Moderately priced. Remanence (B) – this measures the magnetic field’s strength. The grade of the metal, surface condition and angle of pull all have an impact on the pull strength. high-performance neodymium-iron-boron magnets is in the motors of electric and hybrid vehicles. Neodymium magnets have special characteristics that translate to exceptional strength. These 15mm diameter 5mm thick Neodymium N38. Grade magnets 1st anchor chart 2nd science magnet activities. Neo magnets can be found in a variety of applications including high performance motors, brushless DC motors, magnetic separation, magnetic resonance imaging, sensors, switches. Every type of rare earth magnet, whether neodymium, AlNiCo, or something else, has its own alphanumerical system for classifying strength. 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. See our Specs page for more Br values for various neodymium magnet grades. A magnetic field of 35 gauss is defined by the number “35,” which indicates the maximum strength of neodymium. It’s possible to achieve field strengths up to 10,000 – 12,000 gauss (1. Virginia Beach. Price - Chart - Historical Data - News. Coeff. x 0. 15,829. The addition of cobalt, terbium, dysprosium, and other elements to the sintered neodymium iron boron raw materials. + Highest Energy of All Permanent Magnets. Please contact Arnold. 0. Neodymium magnets are the strongest type of permanent magnet available. 47 for 100 to 999 items and save 20%. 1. NdFeB Magnet. On returning to normal operating temperatures below 176 degrees F, there is an irreversible loss in magnetic strength and permanent damage. Small magnets are used in the production of jewellery and for jewellery clasps. These magnets can then sliced into smaller magnets or ground to tighter tolerances. High energy for size. For n42 and n52 magnet strength under different sizes, we can refer to the theoretical data from The Original K&J Magnet Calculator. Alnico magnets are permanent magnets made of aluminum, nickel, and cobalt. For example, a disc-shaped magnet. x 0. The shape of a magnet also plays a role in its strength. They are assigned the values 35, 38, 40, 42, 45, 48, 50 and 52 with a prefix lettering, N (neodymium). By comparison, a refrigerator magnet rates about 50. N35 Neodymium Disc Magnet: Superior Strength in a Compact Size. All neodymium magnets have both a south and north pole as shown in the illustrations below. 13% this year. Although the maximum possible energy product is calculated in to be N64, it is unlikely such high strengths of Neodymium will be achievable in the near future. Additional info. It is a measure of magnets strength rating. 5 1. The number comes from an actual material property, the Maximum Energy Product of the magnet material, expressed in MGOe (Mega Gauss Oersteds). It is a measure of magnets strength rating. The pull strength is the highest possible holding power of a magnet, measured in kilograms. The number that follows is a little more technical because it represents the maximum energy. Hundreds of uses: household, industrial, and commercial. Our collection of small and large Neodymium magnets are susceptible to demagnetization at elevated temperatures. 4 teslas. The magnetic field is the tendency for a magnetic force to be induced on moving charged particles in the. The number comes from the Maximum Energy Product of the magnet material, expressed in MGOe (Mega Gauss Oersteds). N42 Neodymium Disc Magnet - 5/32 in. Neodymium magnets in the UK are the strongest commercially available magnets, meaning that they can lift objects many times their weight. Stock & Custom Magnets; Magnets Manufacturing;50mm dia x 12mm thick x 6mm hole Coarse Pole Limpet Magnet - 50kg Pull. It provides information about the magnetic field strength. DASH is a fellow named Dan (Lenny here) who is world famous for his perfect t-jet and AFX bodies. The Original K&J Magnet Calculator. They are widely used as. their strength. 0 - 1. (Field Strength) (PermeanceCoeff 1) di B Hd + = (oersteds). The lower NdFeB magnet grades are no longer made and the range now starts at around N30 or N33. While N52 magnets have a strength of 52 MGOe, a magnet made to work in any direction might only achieve 10-12 MGOe. $3. Magnetic characteristics distribution charts of FB Series Transition of material group development. Each one is unique, and there’s no simple formula for translating a system from one magnet type into the system for another. 17 Jun 2019. At today’s price of $124. BuyMagnets. In general, higher numbers correlate with a stronger magnet. Actual measured and calculated values for a grade 27 neodymium -iron-boron magnet are shown below. Neodymium alloys are used to make high-strength neodymium magnets, a powerful permanent magnet. Easy to use badge magnets made with neodymium magnets for affixing name tags & business cards at conferences, meetings, tradeshows and events. It is a method of measuring a magnet’s max strength & the limit of that magnet’s holding power. Neodymium magnets are permanent magnets (i. The bar chart shows the magnetic power (MGOe) of each type of magnet. For further information on bespoke magnet assemblies and magnet designs, please contact us via: Phone: +44 (0) 1442 875081. Neodymium is a ductile and malleable silvery white metal. Characteristic: Units; C // C. N42 grade offers a high performance. Grade N42 magnets have a Br of 13,200 Gauss, while N52 magnets can be as high as 14,800 Gauss. Neodymium (NdFeB) magnets are incredibly strong and have a maximum strength (BHmax) from 30 MGOe to 55 MGOe. In every wind turbine and generator you will find one or more incredibly strong magnets. This huge difference means that the N52 magnets have around 49% more energy than that of the N35 magnets. Shop our huge selection of high-quality magnets. At first4magnets. N48 – The most popular neodymium magnet grade offering a good balance of magnetic strength and value. Diametrically Magnetized Examples include D82DIA and D48DIA. Nd-Pr is seen growing at 7% per annum. Press these magnets into a drilled. It has a diameter of 8mm and a height of 2mm and is axially magnetised through the 2mm thickness. Simplified, the rotating shaft of a wind turbine is connected to one or more strong magnets, usually neodymium magnets, these magnets turn. Neodymium, of course, is a rare-earth element featuring the atomic number 60. 5 to 1 Tesla. Watch on. From magnetic map holders for holding large maps or charts in the field, to strong magnetic bulldog clips for organizing offices or homes, neodymium hook magnets for hanging commercial signs, installing trade show displays or countersunk magnets for mounting hardware, we offer a wide range of heavy-duty magnets for high-strength. The grade of the metal, surface condition and angle of pull all have an impact on the pull strength. 11% of their magnetism when the temperature rises by 1 ℃. Of Thermal Expansion 3. High temperature grades of neodymium. Samarium Cobalt Block Magnet. Align the magnets: Place the strong magnet’s north pole against the weakened magnet’s. For reference, a small N45 3 x 2mm Neodymium disc has a strength of attraction of 0,18 Kg, whereas a N48 has 0,25 Kg (39% more !!!). Each individual layer of Nickel and Copper are 5-7 μm thick. e. Despite their mega strength, Neodymium magnets are considered to have a low maximum temperature resistance. 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. At room temperatures, NdFeB magnets exhibit the highest properties of all magnet materials. 99. 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. Common permanent magnet magnets on the market mainly include NdFeB Magnet, SmCo magnet, AlNiCo magnet, and ferrite magnet. Pull the scale upward very slowly while maintaining a perpendicular angle. Measuring Magnetic Field Strength of Neodymium Magnets Using a Gaussmeter. Conveniently browse neodymium magnets by usage. With proper care and protection, neodymium magnets can last for many years or even decades, retaining a significant portion of their original magnetic strength. This one is 4mm, type 3, and has 7 braided core yarns that enables it to have a minimum strength of 550lbs making it a perfect compliment to the 500lbs magnet. 2. fastest shipping! No Minimum Order! K&J Magnetics, Inc. 75 pounds). So, the simple answer to the question. + Moderate Temperature Stability. 25 D and the distance from the pole face (X) is 100% D. To put that in perspective, the Earth's magnetic field is about 0. Strength: 1kg-3kg, Magnet size: Height:12mm. Available. Super Strong Rare Earth Neodymium Arc & Wedge Magnets. F335-N52. Neodymium (Nd), chemical element, a rare-earth metal of the lanthanide series of the periodic table. When classifying neodymium magnets according to their magnetic strength, the grades come into view. D x 1/8 in. The neodymium magnets in a typical EV weigh up to 3kg (6 lb), but even at 1/12th of that weight, a neodymium magnet can support steel as heavy as prizefighter Tyson Fury, and will have about 18. The strength of rare earth magnets. In general, higher numbers indicate a stronger magnet. These magnets can have a. Have a look at this simple chart with the adhesive force of magnets with different sizes, grades and materials: The majority of the magnets sold by Amazing Magnets are Neodymium Iron Boron (NdFeB) , and most of our stock products are Grade N40 . Moisture Chart For Corn. The addition of cobalt, terbium, dysprosium, and other elements to the sintered neodymium iron boron raw materials. CALL 585. It refers to the maximum magnetic energy that the material can be stored. Magnetic induction B (also known as magnetic flux density) has the SI unit tesla [T or Wb/m 2 ]. 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. Alnico 5 gives that open, airy top-end sparkle that we’re so used to. But among all the types of magnets available, neodymium magnets tend to lose their strength less. Neodymium magnets (also known as “NdFeB”, “Neo” or “NIB” magnets), are strong permanent magnets made from an alloy of neodymium, iron & boron. Often measured in. N42 – Low to mid-range neodymium magnet with lower magnetic properties than N45 and N48. 9. N42 grade offers a high performance at an. 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. Most neodymium magnets are plated with nickel. Blocks. 38-41. Neo Magnets are the strongest magnets. The flux consists of moving or spinning electrically charged particles invisible to the eye. 88kg. A round neodymium magnet with a diameter of 20mm and a thickness of 3mm has a pull force of approximately 3. The epoxy magnet with no visible rust tested just fine. 060'' Thk. While N52 magnets have a strength of 52 MGOe, a magnet made to work in any direction might only achieve 10-12 MGOe. Identifying a neodymium magnet involves examining its visual appearance, magnetic strength, weight, size, resistance to heat, and price. e. Neodymium magnets are a member of the Rare Earth magnet family and are the most powerful permanent magnets in the world. The grade is a good indicator of the strength of a magnet. The main phase of this material is Nd 2 Fe 14 B and its maximum energy products achieved 280kJ/m3 at that time. 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). Every type of rare earth magnet, whether neodymium, AlNiCo, or something else, has its own alphanumerical system for classifying strength. 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. NdFeB Magnet NdFeB magnet is a tetragonal crystal composed of neodymium, iron and boron (Nd2Fe14B). thick - 0. Unit Price Each. Neodymium N52 Disk Magnet 1mm x 1mm 1000pcs. A round neodymium magnet with a diameter of 20mm and a thickness of 2mm has a pull force of approximately 2. Master Magnetics is your Magnet Source for Neodymium Rare Earth Magnets. In magnetic jewelry we can count the number of magnets, measure the. Home; Call Us; 0345 528 0474;. NdFeB can be used at low temperature but at around 135 Kelvin (-138 degrees C), the direction of magnetisation is. e. 67. Generally speaking, the higher the grade, the stronger the magnet. These magnets can have a gauss rating over 14,000. They are also referred to as NdFeB magnets, or NIB, because they are composed mainly of Neodymium (Nd), Iron (Fe) and Boron (B). The strongest magnet ever constructed weighed 34 tons and was 22 feet tall. * Orders of any size. Magnet n42 is a neodymium magnet strength rating. Magnetic badges are a great alternative to traditional pin badges, they are high in magnetic strength, durable, lightweight, and they will not damage or. Inhalation overexposure of iron dust may cause siderosis, a benign pneumoconiosis. Each magnet has a grade, which typically denotes its strength. 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. This small loss is fully recoverable on cooling, providing that the maximum operating temperature is not exceeded. Pull force, also known as magnetic pull, is a measure of the strength of a magnet's magnetic field. Key Features: Material: Premium N35 Neodymium. Neodymium Magnets vs. There are eight standard grades of these permanent rare earth magnets. 6 ± 2 x 10 6 J/m 3, which is ten times larger than cobalt nanoparticles, and magnetic properties comparable to some rare earth. Many online calculators we've seen determine pull force based on a theoretical calculation of the flux density. Remember to follow safety precautions when handling these powerful. A low coercivity grade Neodymium magnet may begin to lose strength if heated. They have an elaborate manufacturing process of vacuum melting, milling, pressing and sintering. What makes them so unique? Learn more in our comprehensive guide now. 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. Very high resistance to demagnetization. Neodymium Disc Magnet 15mm x 5mm N42. 1 15 10 Compressive 700 Tensile 35 Young's modulus (GPa) 200equations or charts; for example, see Rollin J. Neodymium magnets are permanent magnets (i. For a comparison of neodymium material grades, please see our chart of material properties. Blackmore, (TRIUMF, 1985) and A. Magnets tend to lose their strength over time. The surface. Bunting designs and manufactures a wide range of magnets and magnetic assemblies . The latest Auto World pancake cars already have dot neo magnets, in my opinion they spoil a lot of the fun for adult drivers. You need to work through a variety of neodymium magnets to find a balance between size and pull strength. They also have many uses in creative applications such as models and theatre design, furniture making, exhibition stands, and packaging. Neodymium magnets are. Neodymium magnets (also known as "NdFeB", "Neo" or "NIB" magnets) are permanent magnets made of neodymium, iron & boron. x 0. The grades of. 2 Super II's. Besides, in 10 years, a neodymium magnet might not lose up to 10% of its strength. All Pull Force values based on extensive testing in our laboratory. which the magnet is operating. N35 is, therefore, the weakest and n50 the strongest of the neodymium magnets. $egingroup$ The only reason you need the field strength of the magnets is to compute the voltage that should be generated in the coils. For example, N52 magnets may have a slightly higher maximum operating temperature than. Fill in all of the blank calculation fields, click the calculate button and the results will appear. Neodymium N38 Countersunk Ring Magnets – 15x5x5mm 9MAGNR15X10. Neodymium Magnets vs. Fill in all of the blank calculation fields, click the calculate button and the results will appear. (763) 540-9497 - Pull force is the force required to pull a magnet from a steel plate vertically. 99 $19. Neodymium magnets operate better at colder temperatures. With a few assumptions, flux density (in Gauss) can be related to. 2. Neodymium alloys are used to make high-strength neodymium magnets, a powerful permanent magnet. Sagawa, Hadjipanayis, and Croat independently discovered Nd-Fe-B based rare earth permanent magnets almost simultaneously in 1984. Neodymium is a ductile and malleable silvery white metal. Neodymium magnets are permanent magnets (i. 1. The higher the Curie temperature of the magnet, the higher the working temperature and the better the temperature stability. A round neodymium magnet with a diameter of 20mm and a thickness of 3mm has a pull force of approximately 3. In one tesla-unit there is 10. Good in ambient temperature. An N42 magnet has a maximum energy product of 42 MGOe, while an N52 magnet has a maximum energy product of 52 MGOe. For the Thanksgiving Day holiday, orders placed after 1:00PM EST on Wednesday, 11/22/2023, will be shipped on Monday, 11/27/2023. 118'' Thk. N35 Neodymium Magnets: N35 is a grade of neodymium magnet, which is measuring the strength of the magnetic field it produces. 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. The grades that can usually be purchased range from N30 to N52, because low-grade neodymium magnets are usually no longer produced. When designing a magnetic solution, physical strength is not always the most important factor and each material has its own unique. The available standard neodymium grades are N35, N38, N40, N42, N45, N48, N50, N52 and N55. This magnet produced from rare earth. While electromagnets. Small neodymium magnet disk (1 mm x 1 mm) axially magnetized with high magnetic strength (N52). However, it is important to keep rare earth magnets away from young children. 7, 10. Despite offering substantial magnetic strength, they still fall short compared to neodymium 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. For neodymium magnets, this temperature is very high, typically above 900°C to 1000°C. Start simple. There are some suffix letters following the grade such as M, H or SH. Topics Covered in this Guide. Gap: This Gap Calculator estimates the magnetic field strength between two neodymium magnets separated by a small gap. 44 for 1 to 9 items. The Surface Field is the strength of the magnetic field measured right at the surface of the. The higher the Curie temperature of the magnet, the higher the working temperature and the better the temperature stability. Neodymium magnets are also commonly used in engineering and manufacturing where compact size and maximum strength are required. 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. 5, 11. STRONGEST MAGNETS. Unit Conversion Calculator: This calculator deals with converting key magnetic units. Neodymium Historical Price Movement. Neodymium rare earth magnets (NdFeb) vary in shape and size, and the different shapes each have their own corresponding magnetization direction options. This magnetic power is known as maximum energy product / MGOe (Mega Gauss Oesteds). (Typical ranges for standard Eriez Rare Earth (RE) magnet circuits are up to 150 degrees Fahrenheit, 150 to 250, 250 to 400 and maximum 850 degrees Fahrenheit. In stock and ready to ship. NOTE: This calculator is currently a beta version and is intended only for reference. Neodymium magnets are certainly usable at these low temperatures, but the loss in strength below -150°C should be planned for. 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. 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. Neodymium decreased 330,000 CNY/T or 34. For maximum energy product, convert megaGaussOersteds (MGOe) to. High strength N45 Grade Neodymium is used to produce this disc-shaped magnet. The bar chart shows the magnetic power (MGOe) of each type of magnet. Performance in your application under your specific test conditions may vary. Sensor & Relay Magnets. This step allows the scale to only measure the magnetic force. The grades generally available to buy, range from N30 to N52 as lower grades are generally no longer manufactured. Electrical machines using permanent magnets are more efficient than those without. Enter Quantity: Add to cart. The pull strength is the highest possible holding power of a magnet, measured in kilograms. 15 for 10 to 99 items and save 20%. Prices are GST Incl. 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. When a permanent magnet is fully magnetized, its magnetic. They are made from inexpensive raw materials and are very economical to produce. Since 2004, AEMagnet has been a trusted neodymium magnet supplier. 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). It all starts with the letter "N", representing neodymium. In simpler terms, the higher the number, the stronger the magnet’s magnetic field. 5 Teslas. Disc and Cylinder magnets can be axially or diametrically magnetized. 2388. 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. Neodymium (Nd), chemical element, a rare-earth metal of the lanthanide series of the periodic table. As an example, these plated high-temperature N35 neodymium disc magnets can often be found in oil filters to separate. A rare earth magnet will generate a much stronger magnetic field output and is also generally harder to. N52 magnets are the strongest neodymium magnets you’ll come. Neodymium Grades. 59 lb. Magnetic strength is most commonly measured in two ways: grade and. Each one is unique, and there’s no. 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. ,LimitedStandard car magnet sizes and guidelinesIndex of /images/img_oth Car magnets – rainbow printingMagnetic strength chart. 472'' Dia. 98buy 100+ items and save 27%. + Moderate Mechanical Strength. Mounting Magnets are strong neodymium magnets that are set inside a steel cup or channel. They are a relatively new invention and have only recently become affordable for everyday use. Click here to go to our Repelling Force Magnet Calculator that shows the repelling force generated between two same-sized magnets. A magnet grade is a good measure of the strength of a magnet. Magnet physical properties is a good reference value when you choosing a magnet material from NdFeB, SmCo, AlNiCo and Ferrite Magnets. 5 times Ferrite magnets). 95 Add to cart. Getting started; Neodymium Magnet Strength Rating; Neodymium Magnet Strength Rating - China Manufacturers, Factory, Suppliers. Small neodymium magnet disk (1 mm x 1 mm) axially magnetized with high magnetic strength (N52). Order online for. N50 is the highest readily available grade. At this point, a neodymium magnet’s direction of magnetism will alter, resulting in a loss of performance between 10 and 20%. A magnet is strongest. They have an elaborate manufacturing process of vacuum melting, milling, pressing and sintering. This chart only applies to disc/cylinder magnets with the diameter and thickness shown. You can measure the overall magnetic strength of a magnet (called the magnetic moment) or its local strength (called the magnetization for short). Neodymium Iron Boron - Magnetic Properties. Sintered Neodymium Magnets. R x 12. Another way to understand it is that Permeability is the ability of a material to become magnetized when exposed to a magnetic field. Neodymium magnets are often. 5–0. 70 per kg on Jan 1st 2021 it has increased +13. This is a special glass for goggles used during glass blowing and welding. So, when defining your magnet need, keep in mind that the higher the number,. Saturation Field Strength. DIYMAG specialized in the research, development, application and production of high-qualified magnets and magnetic assemblies. Jun 10, 2009. At Stanford Magnets, we do not make any compromises on quality. The first and most popular are the Neodymium Magnets affixed inside a steel housing. 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. In terms of raw magnetic strength, neodymium magnets often outshine other types. Magnet Applications. It is possible that some hard drives use N52 magnets but in general there is no way to tell. N rating. 5 products. Home // Access Hardware // Understanding Neodymium Magnets and Why Grade Matters // Understanding. O. The majority of the magnets sold by Amazing Magnets are. 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. They are also great to be used as magnet fasters for. A Neodymium (Rare Earth) magnet Grade (for example, N42) is an accurate guide to the strength of a magnet. Maximum energy product, also referred to as BHmax is. 15 Sep 2023. 85 kilo-Gauss for Ceramic magnets. Test results shown to allow comparison between plating. Around 10% of permanent magnets (4 kt neodymium) were used for wind turbines, notably offshore turbines and Chinese onshore turbines. 22% in value. Here I would like to mention an experiment done by. To put their strength into perspective, they can produce magnetic fields with up to 1. Generally speaking, higher grade numbers indicate a stronger or more powerful magnet. The fragments that come off can stick magnetically back onto the magnet creating a “dirty” magnet. ¸ 9. Higher values mean stronger magnets. Buy neodymium magnets in over 250 different shapes and sizes, including strong N42, N52, and N55 magnets. N42 grade offers a high performance at an economical price. 2:17 types, with higher H ci values, offer greater inherent stability than the 1:5 types. That “N” number relates to their maximum energy product, a measure of strength expressed in MegaGaussOersteds, or MGOe. $0. 763-540-9497 – Learn about the different types of magnets, their properties and common uses from US Magnetix and help determine if a neodymium or ceramic magnet is right for your project. Model: A-POLE-1. All Neodymium magnet grades begin with the letter ‘N’, representing ‘Neo’ or Neodymium. The major application of neodymium is in high-strength. This magnet is identified by AMF Magnetics part number C-D5H5- N35 . 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. Best Sellers in Rare Earth Magnets. I. *compiled from “General Safety Considerations for the Installation and Operation of Superconducting Magnet Systems”, Rev. Licensed MAGCRAFT® Brand Rare Earth Magnets. Neodymium magnet strength. kA/M.