35 MGOe (Mega-Gauss-Oersteds), while the N52 magnet has a BHmax of 52 MGOe. Neodymium magnets are sensitive to heat. White Running Marathon Race Bib Number Magnets. Compact - Huge strength in a small magnet, allowing for. This huge difference means that the N52 magnets have around 49% more energy than that of the N35 magnets. In general, the higher the maximum energy product value, the greater the magnetic field the magnet will generate in a particular application. Historically, Neodymium reached an all time high of 1520000 in February of 2022. Choose from our selection of N35 magnets in a wide range of styles and sizes. 6kg. Alnico magnets have 5 to 17 times the magnetic force of magnetite or lodestone. Neodymium Grades A Neodymium (Rare Earth) magnets Grade (eg:N42) is an accurate guide to the strength of a magnet. These are the strongest of the rare earth magnets and used in virtually every industry. These magnets can then sliced into smaller magnets or ground to tighter tolerances. If your application involves higher temperatures, see our D66SH (Super High Temp) cylinders or D82SH discs . The resistance of the crystal lattice to turn its. Magnetized. 15,829. Despite their mega strength, Neodymium magnets are considered to have a low maximum temperature resistance. Read more about where neodymium magnets are used in. The material and grade of a magnet refer to a set of properties that ultimately yield the magnet’s performance. 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. Moderately priced. Maximum energy product, also referred to as BHmax is calculated. 49. 3. 98buy 100+ items and save 27%. Just put two neodymium magnets with opposite magnetic poles on both sides, place some objects in the middle of the two magnets, and then release the two magnets to test the. Common permanent magnet magnets on the market mainly include NdFeB Magnet, SmCo magnet, AlNiCo magnet, and ferrite magnet. 7-15 μm. By comparison, a refrigerator magnet rates about 50. Available in disc and cylinder shapes, Neodymium magnets have magnetic properties that far exceed all other permanent magnet materials. For maximum energy product, convert megaGaussOersteds (MGOe) to. Saturation Field Strength. Discover each grades magnetic properties. Getting started; Neodymium Magnet Strength Rating; Neodymium Magnet Strength Rating - China Manufacturers, Factory, Suppliers. Neodymium Magnets Products are divided into two major categories: Sintered Neodymium Magnet and. 5 A, while C and D. fastest shipping! No Minimum Order! K&J Magnetics, Inc. As an example, these plated high-temperature N35 neodymium disc magnets can often be found in oil filters to separate. $0. Sale. 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. There. The magnet is 0. Strength magnets neodymium safety info neodymium cylindrical neodymium strength magnet neodymium grades magnetic reference properties following table their neodymium magnets carolina neodymium thicker. N50 is the highest readily available grade. Samarium Cobalt magnets have Br values between 8. Neodymium magnets (also known as "NdFeB", "Neo" or "NIB" magnets) are permanent magnets made of neodymium, iron & boron. Permanent magnets (PMs) produce magnetic fields and maintain the field even in the presence of an opposing magnetic field. All Surface Field values are at the magnet surface, in the center of the axis of magnetization. Neodymium magnets in the UK are the strongest commercially available magnets, meaning that they can lift objects many times their weight. In terms of raw magnetic strength, neodymium magnets often outshine other types. Neodymium is a ductile and malleable silvery white metal. 56% since the beginning of 2023, according to trading on a contract for difference (CFD) that tracks the benchmark market for this commodity. 95 Add to cart. Super Strong Rare Earth Neodymium Arc & Wedge Magnets. Other common materials such as SmCo, AlNiCo, and Ferrite magnets are also listed as these can be produced to order as custom magnets. Br, Residual Induction. While N52 magnets have a strength of 52 MGOe, a magnet made to work in any direction might only achieve 10-12 MGOe. In Fender-style pickups, it has the best balance of extended lows, mids, and highs. The “N52” in N52 neodymium magnets refers to the maximum energy product, which measures the magnet’s energy density or magnetic strength. Neodymium magnets are a combination of Neodymium (Nd), Iron (Fe) and Boron (B), and are also referred to as NdFeB or Neo. Waterproof hook magnet, great for hanging decor. 6 5. Thickness (Inches) – Direction of Magnetization: Calculate Result. 25 D and the distance from the pole face (X) is 100% D. N42 grade offers a high performance at an. For magnetic flux density and magnetic induction (B), convert Gauss (G) to Tesla (T). Holiday magnetic thumbtack kits. Check out our full collection here. 2 Customers are advised to consult us on any application involving temperatures near to 150°C. Boots horse mountain sovereign riding rider tall equestrian ladiesMountain horse winter boot collection – mountain horse usa Buy mountain horse vermont lace tall bootHorse boot size chart. ¸ 0. This disc magnet has the power of N35 grade neodymium alloy and promises durability, consistency, and powerful magnetic strength. Review the typical magnetic and physical properties of Neodymium Magnets in our Permanent Magnet Comparison Chart. Neodymium magnets are also commonly used in engineering and manufacturing where compact size and maximum strength are required. Each magnet has a grade, which typically denotes its strength. #8. Perhaps the easiest way to measure the field strength of the magnets, or at least the effective field strength of the magnets, is to build them into a generator and measure the voltage produced in the coils. We are happy to help you select the proper magnet for your application. Home // Access Hardware // Understanding Neodymium Magnets and Why Grade Matters // Understanding. 10 Pcs of N48 Neodymium Magnets 1/8 inch Cube. Neodymium is a component, along with praseodymium, of didymium glass. Inhalation overexposure of iron dust may cause siderosis, a benign pneumoconiosis. Key Features: Material: Premium N35 Neodymium. While N52 magnets have a strength of 52 MGOe, a magnet made to work in any direction might only achieve 10-12 MGOe. The bar chart shows the magnetic power (MGOe) of each type of magnet. they generate their own magnetic field) made from an alloy of the metallic elements neodymium, iron and boron. Finally, we offer rubber encased magnets. Others: The Breakdown. Compared with many cheaper N35 grade neodymium magnets, their magnetism is. Please contact Arnold. Magnetic field drops off as the cube of the distance from a dipole source. OK. The main phase of this material is Nd 2 Fe 14 B and its maximum energy products achieved 280kJ/m3 at that time. The second type of mounting magnets are Neodymium Magnets with a hole designed for a specific size flat head screw. 2. Neodymium magnets were first developed in 1982 by General Motors and Sumitomo Special Metals following the formulation of the alloy NdFeB, which is made of neodymium as well as iron and boron. OK. Neodymium magnets can reach a listed pull force of 1. 2:17 types, with higher H ci values, offer greater inherent stability than the 1:5 types. The steel housed magnetic assemblies are also often referred to as POT magnets, or CUP magnets. There are other N ratings of neodymium magnets. Ceramic magnets are typically manufactured through sintering, similar to neodymium magnets. A magnetic bracelet using 3000 gauss magnets with 20 - 3mm magnets is half the strength of a bracelet with 20 - 5mm magnets. 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. Currently, all known strong magnets contain rare earth (RE) elements, and they are core components of a wide range of applications. N52 is possible but only in certain sizes. Reviewed by Osman Hafeji, Technical Support Engineer (March 2021) Neodymium magnets are permanent magnets (i. ,LimitedStandard car magnet sizes and guidelinesIndex of /images/img_oth Car magnets – rainbow printingMagnetic strength chart. It is so strong because it has a very high state of saturation, magnetization. DIYMAG specialized in the research, development, application and production of high-qualified magnets and magnetic assemblies. Standard grade neodymium magnets have a maximum operating temperature of 80 degrees Celsius. Measuring Magnetic Field Strength of Neodymium Magnets Using a Gaussmeter. The maximum energy product of a magnet is measured in Mega Gauss Oersteds (MGOe). 004” to 0. For this reason, neodymium magnets are also known as NdPr magnets. Water Treatment Magnets. If we go back further to Jan 1st 2018, when the cost of neodymium was $70. Samarium Cobalt and Neodymium Iron Boron both make very strong magnets. Typically, the higher the magnet grade, the greater the corresponding strength of the magnet. The magnetic force pulls the magnet straight towards the steel door. The necessary. 59 for 1 to 99 items. Maximum energy product, also referred to as BHmax is. Neodymium magnets were first produced in response to the high price of samarium-cobalt magnets, giving need to identify an economical, high. N52 magnets are approximately 50% stronger than N35 magnets. Magnet grade is the Arabic numerals used to distinguish the different properties. The magnetic length. 21 for 10 to 99 items and save 10%. These magnets can then sliced into smaller magnets or ground to tighter tolerances. A round neodymium magnet with a diameter of 15mm and a thickness of 4mm has a pull force of about 2. Gap: This Gap Calculator estimates the magnetic field strength between two neodymium magnets separated by a small gap. 2 1. Additional info. N35 Neodymium Disc Magnet: Superior Strength in a Compact Size. Uses for our Rare Earth Cylinder Magnets : These Neodymium Cylinders are a great versatile product that is suited to. Most come in round shapes, but we also offer a few Rectangular Mounting Magnets. Imagine you have two neodymium magnets: one is an N35 magnet, and the other is an N52 magnet. It is usually placed after the material name. Pull the scale upward very slowly while maintaining a perpendicular angle. Suggestion: With the progress of technology, the magnet performance may be changed, customers should refer to the latest version of our company; in addition to the above NdFeB magnet grades, our company can also produce special performance NdFeB magnets, welcome to contact us. Neodymium magnets are certainly usable at these low temperatures, but the loss in strength below -150°C should be planned for. dia x 1/32 in. There are eight different standard grades of neodymium magnets typically used in commercial applications today ranging from N35 to N52. k. Neo Magnets are the strongest magnets in the world – the higher the grade, the. If magnetism is inherent, the size. 65 T), the experiments on the magnetic field (MF) effects on water evaporation rate and surface tension were performed at room temperature (22–24 °C). 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. + Moderate Mechanical Strength. When designing a magnetic solution, physical strength is not always the most important factor and each material has its own unique. com, we do not compromise on quality and the majority of our magnets are grade N42 or above, making them 20% more magnetic than many cheaper N35 grade neodymium magnets. Even this can generate a force of over 1700 grams (3. $2. (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. From £12. It shows the minimum distance to get below 5 gauss for many disc / cylinder magnet sizes. A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements. After the testing, we found decreases in strength ranging from 0% to 11%. 00 in February of 2022. 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. Each magnet has a grade, which typically denotes its strength. Composed of neodymium, iron & boron, these strong permanent magnets are the most powerful class of magnet materials. 9. Get in Touch to Discuss Your Application. The magnet is about as thick as a cd and about as wide as your pinky but it'll hold up about 10lbs or so. 180-750. Better performance than 2x1x1/2" magnets 22. Magnet ID: Disc-10x5mm-N45-Ni. You can measure the magnetic field in teslas or the magnetic flux in webers or Teslas • m 2 ("tesla square meters"). The grades of. From £1. Neodymium (Nd), chemical element, a rare-earth metal of the lanthanide series of the periodic table. These ferrite magnets have a medium magnetic strength ratio and they can be used at high temperatures. Composed of neodymium, iron & boron, these strong permanent magnets are the most powerful class of magnet materials commercially available today. The most significant difference between N35 and N52 neodymium magnets is their magnetic strength. ARC4025. Hundreds of uses: household, industrial, and commercial. Our magnets are often used in oil pans, on oil filters or elsewhere to filter metal chips out of oil. These are the strongest of the rare earth magnets and used in virtually every industry. This disc magnet has the power of N35 grade neodymium alloy and promises durability, consistency, and powerful magnetic strength. 3 Billion in 2022 to USD 3. Around 10% of permanent magnets (4 kt neodymium) were used for wind turbines, notably offshore turbines and Chinese onshore turbines. 07046 - N35¸ 0. Neodymium magnets in the UK are the strongest commercially available magnets, meaning that they can lift objects many times their weight. $0. Generally speaking, neodymium magnets range from N35 to N55 in grade. Neodymium rare earth magnets (NdFeb) vary in shape and size, and the different shapes each have their own corresponding magnetization direction options. These magnets can then sliced into smaller magnets or ground to tighter tolerances. The grade is a good indicator of the strength of a magnet. m 2). For an in-depth explanation of how this calculator works, check out our Gap Calculator article. Neodymium (neo) magnets, which are part of the rare earth magnet family, are popular for their extreme strength in a compact size and weight, and for their high coercive force (they are permanently magnetized for use in temperatures below 590°F). Many are bespoke for specific applications. For example: N42 of sintered ndfeb magnet, BNP10 of bonded neodymium magnet, 30H of smco 2:17, alnico5, ferrite Y30 or PA6 of injection molding ferrite. STRONGEST MAGNETS. 47 for 100 to 999 items and save 20%. You can measure the overall magnetic strength of a magnet (called the magnetic moment) or its local strength (called the magnetization for short). But among all the types of magnets available, neodymium magnets tend to lose their strength less. Neodymium is a rare earth element that is. They are a relatively new invention and have only recently become affordable for everyday use. Ideal for home, school, office and shop. Visit our neodymium magnet materials page for additional. N52 is possible but only in certain sizes. You can measure the magnetic field in teslas or the magnetic flux in webers or Teslas • m 2 ("tesla square meters"). See our Specs page for more Br values for various neodymium magnet grades. It all starts with the letter "N", representing neodymium. That’s a lot weaker! A magnet’s magnetization direction can not be changed once the magnet. 70 per kg on Jan 1st 2021 it has increased +13. The lower NdFeB magnet grades are no longer made and the range now starts at around N30 or N33. And provides professional design and consultation service according to customers’ requirements. With proper care and protection, neodymium magnets can last for many years or even decades, retaining a significant portion of their original magnetic strength. Our inventory contains a large sampling of the different grades, however, if you need a different grade, shape or size. Remagnetize with a Strong Permanent Magnet: Follow these steps to remagnetize your magnet using a strong permanent magnet: a. Our site includes a history of magnets , a glossary of magnetic terms used. 11% of their magnetism when the temperature rises by 1 ℃. Neodymium Disc Magnet 15mm x 5mm N42. Each one is unique, and there’s no simple formula for translating a system from one magnet type into the system for another. The addition of cobalt, terbium, dysprosium, and other elements to the sintered neodymium iron boron raw materials. 10-100. The tetragonal Nd 2 Fe 14 B crystal structure has exceptionally high uniaxial magnetocrystalline anisotropy (HA~7 teslas – magnetic field strength H in A/m versus magnetic moment in A. com, we do not compromise on quality and the majority of our magnets are grade N42 or above, making them 20% more magnetic than many cheaper N35 grade neodymium magnets. The higher the Curie temperature of the magnet, the higher the working temperature and the better the temperature stability. There are eight standard grades of these permanent rare earth magnets. They are from the Rare-Earth magnet family and have the highest magnetic properties of all permanent magnets, stronger than Samarium Cobalt (SmCo), Alnico and Ferrite. Conclusion. 2 Super II's. Neodymium is the strongest type of permanent magnets, samarium cobalt is the second strongest.