In general, the higher the maximum energy product value, the greater the magnetic field the magnet will generate in a particular application. Strength magnets neodymium safety info. 8 Compressive (MPa ) 1100 Tensile 74 Young's modulus GPa 170 VickersMagnetic Materials Information. Neodymium Grades A Neodymium (Rare Earth) magnets Grade (eg:N42) is an accurate guide to the strength of a magnet. Neodymium magnets are available in a wide variety of grades such as N42, N52 and N42SH. Neodymium magnets are permanent magnets (i. In addition to their high magnetic strength, they are. (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. W. 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. The bar chart shows the magnetic power (MGOe) of each type of 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. The small magnet has a pull force of 0. kA/M. 04 per kg, then this rare earth metal has gained +77. 6kg. 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. The necessary. 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. These magnets can then sliced into smaller magnets or ground to tighter tolerances. N45 – Mid-range neodymium magnet. 1. Available in disc and cylinder shapes, Neodymium magnets have magnetic properties that far exceed all other permanent magnet materials. Rare-earth magnets are made of neodymium iron boron (NdFeB). After cooling, most of the magnetic force can return to the original level, which is reversible. 35 for 1 to 9 items. These extra-strong Neodymium N38 Bar Magnets offer high strength over a relatively large area, making them great for practical mechanical applications. Neodymium magnets are sensitive to heat. Magnetic characteristics distribution charts of NEOREC Series 1000 1500 2000 2500 3000 10 15 20 25 30 35 40 (kOe) (kA/m) Intrinsic coercive force H CJ (kA/m) (kG) (T) Residual magnetic flux density Br 15 14 13 12 11 1. 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. National Imports manufactures MAGCRAFT® brand neodymium magnets for science, innovation, engineering, and. The Neodymium Rare Earth magnets do not perform as well as SmCo Rare Earth magnets. Tables of Neodymium Magnet Grades. N52 magnets are approximately 50% stronger than N35 magnets. They are widely used as. List of Magnets by Strength. This distance may be closely related to a. 25 D and the distance from the pole face (X) is 100% D. 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. WPH-LG. Model: A-POLE-1. Select Material Grades for Neodymium Magnets When you are trying to figure out which neodymium magnets to select for your design needs, you. The addition of cobalt, terbium, dysprosium, and other elements to the sintered neodymium iron boron raw materials. The major application of neodymium is in high-strength. Identifying a neodymium magnet involves examining its visual appearance, magnetic strength, weight, size, resistance to heat, and price. You can measure the overall magnetic strength of a magnet (called the magnetic moment) or its local strength (called the magnetization for short). 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. NdFeB Magnet NdFeB magnet is a tetragonal crystal composed of neodymium, iron and boron (Nd2Fe14B). Neodymium dust and salts are very irritating to the eyes. Magnets tend to lose their strength over time. For even higher temperatures, N50M, N48H and N42SH are popular for industrial application. Price. Nd 2 Fe 14 B or Neodymium-Iron-Boron magnets can be sintered or bonded. Press-Fit Encased Magnets. Magnetic Stirring Bar Retrievers. So, the simple answer to the question of if. magnet pull strength: Exposing magnets to high temperatures outside their design range may cause magnets to fail completely or show signs of weakening. e. Neodymium, of course, is a rare-earth element featuring the atomic number 60. The grade without suffix letter has maximum operating temperature 80°C, however N52 & N55 (the highest. 375 inches in diameter byAdjust the scale to zero to cancel the weight of the test piece and spacer. The Surface Field is the strength of the magnetic field measured right at the surface of the magnet. BROWSE CATALOG. Pull the scale upward very slowly while maintaining a perpendicular angle. Besides, in 10 years, a neodymium magnet might not lose up to 10% of its strength. A round neodymium magnet with a diameter of 20mm and a thickness of 3mm has a pull force of approximately 3. What is the pull force of N35 grade neodymium magnets? 1. So, the simple answer to the question. This magnet is identified by AMF Magnetics part number C-D5H5- N35 . com, we do not compromise on quality, the majority of our magnets are grade N42 or above, making them 20% more. Waterproof hook magnet, great for hanging decor. Magnetic Properties. strength MPa) 270 Density (Mg/m3) 7. It was discovered in 1885 by chemist Carl Auer von. A. Saturation Field Strength. Adams Hard Magnet Materials Catalog updated 2020. The Relationship between the Working Temperature and the Curie Temperature of a Magnet. As an example, these plated high-temperature N35 neodymium disc magnets can often be found in oil filters to separate. The latest Auto World pancake cars already have dot neo magnets, in my opinion they spoil a lot of the fun for adult drivers. Our neodymium discs bar, block & cube magnets are sintered for optimal magnetic strength and axially magnetized (the magnetism direction is along the axis of the magnet from the north to the south poles). In this case, the N52 magnet is stronger than the N35 magnet. N42 Neodymium Rod Magnet - 3/4 in. Neodymium magnets are a member of the Rare Earth magnet family and are the most powerful permanent magnets in the world. It provides information about the strength of the magnet, how hard it is to demagnetize, and how a magnet's shape (or. To put the power of two common rare earth magnet grades into perspective, here’s how their strength compares with common grades of other permanent magnets: Magnet (Grade. Align the magnets: Place the strong magnet’s north pole against the weakened magnet’s. Composed of neodymium, iron & boron, these strong permanent magnets are the most powerful class of magnet materials. Magnets tend to lose their strength over time. There are other N ratings of neodymium magnets. 00 in February of 2022. 5/cm³ Vickers Hardness 600Hv Tensile Strength 8. Strength magnets neodymium safety info neodymium cylindrical neodymium strength magnet neodymium grades magnetic reference properties following table their neodymium magnets carolina neodymium thicker. Fill in all of the blank calculation fields, click the calculate button and the results will appear. It provides information about the magnetic field strength. 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. e. That’s a lot weaker! A magnet’s magnetization direction can not be changed once the magnet. Ferrite Magnetic Discs 14 x 8 mm Y30 for Assembling Products or Handcrafts. While N52 magnets have a strength of 52 MGOe, a magnet made to work in any direction might only achieve 10-12 MGOe. W/m. E. Despite their mega strength, Neodymium magnets are considered to have a low maximum temperature resistance. Yes. See Our Range of Neodymium Magnets. Neodymium Iron Boron Magnets (“”Neo””, NdFeB or Neodymium) are made from an alloy containing, amongst others, the elements Neodymium, Iron and Boron (NdFeB). For the Thanksgiving Day holiday, orders placed after 1:00PM EST on Wednesday, 11/22/2023, will be shipped on Monday, 11/27/2023. For magnetic flux strength and magnetic force (H), convert from Oersteds (Oe) into Amps per meter (A/m). Magnets come in many strengths, and you can use a gauss meter to determine the strength of a magnet. 33. 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. 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). 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. The number comes from an actual material property, the Maximum Energy Product of the magnet material, expressed in MGOe (Mega Gauss Oersteds). (763) 540-9497 - Pull force is the force required to pull a magnet from a steel plate vertically. Neodymium magnets are. Every type of rare earth magnet, whether neodymium, AlNiCo, or something else, has its own alphanumerical system for classifying strength. OK. 2. A magnetic field of 35 gauss is defined by the number “35,” which indicates the maximum strength of neodymium. Neodymium N52 Disk Magnet 1mm x 1mm 1000pcs. Historically, Neodymium reached an all time high of 1520000. Neo Magnets are the strongest magnets. Alnico 5: This is by far our most widely used guitar pickup magnet. 83 Billion by 2032, at a Compound. k. Price - Chart - Historical Data - News. For an in-depth explanation of how this calculator works, check out our Gap Calculator article. When classifying neodymium magnets according to their magnetic strength, the grades come into view. You need to work through a variety of neodymium magnets to find a balance between size and pull strength. Neodymium decreased 330,000 CNY/T or 34. Review the typical magnetic and physical properties of Neodymium Magnets in our Permanent Magnet Comparison Chart. 99 $19. Generally speaking, the higher the grade, the stronger the magnet. These magnets can then sliced into smaller magnets or ground to tighter tolerances. N52 is possible but only in certain sizes. Around 10% of permanent magnets (4 kt neodymium) were used for wind turbines, notably offshore turbines and Chinese onshore turbines. You can call us at (800) 330-1432 or send us a message online. 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 flux consists of moving or spinning electrically charged particles invisible to the eye. 385. This disc magnet has the power of N35 grade neodymium alloy and promises durability, consistency, and powerful magnetic strength. If we go back further to Jan 1st 2018, when the cost of neodymium was $70. Dimensions: 1. Total demand for Rare Earth Oxides is seen growing at 4% per annum by CRU. Different designs call for different grades of magnets. STRONGEST MAGNETS. Polarity Testers. 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. How strong is grade N52? - Grade N52 strength is the highest neodymium magnet. Characteristics: Not as brittle as SmCo, but should not be used at temperatures above 300°F, without. x 0. In a pipeline which is cleaned using steam, the temperature will be above 100 degrees C for a period of time. In terms of power, a rare earth magnet is about 2-7 times stronger than a standard magnet. N42 Neodymium Disc Magnet - 5/32 in. 6 5. They are widely used as. A Neodymium (Rare Earth) magnet Grade (for example, N42) is an accurate guide to the strength of a magnet. While K&J Magnetics offers diametrically magnetized magnets, this calculator does not apply to them. In stock and ready to ship. It is the force that a magnet can exert on an object made of ferromagnetic material, such as iron, nickel, or cobalt. Grade N42 magnets have a Br of 13,200 Gauss, while N52 magnets can be as high as 14,800 Gauss. 98buy 100+ items and save 27%. Others: The Breakdown. significantly below neodymium magnets. They are assigned the values 35, 38, 40, 42, 45, 48, 50. Magnetic properties In its pure form, neodymium has magnetic properties—specifically, it is antiferromagnetic —but only at low temperatures, below 19 K (−254. These 15mm diameter 5mm thick Neodymium N38. The magnetic field is the tendency for a magnetic force to be induced on moving charged particles in the. In magnetic jewelry we can count the number of magnets, measure the. Attributes of Neodymium Material. 100 - Above. Add to cart. The magnets are positioned with opposite poles facing one another, so that the magnets are attracting towards one another. e. It refers to the maximum magnetic energy that the material can be stored. Having a gauss magnet strength chart, also known as a gauss rating chart, is very useful if you want to know what kind of things are magnetizing your car. 13% this year. See our Specs page for more Br values for various neodymium magnet grades. Weight. Stock & Custom Magnets; Magnets Manufacturing;50mm dia x 12mm thick x 6mm hole Coarse Pole Limpet Magnet - 50kg Pull. Rare earth samarium-cobalt offers a balance of strength and temperature resistance. Temp. Neodymium is a component, along with praseodymium, of didymium glass. This data sheet covers the standard production range of NdFeB magnets (currently 55 grades) that are commonly. $17. Maximum energy product, also referred to as BHmax is. Neodymium magnets operate better at colder temperatures. 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 !!!). Rare earths have important uses in a number of key applications for multiple advanced technologies in electronics, transportation, energy and. berkhamsted@buntingmagnetics. Of Thermal Expansion 3. D x 1/8 in. 156'' Dia. The Strength of Rare Earth Magnets. Neodymium Disc Magnet 15mm x 5mm N42. Due to their high magnetic strength and relatively low-cost, neodymium magnets are. The necessary. 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. This is the primary indicator of a magnets ‘strength’. Key Features: Material: Premium N35 Neodymium. Generally, larger magnets are more potent than smaller ones, as they have more magnetic material. Dry Erase Board Magnets. 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. Fill in all of the blank calculation fields, click the calculate button and the results will appear. From £4. $2. 55. As a rule Neodymium Magnets lose 0. Many online calculators we've seen determine pull force based on a theoretical calculation of the flux density. Neodymium is one of the more reactive lanthanides—a group of similar metallic elements numbered 57-71 on the periodic table. It has a diameter of 8mm and a height of 2mm and is axially magnetised through the 2mm thickness. 76mm). D x 3/8 in. The surface. First, they placed a can of Coca-Cola between two neodymium magnets. Neodymium magnets in the UK are the strongest commercially available magnets, meaning that they can lift objects many times their weight. 5mm I. Neodymium magnets are a permanent type of Rare Earth Magnet, made from neodymium, iron, boron and other transition elements. Here I would like to mention an experiment done by. –. Composed of neodymium, iron & boron, these strong permanent magnets are the most powerful class of magnet materials commercially available today. 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 compounds are of low to moderate toxicity, yet its toxicity has not been thoroughly investigated. Uses for our Rare Earth Cylinder Magnets : These Neodymium Cylinders are a great versatile product that is suited to. The exact ingredients depend on the grade or strength of magnet being produced. Neodymium Magnets Features & Characteristics. Inspection Mirrors. At first4magnets. Technical information about different grades of super strong neodymium magnets. Neodymium magnets, also known as NdFeB or Neo magnets, are the most widely used rare earth magnets. A magnetic field of 35 gauss is defined by the number “35,” which indicates the maximum strength of neodymium. 5 times Ferrite magnets). 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. 2 Tesla) with small gaps, especially if. This chart only applies to disc/cylinder magnets with the diameter and thickness shown. The magnetic strength of NdFeB magnets is closely related to the change in ambient temperature. Neodymium magnets are. 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. The higher the grade, or N number, the incrementally stronger the magnet will be. After the testing, we found decreases in strength ranging from 0% to 11%. CALL 585. NR191003-LMI. 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 north pole is indicated in red, and the south pole in indicated in gray. In general, higher numbers indicate a stronger magnet. Neodymium magnets are permanent magnets (i. Neodymium magnets (also known as Neo, NdFeB, NIB or super magnets) , a type of rare earth magnets, are the permanent magnets made from neodymium, iron, boron and other rare earth elements. + Moderate Temperature Stability. For the Thanksgiving Day holiday, orders placed after 1:00PM EST on Wednesday, 11/22/2023, will be shipped on Monday, 11/27/2023. This gives the compound the potential to have high coercivity (i. Check Price On Amazon (USA, CA, & UK) - Click Here. WPH-LG. The magnet is made of N45 Grade Neodymium which gives it even stronger. Some of which are N35, N38, N42, N45, and N48. N38 – Low-grade neodymium magnet. Coeff. It is a method of measuring a magnet’s max strength & the limit of that magnet’s holding power. 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. For example, a neodymium magnet of grade N42 has a strength of 42MGOe. The grades that can usually be purchased range from N30 to N52, because low-grade neodymium magnets are usually no longer produced. Locate the poles on a magnet. Remanence (B) – this measures the magnetic field’s strength. Despite offering substantial magnetic strength, they still fall short compared to neodymium magnets. A ferrite or ceramic magnet usually creates a weak. Br, Residual Induction. All neodymium magnets have both a south and north pole as shown in the illustrations below. From $8. With proper care and protection, neodymium magnets can last for many years or even decades, retaining a significant portion of their original magnetic strength. 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. It can be showed by the magnet’s Demagnetization Curve, or BH Curve – the strongest point is (BH)max. The Gold and Silver plating layers are 1-2 μm thick. Check out our full collection here. m 2). A rare earth magnet will generate a much stronger magnetic field output and is also generally harder to. 15 for 10 to 99 items and save 20%. 2388. Choose from our selection of strong magnets, including neodymium magnets, encased neodymium magnets, and more. This huge difference means that the N52 magnets have around 49% more energy than that of the N35 magnets. 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. Magnetic field drops off as the cube of the distance from a dipole source. Magnet grade is the Arabic numerals used to distinguish the different properties. What are Neodymium magnets?. Magnetization Direction for Neodymium Magnets Discs & Cylinders. The most significant difference between N35 and N52 neodymium magnets is their magnetic strength. If everything else is equal, a magnet with a BHmax that's 10% higher will have about a 10% higher pull force. Neodymium Grades. –. N35 Neodymium Disc Magnet: Superior Strength in a Compact Size. 302-326. Generally speaking, higher grade numbers indicate a stronger or more powerful magnet. Neodymium is a ductile and malleable silvery white metal. 30. Larger magnets (30 cm3+) can crush fingers and break bones. N42 – Low to mid-range neodymium magnet with lower magnetic properties than N45 and N48. They are widely used as. The higher the Curie temperature of the magnet, the higher the working temperature and the better the temperature stability. That “N” number relates to their maximum energy product, a measure of strength expressed in MegaGaussOersteds, or MGOe. Copper and titanium may be added to increase magnetic strength. It can be showed by the magnet’s Demagnetization Curve, or BH Curve – the strongest point is (BH)max. 5 °F). These ferrite magnets have a medium magnetic strength ratio and they can be used at high temperatures. 99. 87 lbs. Coeff. 11% of their magnetism for every 1 degree celsius rise in temperature. 3 1. Stock No. Sale. 3 Billion in 2022 to USD 3. The. But the rate at which different types of magnets lose strength varies. According to the National High Magnetic Field Laboratory of Florida State University, a fridge magnet is about 0. In Fender-style pickups, it has the best balance of extended lows, mids, and highs. A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements. Neodymium Magnets Products are divided into two major categories: Sintered Neodymium Magnet and. Your online source for incredibly powerful neodymium magnets. *compiled from “General Safety Considerations for the Installation and Operation of Superconducting Magnet Systems”, Rev. A Neodymium magnet, also known as NdFeB or Neo magnet, is the strongest known type of permanent magnet. Diametrically Magnetized Examples include D82DIA and D48DIA. Within the working temperature range, neodymium magnets lose 0. Each magnet has a grade, which typically denotes its strength. View 24. 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. $0. com, we do not compromise on quality, the majority of our magnets are grade N42 or above, making them 20% more. The grade of the metal, surface condition and angle of pull all have an impact on the pull strength. Order online for. What is a demagnetization curve? Demagnetization curve provides information about the magnetic characteristics of a magnet,It provides information about the strength of the magnet, how hard it is to demagnetize, and how a magnet's shape (or use in a magnetic circuit) affects matters. 44 for 1 to 9 items. 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. There. The Neo magnets are less brittle than SmCo. The higher the Curie temperature of the magnet, the higher the working temperature and the better the temperature stability. g. $0. Neodymium magnets are often assembled into products using strong adhesives such as Loctite 325. A Neodymium (Rare Earth) magnets Grade (eg:N42) is an accurate guide to the strength of a magnet. The primary difference between rare earth magnets and regular magnets is that rare earth magnets are permanent magnets made from rare earth alloys, whereas regular magnets are composed mainly of iron. 10% Off. Neodymium magnets are typically composed of one -third neodymium, along with iron and boron. Sagawa, Hadjipanayis, and Croat independently discovered Nd-Fe-B based rare earth permanent magnets almost simultaneously in 1984. Ideal for home, school, office and shop. Understanding the magnet grades is an important factor in choosing the correct magnet for the application. In fact, according to. In conclusion, the strength comparison between electromagnets and neodymium magnets reveals a captivating interplay of dynamic adaptability and unwavering permanence. In 1984, Sagawa, Hadjipanayis, and Croat independently discovered Neodymium magnet nearly at the same time. Due to their strength, neodymium magnets have found their way into various technologies, from phones and laptops to motors in electric vehicles. For an in-depth explanation of how this calculator works, check out our Gap Calculator article. 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. Moderately priced. 5 to 7. Magnetic. It all starts with the letter "N", representing neodymium. These 15 elements, plus scandium and yttrium, are termed “rare earth elements” (REEs). 00 per kg, neodymium changed –40. F332. Review (3) Set of 100 Magnetic Badge Holder with Steel Back Plate - Name Badge Magnets. Compared with many cheaper N35 grade neodymium magnets, their magnetism is 20% higher. The thickness of flexible magnetic sheets usually ranges from 0. For this reason, neodymium magnets are also known as NdPr magnets. New in 2020, we’ve added more curves, and a coatings chart to assist with corrosion. The magnetic properties of the various grades of neodymium magnets are adjusted by using varying amounts of rare earth elements in the alloy mixture, with each element adjusting the. Description. magnets tumbled (honed) to create a slight radius (0. Product Description. Using neodymium ring magnets (0. For maximum energy product, convert megaGaussOersteds (MGOe) to. Neodymium N38 Countersunk Ring Magnets – 15x5x5mm 9MAGNR15X10. With a few assumptions, flux density (in Gauss) can be related to the expected pull force. Christianity vs. 8" Long X 1/2" Wide X 5/32"Thick. 004” to 0. fastest shipping! No Minimum Order! K&J Magnetics, Inc. All dimensions are in inches. Support the scale perpendicular to the magnet so the test piece just touches the magnet and the magnet attaches itself. It is possible that some hard drives use N52 magnets but in general there is no way to tell. The Cost: If budget is a concern, ferrite magnets are more affordable. From £12. And provides professional design and consultation service according to customers’ requirements. Discover each grades magnetic properties. When designing a magnetic solution, physical strength is not always the most important factor and each material has its own unique. That's the property that tends to redirect the electromagnet's field through the core. The NdFeB magnets may be demagnetised by radiation. White Running Marathon Race Bib Number Magnets. Portable Strong Magnet Strap Belt Tools Holder Screws Nuts Nails. The majority of the magnets sold by Amazing Magnets are. I have a hard drive magnet stuck to my fridge and given its strength I would say its a rare earth neodymium magnet. 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. They are made from an alloy of neodymium, iron, and boron. Neodymium Magnets vs. For magnetic flux density and magnetic induction (B), convert Gauss (G) to Tesla (T). Master Magnetics is your Magnet Source for Neodymium Rare Earth Magnets. 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. The number comes from an actual material property, the Maximum Energy Product of the magnet material, expressed in MGOe (Mega Gauss. Samarium Cobalt Block Magnet. The primary difference between rare earth magnets and regular magnets is that rare earth magnets are permanent magnets made from rare earth alloys, whereas regular magnets are composed mainly of iron. Our magnets are often used in oil pans, on oil filters or elsewhere to filter metal chips out of oil.