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. Neodymium alloys are used to make high-strength neodymium magnets, a powerful permanent magnet. 49. In general, the higher the maximum energy product value, the greater the magnetic field the magnet will generate in a particular application. Neodymium alloys are used to make high-strength neodymium magnets, a powerful permanent magnet. Neo magnets can be found in a variety of applications including high performance motors, brushless DC motors, magnetic separation, magnetic resonance imaging, sensors, switches. A round neodymium magnet with a diameter of 15mm and a thickness of 4mm has a pull force of about 2. The distance between the magnets and the track rails is significant because the downforce is proportional to the square of the distance between them. Applications: These magnetic badge attachments are used for all types of name badges. Depending on the grade of the magnet, the heat will demagnetize the magnet. Flexible sheets are often used for point of sale and advertising, particularly for cars. Most refrigerator magnets have a gauss rating of 50; The strength of a small magnet made of iron is equal to about 100 gauss; Rare earth magnets can have a gauss rating of 12,500 or more; More Information About Gauss Neodymium magnets are the strongest type of magnets that are permanent in nature. A magnetic bracelet using 3000 gauss magnets with 20 - 3mm magnets is half the strength of a bracelet with 20 - 5mm magnets. To make sense of neodymium magnet grades and tables, you’ll want to wrap your head around the following parameters: Maximum Energy Product (BHmax): Measured in Mega-Gauss-Oersteds (MGOe), it represents the magnet’s energy density or magnetic strength. Although this distance is commonly called an air gap, anything that comes between the magnet material and its ferrous mate will cause a variance in strength, including paint, coatings, paper. The addition of cobalt, terbium, dysprosium, and other elements to the sintered neodymium iron boron raw materials. 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. Learn more about demagnetization (BH) curves for rare earth neodymium magnets. Keep in mind that "ease of magnetization" is different from "strength of magnetization" because most materials that become easily magnetized are not strong magnets. The Cost: If budget is a concern, ferrite magnets are more affordable. After cooling, most of the magnetic force can return to the original level, which is reversible. For example, a neodymium magnet of grade N42 has a strength of 42MGOe. A round neodymium magnet with a diameter of 15mm and a thickness of 1. Our high-quality Rare Earth Magnets are made from alloys of rare-earth elements. 007”) on the edge. See Our Range of Neodymium Magnets. Basially, N35 grade, N38 grade, N40 grade and N42 grade, these are the most common grade for most applications. At room temperatures, NdFeB magnets exhibit the highest properties of all magnet materials. Neodymium magnets can reach a listed pull force of 1. 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. The material and grade of a magnet refer to a set of properties that ultimately yield the magnet’s performance. The big difference is in the optimum temperatures for each magnet. 6kg. 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. BuyMagnets. This magnet produced from rare earth. e. 2 1. 90%. They have an elaborate manufacturing process of vacuum melting, milling, pressing and sintering. 5mm has a pull force of about 1. ARC4025. 118'' Thk. Science Project Magnets. x 0. In simpler terms, the higher the number, the stronger the magnet’s magnetic field. 22% in value. 02 to 0. Neodymium magnets are the strongest available magnet material with remanence (Br) between 10. The bar chart shows the magnetic power (MGOe) of each type of magnet. Fill in all of the blank calculation fields, click the calculate button and the results will appear. Locate the poles on a magnet. F888-646-4. A Neodymium magnet, also known as NdFeB or Neo magnet, is the strongest known type of permanent magnet. Depending on where you have your sources from, there are different facts on this subject on the. Alnico magnets come in several variations with different amounts of aluminum, nickel, and cobalt. You can either use a small magnet with a higher energy product or a large magnet with a lower energy product for the same application. Larger numbers mean a higher surface field strength, so for a given size of magnet, one with a larger number will be stronger. £24. For example, a neodymium magnet of grade N42 has a strength of 42MGOe. The magnetic field is the tendency for a magnetic force to be induced on moving charged particles in the. A neodymium magnet in there, even an un-magnetized one, might only be a little better than an air core. 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. A round neodymium magnet with a diameter of 15mm and a thickness of 4mm has a pull force of about 2. 5 to 0. For example, you are going to be driving your car during a storm. Besides, in 10 years, a neodymium magnet might not lose up to 10% of its strength. Neodymium, of course, is a rare-earth element featuring the atomic number 60. These ferrite magnets have a medium magnetic strength ratio and they can be used at high temperatures. 7 Other uses of neodymium include making a specialized glass used in. 19lbs Pull. 0 kilo-Gauss, and 2. The shape of a magnet also plays a role in its strength. Our site includes a history of magnets , a glossary of magnetic terms used. 25" Thk. The main phase of Neodymium magnet is Nd 2 Fe 14 B and maximum energy products achieved 280kJ/m 3 at that time. Total demand for Rare Earth Oxides is seen growing at 4% per annum by CRU. 75 pounds). 10-100. pull. Licensed MAGCRAFT® Brand Rare Earth Magnets. 95 Add to cart. For a comparison of neodymium material grades, please see our chart of material properties. In terms of raw magnetic strength, neodymium magnets often outshine other types. Quantity. 1 15 10 Compressive 700 Tensile 35 Young's modulus (GPa) 200equations or charts; for example, see Rollin J. Press-Fit Encased Magnets. The magnet grade, or N rating, refers to the Maximum Energy Product of the material from which the magnet is made; it refers to the maximum strength the material can be magnetized to hold permanently. Generally speaking, the higher the grade, the stronger the magnet. Read more about where neodymium magnets are used in. The largest Rare Earth component in permanent magnets is Neodymium, comprising 27% by mass of Nd2Fe14B magnetic material. Magnet physical properties is a good reference value when you choosing a magnet material from NdFeB, SmCo, AlNiCo and Ferrite Magnets. 65kg. Magnet physical properties is a good reference value when you choosing a magnet material from NdFeB, SmCo, AlNiCo and Ferrite Magnets. Test results shown to allow comparison between plating options. 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. The strength of neodymium magnets also enables the creation of a strong magnetic field in a smaller space. “N52” is the grade assigned to neodymium magnets with an energy product of 52 MGOe. The number in the magnet grade refers to the strongest point of the material’s B-H curve, or its maximum energy product. The basic idea is to make a magnet float by holding it up with the repelling force from another magnet. Even at the boiling point of liquid nitrogen, -196°C, there's still roughly 87% of the field strength you would find at room temperature. e. They are commonly used in applications such as. Disc and Cylinder magnets can be axially or diametrically magnetized. 5 times Ferrite magnets). $0. Attributes of Neodymium Material. they generate their own magnetic field) made from an alloy of the metallic elements neodymium, iron and boron. christian beliefs. Neodymium compounds are of low to moderate toxicity, yet its toxicity has not been thoroughly investigated. Adams Hard Magnet Materials Catalog updated 2020. These magnets can have a gauss rating over 14,000. The necessary. Neodymium magnets are permanent magnets (i. 0. The two most common rare earth magnets are Neodymium (Nd. Neodymium magnets were first produced in response to the high price of samarium-cobalt magnets, giving need to identify an economical, high. Our Superiority: Customized is Available! * T/T, L/C, Paypal and other payment accepted. Neodymium has one of the highest magnetic properties of any magnetic alloy. totalElement is your go-to supplier for powerful neodymium rare earth magnets for sale. 56% since the beginning of 2023, according to trading on a contract for difference (CFD) that tracks the benchmark market for this commodity. Magnets are stronger when the number is higher. 59 lb. They were developed in the 1950s and have since become popular for many applications due to their affordability and durability. The grade N42 means a neodymium magnet has a maximum energy product of 42 MGOe. This means, that the power is stronger than the combined power of more than 4000 strong refrigerator magnets. 3 1. In magnetic jewelry we can count the number of magnets, measure the. Neodymium Disc Magnet 15mm x 5mm N42. That's the property that tends to redirect the electromagnet's field through the core. This will certainly damage any standard Neodymium Rare Earth Tube Magnets or Magnetic Separators. References. Magnets tend to lose their strength over time. 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. The magnetic length. It is advised to not put magnets in conditions of mechanical stress e. Coeff. By comparison, a refrigerator magnet rates about 50. This magnetic power is known as maximum energy product / MGOe (Mega Gauss Oesteds). In conclusion, the strength comparison between electromagnets and neodymium magnets reveals a captivating interplay of dynamic adaptability and unwavering permanence. The size of a neodymium magnet directly impacts its strength. O. 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. The Relationship between the Working Temperature and the Curie Temperature of a Magnet. Frenergy Magnets offer a wide, inexpensive, and high-quality range of Neodymium Rare Earth Magnets to customers both in Australia and overseas, ranging in grades from N35 to N52, and in pull force from 58grams to 1000kg. The magnetic field of a neodymium magnet reaches about 1. 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. NdFeB can be used at low temperature but at around 135 Kelvin (-138 degrees C), the direction of magnetisation is. It is an N45 grade rare earth magnet. fastest shipping! No Minimum Order! K&J Magnetics, Inc. Choose from our selection of round magnets, including neodymium magnets, encased neodymium magnets, and more. 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. Select Material Grades for Neodymium Magnets When you are trying to figure out which neodymium magnets to select for your design needs, you. In terms of power, a rare earth magnet is about 2-7 times stronger than a standard magnet. 2 °C; −425. Neodymium magnets are sensitive to heat. Gap: This Gap Calculator estimates the magnetic field strength between two neodymium magnets separated by a small gap. Fingers are quickly caught between them which can cause blood blisters or cuts. Generally speaking, neodymium magnets range from N35 to N55 in grade. Neodymium Magnets Products are divided into two major categories: Sintered Neodymium Magnet and. 11% of their magnetism for every 1 degree celsius rise in temperature. The compound also has a high saturation. The grades can also be read as 35 MGOe, 38 MGOe, 42 MGOe and so on. (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. Neodymium magnets are. The main phase of this material is Nd 2 Fe 14 B and its maximum energy products achieved 280kJ/m3 at that time. Add to cart. Diametrically Magnetized Examples include D82DIA and D48DIA. N42 Neodymium Rod Magnet - 3/4 in. The magnet is 0. This attribute paves the way for developing compact, slim speakers without compromising their sound output. Introducing the strongest magnets available at first4magnets! N52 grade neodymium was the strongest magnetic. The necessary. Moisture Chart For Corn. Magnet n42 is a neodymium magnet strength rating. 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. What is the pull force of N35 grade neodymium magnets? 1. Magnetic characteristics distribution charts of NEOREC Series. The number comes from the Maximum Energy Product of the magnet material, expressed in MGOe (Mega Gauss Oersteds). 11% of their magnetism when the temperature rises by 1 ℃. The higher the grade, or N number, the incrementa. 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. Block magnets are defined by three dimensions: Length, Width and Thickness. 99. 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. Larger magnets (30 cm3+) can crush fingers and break bones. From £1. Conclusion. A magnetic field of 35 gauss is defined by the number “35,” which indicates the maximum strength of neodymium. kA/M. The grades that can usually be purchased range from N30 to N52, because low-grade neodymium magnets are usually no longer produced. The magnet with Ni-Cu-Ni coating will have a much higher pull force than a magnet with plastic coating. 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. The n42 magnet pull strength depends on neodymium magnet sizes, the plating and how it is used. But the rate at which different types of magnets lose strength varies. This little coil, smaller than a can of soda, helped scientists achieve a new world record for a continuous DC magnetic field at 45. They have an elaborate manufacturing process of vacuum melting, milling, pressing and sintering. 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. Simplified, the rotating shaft of a wind turbine is connected to one or more strong magnets, usually neodymium magnets, these magnets turn. For even higher temperatures, N50M, N48H and N42SH are popular for industrial application. Neodymium magnets are. Enter Quantity: Add to cart. W/m. The pull strength a neodymium magnet can achieve is the strongest of the permanent magnets you can buy. It is the ratio of the magnetic induction to the magnetizing field as a function of the field in a material. This distance may be closely related to a. 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. They are widely used as. Roughly 2/3 of a neodymium magnet is composed of iron. For magnetic flux strength and magnetic force (H), convert from Oersteds (Oe) into Amps per meter (A/m). The magnetic field is the tendency for a magnetic force to be induced on moving charged particles in the presence of these. The first and most popular are the Neodymium Magnets affixed inside a steel housing. Alnico magnets come in several variations with different amounts of aluminum, nickel, and cobalt. Neodymium decreased 330,000 CNY/T or 34. These are the strongest of the rare earth magnets and used in virtually every industry. Car magneticsCar custom dia magnet magnets Car magnets magnet sizesCar magnet custom oval magnets. It shows the minimum distance to get below 5 gauss for many disc / cylinder magnet sizes. 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). With a few assumptions, flux density (in Gauss) can be related to. But the rate at which different types of magnets lose strength varies. They are assigned the values 35, 38, 40, 42, 45, 48, 50. N42 is not as strong as N52, for example. It is a method of measuring a magnet’s max strength & the limit of that magnet’s holding power. In Fender-style pickups, it has the best balance of extended lows, mids, and highs. Each magnet has a grade, which typically denotes its strength. 10% Off. com, we do not compromise on quality, the majority of our magnets are grade N42 or above, making them 20% more. 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. 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. Better performance than 2x1x1/2" magnets 22. N50 is the highest readily available grade. 5mm thick magnets. A higher N is stronger. These extra-strong Neodymium N38 Bar Magnets offer high strength over a relatively large area, making them great for practical mechanical applications. It all starts with the letter "N", representing neodymium. Stock No. In other words, a motor or device using N52 magnet (s) would have much higher performance than that using N35 magnet (s), and/or it would be much smaller and lighter. + Moderate Mechanical Strength. Neodymium (NdFeB) magnets are incredibly strong and have a maximum strength (BHmax) from 30 MGOe to 55 MGOe. Waterproof hook magnet, great for hanging decor. Strength: 1kg-3kg, Magnet size: Height:12mm. These magnets can then sliced into smaller magnets or ground to tighter tolerances. 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). *compiled from “General Safety Considerations for the Installation and Operation of Superconducting Magnet Systems”, Rev. D x 1/8 in. Unfortunately, this simplification. Ceramic magnets are typically manufactured through sintering, similar to neodymium magnets. 5 tesla. N52 is possible but only in certain sizes. Additionally, these particles have a magnetic anisotropy of 4. £4. Quick view Add to Compare. There are four main types of permanent magnets – neodymium, samarium cobalt, alnico and ferrite. 38-41. 44 for 1 to 9 items. R 11. 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 dust and salts are very irritating to the eyes. 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. Finally, we offer rubber encased magnets. 50. Others: The Breakdown. Aquarium Magnets. Every type of rare earth magnet, whether neodymium, AlNiCo, or something else, has its own alphanumerical system for classifying strength. The neodymium iron boron magnets have the strongest resistance to demagnetization of any magnet material and it is generally estimated that it may take over five hundred years before they start to see noticeable loss of magnetic strength. –. Parker's Advances in Permanent Magnetism (John Wiley and Sons, 1990). 21kg Pull. Neodymium magnets are permanent magnets (i. Gap: This Gap Calculator estimates the magnetic field strength between two neodymium magnets separated by a small gap. But among all the types of magnets available, neodymium magnets tend to lose their strength less. The Gold and Silver plating layers are 1-2 μm thick. 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. OK. Magnetic field drops off as the cube of the distance from a dipole source. x 0. Wear gloves when handling larger magnets and always handle with care. Measurements taken off the center axis will vary. The fragments that come off can stick magnetically back onto the magnet creating a “dirty” magnet. Neodymium magnets have a strength grade associated with them, from N30 to N52. (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. 2. The addition of cobalt, terbium, dysprosium, and other elements to the sintered neodymium iron boron raw materials. $20. Waterproof hook magnet, great for hanging decor. Double the N number and you get. –. The magnetic field of a neodymium magnet can reach up to. They are widely used as. Resulting Force (lbf): Neodymium Magnetic Pull Force Calculator calculates expected pull forces based on a single magne testing. Other common materials such as SmCo, AlNiCo, and Ferrite magnets are also listed as these can be produced to order as custom magnets. berkhamsted@buntingmagnetics. Most neodymium magnets are plated with. (mm)Manufacturing Methods & Finishes. Other than that, there are only minor differences between the two grades. Neodymium Magnets Features & Characteristics. 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. N42 Neodymium Disc Magnet - 5/32 in. It is a measure of magnets strength rating. So, the magnetic energy the combination of neodymium, iron, and boron can store, makes the alloy very magnetic. 5/cm³ Vickers Hardness 600Hv Tensile Strength 8. This will certainly damage any standard Neodymium Rare Earth Tube Magnets or Magnetic Separators. Please contact Arnold. For an in-depth explanation of how this calculator works, check out our Gap Calculator article. Strength magnets neodymium safety info neodymium cylindrical neodymium strength magnet neodymium grades magnetic reference properties following table their neodymium magnets carolina neodymium thicker. If everything else is equal, a magnet with a BHmax that's 10% higher will have about a 10% higher pull force. Neodymium Iron Boron Overview Key Benefits • Very high strength • Relatively low cost (by weight about 20 time Ferrite magnets, by "Dollars per BHmax" about 1. 5 °F). Tweet. Box Package, SCB250. 00. Zeller & J. All Surface Field values are at the magnet surface, in the center of the axis of magnetization. NdFeB. The higher the grade, or N number, the incrementa. China Magnets Source provides a wide range of NdFeB magnet. At first4magnets. A magnet grade is a good measure of the strength of a magnet. Among the non-rare-earth permanent magnets invented so far, only two are in large-scale production: ferrites and another type called Alnico (aluminum nickel cobalt). Ceramic magnets have a lower magnetic strength compared to neodymium magnets. Neodymium magnets are often assembled into products using strong adhesives such as Loctite 325. Box Package, SCD156. 6 Neodymium magnets are also used in wind turbines, aeronau cs and space. 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. Magnetized. So, the simple answer to the question. A round neodymium magnet with a diameter of 20mm and a thickness of 3mm has a pull force of approximately 3. If you measure the one you have (or the pocket the missing one used to occupy), you can probably find that size online pretty easily. 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. Stock & Custom Magnets; Magnets Manufacturing;50mm dia x 12mm thick x 6mm hole Coarse Pole Limpet Magnet - 50kg Pull. They are also great to be used as magnet fasters for. 2:17 types, with higher H ci values, offer greater inherent stability than the 1:5 types. An N42 magnet has a maximum energy product of 42 MGOe, while an N52 magnet has a maximum energy product of 52 MGOe. 15,829. $2. Neodymium (also known as "NdFeb", "NIB" or "Neo") disc magnets are the most powerful rare-earth magnets available today. 8 kilo-Gauss. The exact ingredients depend on the grade or strength of magnet being produced. Holiday magnetic thumbtack kits. Flexural Strength-0. + High Coercive Strength. Additional info. But among all the types of magnets available, neodymium magnets tend to lose their strength less. they generate their own magnetic field) made from an alloy of the metallic elements neodymium, iron and boron. New in 2020, we’ve added more curves, and a coatings chart to assist with corrosion. Compared to its price of $109. Our collection of small and large Neodymium magnets are susceptible to demagnetization at elevated temperatures. 20mm O. To put that in perspective, the Earth's magnetic field is about 0. Magnets tend to lose their strength over time. Neodymium magnets, which require rare earth elements, tend to cost significantly more. Magnetic induction B (also known as magnetic flux density) has the SI unit tesla [T or Wb/m 2 ]. 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. 2 Neodymium iron boron (NdFeB) magnets: These are the most powerful. Within the working temperature range, neodymium magnets lose 0. New York, United States , June 27, 2023 (GLOBE NEWSWIRE) -- The Global Neodymium Magnet Market Size is to grow from USD 2. 1 High performance neodymium magnet for IPM motor NEOREC Series Neodymium Magnets Magnetic Materials Information. Neodymium magnets are graded by their maximum energy product (BH)max with N52 grade neodymium providing the greatest magnetic performance and N35 being the weakest. Sintered Neodymium-Iron-Boron Magnets. As an example, these plated high-temperature N35 neodymium disc magnets can often be found in oil filters to separate. Grades & Materials - We carry a large inventory of licensed, neodymium magnet materials in both standard and premium grades for reduced production and lead times. Generally speaking, neodymium magnets range from N35 to N55 in grade. 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. e. They are assigned the values 35, 38, 40, 42, 45, 48, 50 and 52 with a prefix lettering, N (neodymium). 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. N38 – Low-grade neodymium magnet. 5mm I. The moment the neodymium magnets were released, the can of Coke was instantly crushed by a powerful force, scattering the Coke all over the place. magnet strength should not be compared with armature OHMs of resistance. I. N42 grade offers a high performance at an economical price. For example, a 10mm diameter by 3mm thick N42 neodymium magnet has a Gauss rating of 3600 while the same magnet but 5mm thick has a Gauss rating of 5100. Neodymium Iron Boron Overview Key Benefits • Very high strength • Relatively low cost (by weight about 20 time Ferrite magnets, by "Dollars per BHmax" about 1. A ferrite or ceramic magnet usually. 2-0. Salt Spray testing conducted with a 5% NaCl solution, at. The NdFeB magnets are the strongest type of magnet commercially available and are manufactured in a wide. Rare-earth magnets are made of neodymium iron boron (NdFeB). The grade of the metal, surface condition and angle of pull all have an impact on the pull strength.