neodymium magnets strength chart. 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. neodymium magnets strength chart

 
 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 weightneodymium magnets strength chart The strength of these magnets has to do with the electron array in the neodymium, the rare earth they are made from

Neodymium alloys are used to make high-strength neodymium magnets, a powerful permanent magnet. Great for projects that require. Every type of rare earth magnet, whether neodymium, AlNiCo, or something else, has its own alphanumerical system for classifying strength. They are commonly used in applications such as. Our neodymium mounting magnet selection features – countersunk, counterbored, threaded male and female studs, and hook magnets in standard and metric sizes. Nd 2 Fe 14 B or Neodymium-Iron-Boron magnets can be sintered or bonded. Neodymium magnets are available in a wide variety of grades such as N42, N52 and N42SH. This attribute paves the way for developing compact, slim speakers without compromising their sound output. In terms of power, a rare earth magnet is about 2-7 times stronger than a standard magnet. The major application of neodymium is in high-strength permanent magnets based on Nd 2 Fe 14 B that are used in high-performance electric motors and generators,. Make sure that all contact surfaces are clean and dry prior to bonding. Neodymium magnets in the UK are the strongest commercially available magnets, meaning that they can lift objects many times their weight. The pull strength is the highest possible holding power of a magnet, measured in kilograms. 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. At first4magnets. berkhamsted@buntingmagnetics. MAGCRAFT® Neodymium Magnets Strong Neodymium Magnets Rare Earth K&J Magnetics. F335-N52. The thickness of flexible magnetic sheets usually ranges from 0. For example, N52 magnets may have a slightly higher maximum operating temperature than. For further information on bespoke magnet assemblies and magnet designs, please contact us via: Phone: +44 (0) 1442 875081. Neodymium (Nd), chemical element, a rare-earth metal of the lanthanide series of the periodic table. All Surface Field values are at the magnet surface, in the center of the axis of magnetization. #1. This is the primary indicator of a magnets ‘strength’. Magnet neodymium magnets temperature chart strength magnetic low performance n52 rare earth temperaturesNeodymium magnet grades Neodymium magnets grades permanentSafety info – magneticpoetry. But the rate at which different types of magnets lose strength varies. powerful magnets. 8kg. 33. This force only increases with the magnet’s size. Adams Hard Magnet Materials Catalog updated 2020. 11% of their magnetism when the temperature rises by 1 ℃. Sintered Neodymium-Iron-Boron Magnets. Generally speaking, the higher the grade, the stronger the magnet. The majority of the magnets sold by Amazing Magnets are. Saturation Field Strength. Neodymium magnets are typically composed of one -third neodymium, along with iron and boron. The pull force from a magnet varies with the grade, or “N” number. Our inventory contains a large sampling of the different grades, however, if you need a different grade, shape or size. It is a measure of magnets strength rating. White Running Marathon Race Bib Number Magnets. Holding Power: 7 lbs. The basic principle is that the higher the number the stronger the magnet. Neodymium magnets are considered part of the family of rare earth magnets because their main element is the rare earth. 6 ± 2 x 10 6 J/m 3, which is ten times larger than cobalt nanoparticles, and magnetic properties comparable to some rare earth. It is the most commonly used neodymium magnets among N rating. Reviewed by Osman Hafeji, Technical Support Engineer (March 2021) Neodymium magnets are permanent magnets (i. Understanding the magnet grades is an important factor in choosing the correct magnet for the application. Finally, we offer rubber encased magnets. While N52 magnets have a strength of 52 MGOe, a magnet made to work in any direction might only achieve 10-12 MGOe. 15 Sep 2023. All Surface Field values are at the magnet surface, in the center of the axis of magnetization. At room temperatures, NdFeB magnets exhibit the highest properties of all magnet materials. EV and wind turbines together accounted for around one third of the permanent magnet use. 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. Product Description. Parker's Advances in Permanent Magnetism (John Wiley and Sons, 1990). WARNING: KEEP OUT OF REACH OF CHILDREN. Axially Magnetized Examples include D82 and D48. 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. These ferrite magnets have a medium magnetic strength ratio and they can be used at high temperatures. 5mm I. Neodymium magnets (also known as "NdFeB", "Neo" or "NIB" magnets) are permanent magnets made of neodymium, iron & boron. This magnet is grade N45, with N standing for neodymium and 45 referring to magnetic strength. Getting started; Neodymium Magnet Strength Rating; Neodymium Magnet Strength Rating - China Manufacturers, Factory, Suppliers. Not only are they more potent, but they are also more compact, offering superior performance in a smaller package—a. It all starts with the letter "N", representing neodymium. Magnets made with neodymium are the strongest of the rare-earth magnets. Neodymium magnets can reach a listed pull force of 1. From £6. N45 – Mid-range neodymium magnet. x 0. Neodymium magnets in the UK are the strongest commercially available magnets, meaning that they can lift objects many times their weight. ,LimitedStandard car magnet sizes and guidelinesIndex of /images/img_oth Car magnets – rainbow printingMagnetic strength chart. Quick view Add to Compare. Permanent magnets are graded by the maximum energy the magnet produces. 1. The number comes from an actual material property, the Maximum Energy Product of the magnet material, expressed in MGOe (Mega Gauss Oersteds). 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. Magnets are stronger when the number is higher. A 2-gram (0. In stock and ready to ship. 49), so we want to identify them. R x 12. Measurements taken off the center axis will vary. B = the magnetic field strength at the center,. The grades of. This calculator only considers discs and cylinders that are magnetized along the cylindrical axis. Price - Chart - Historical Data - News. Measuring and Inspecting. Magnet n42 is a neodymium magnet strength rating. A magnetic field of 35 gauss is defined by the number “35,” which indicates the maximum strength of neodymium. Our collection of small and large Neodymium magnets are susceptible to demagnetization at elevated temperatures. £24. Watch on. If you have any questions feel free to give us a call (888-727-3327). 5/cm³ Vickers Hardness 600Hv Tensile Strength 8. Stock No. It was discovered in 1885 by chemist Carl Auer von. Master Magnetics is your Magnet Source for Neodymium Rare Earth Magnets. A ferrite or ceramic magnet usually creates a weak. It provides information about the strength of the magnet, how hard it is to demagnetize, and how a magnet's shape (or. Different designs call for different grades of magnets. Neodymium magnet strength. Select Material Grades for Neodymium Magnets When you are trying to figure out which neodymium magnets to select for your design needs, you. It is the ratio of the magnetic induction to the magnetizing field as a function of the field in a material. 1 15 10 Compressive 700 Tensile 35 Young's modulus (GPa) 200equations or charts; for example, see Rollin J. Imagine you have two neodymium magnets: one is an N35 magnet, and the other is an N52 magnet. + Moderate Temperature Stability. 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. Magnets tend to lose their strength over time. About the Author. Very high resistance to demagnetization. It is an N45 grade rare earth magnet. Magnet Applications. 59 for 1 to 99 items. STRONGEST MAGNETS. A Neodymium magnet, also known as NdFeB or Neo magnet, is the strongest known type of permanent magnet. In this case, the N52 magnet is stronger than the N35 magnet. Most neodymium magnets are plated with. Compression Strength: 950 MPa (137,800 psi) Tensile Strength: 80 MPa (11,600 psi) Vickers Hardness (Hv) 560-600: Young's Modulus: 160 GPa (23,200 ksi) Recoil. 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). Fish stirring bars out of containers using the magnetic end of these retrievers. e. 10-100. Despite offering substantial magnetic strength, they still fall short compared to neodymium magnets. 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. Temp. Fingers are quickly caught between them which can cause blood blisters or cuts. Neo Magnets are the strongest magnets. Other than that, there are only minor differences between the two grades. This distance may be closely related to a minimum safe operating distance for pacemakers and ICDs. 2 Neodymium iron boron (NdFeB) magnets: These are the most powerful. 88lbs Pull. Neodymium magnets are often. Available in disc and cylinder shapes, Neodymium magnets have magnetic properties that far exceed all other permanent magnet materials. 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. This small loss is fully recoverable on cooling, providing that the maximum operating temperature is not exceeded. Getting started; neodymium magnets strength; neodymium magnets strength - Manufacturers, Suppliers, Factory from China We have now numerous great personnel members good at advertising, QC, and working with kinds of troublesome dilemma from the creation course of action for neodymium magnets strength, Irregular Motor Magnets,. A round neodymium magnet with a diameter of 20mm and a thickness of 3mm has a pull force of approximately 3. A round neodymium magnet with a diameter of 20mm and a thickness of 3mm has a pull force of approximately 3. Strength magnets neodymium safety info. For n42 and n52 magnet strength under different sizes, we can refer to the theoretical data from The Original K&J Magnet Calculator. Neodymium magnets (also known as “NdFeB”, “Neo” or “NIB” magnets), are strong permanent magnets made from an alloy of neodymium, iron & boron. Neodymium is one of the more reactive lanthanides—a group of similar metallic elements numbered 57-71 on the periodic table. You can measure the magnetic field in teslas or the magnetic flux in webers or Teslas • m 2 ("tesla square meters"). 87 lbs. The main phase of Neodymium magnet is Nd 2 Fe 14 B and maximum energy products achieved 280kJ/m 3 at that time. Common permanent magnet magnets on the market mainly include NdFeB Magnet, SmCo magnet, AlNiCo magnet, and ferrite magnet. In terms of raw magnetic strength, neodymium magnets often outshine other types. Alnico 5: This is by far our most widely used guitar pickup magnet. 4 teslas. Neodymium magnets are rare-earth magnet materials with the highest magnetic properties. Start simple. Sharp edges from grinding or slicing and dicing magnets are more fragile and have an increased tendency to chip. x 0. Inhalation overexposure of iron dust may cause siderosis, a benign pneumoconiosis. 88kg. The bar chart shows the magnetic power (MGOe) of each type of magnet. 4 products. Conveniently browse neodymium magnets by usage. $1. At the temperatures shown the material's BH Curve does not develop a knee and is still fairly linear. ¸ 4. 85 kilo-Gauss for Ceramic magnets. 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. For an in-depth explanation of how this calculator works, check out our Gap Calculator article. 98buy 100+ items and save 27%. There are eight standard grades of these permanent rare earth magnets. Unit Price Each. Copper and titanium may be added to increase magnetic strength. The two most common rare earth magnets are Neodymium (Nd. Composed of neodymium, iron & boron, these strong permanent magnets are the most powerful class of magnet materials commercially available today. Low working temperature for heat applications, but higher levels of heat resistance materials are being. 59 lb. They are made from an alloy of neodymium, iron, and boron. Aquarium Magnets. Previously, grades of ferrite magnets where labelled with the letter ‘C’ then a number, for example C1, C2, C3. They are a relatively new invention and have only recently become affordable for everyday use. 8 kilo-Gauss. 04% in value. Samarium Cobalt magnets have Br values between 8. Please contact Arnold. Typically, the higher the magnet grade, the greater the corresponding strength of the magnet. Magnets tend to lose their strength over time. 2:17 types, with higher H ci values, offer greater inherent stability than the 1:5 types. Choose from our selection of strong magnets, including neodymium magnets, encased neodymium magnets, and more. New in 2020, we’ve added more curves, and a coatings chart to assist with corrosion. Neodymium has one of the highest magnetic properties of any magnetic alloy. D x 1/8 in. Compare. Neodymium magnets are permanent magnets (i. $54. 22% in value. 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 round neodymium magnet with a diameter of 15mm and a thickness of 4mm has a pull force of about 2. which the magnet is operating. You’re probably wondering why some neodymium magnets are graded as “N52” while others are not. $egingroup$ The only reason you need the field strength of the magnets is to compute the voltage that should be generated in the coils. Box Package, SCB250. There are other N ratings of neodymium magnets. WPH-LG. Explore. Read more about these two types of magnets. Nd-Pr is seen growing at 7% per annum. The Original K&J Magnet Calculator. + High Coercive Strength. Performance in your application under your specific test conditions may vary. 2 Customers are advised to consult us on any application involving temperatures near to 150°C. “N52” is the grade assigned to neodymium magnets with an energy product of 52 MGOe. . Neodymium magnets are a combination of Neodymium (Nd), Iron (Fe) and Boron (B), and are also referred to as NdFeB or Neo. Grade N42 magnets have a Br of 13,200 Gauss, while N52 magnets can be as high as 14,800 Gauss. Neodymium Disc Magnet 15mm x 5mm N42. At Stanford Magnets, we do not make any compromises on quality. 24 hours. At first4magnets. Technical information about different grades of super strong neodymium magnets. The main phase of this material is Nd 2 Fe 14 B and its maximum energy products achieved 280kJ/m3 at that time. They're produced from rare earth minerals, which are among the world's most powerful things. Every type of rare earth magnet, whether neodymium, AlNiCo, or something else, has its own alphanumerical system for classifying strength. The pull strength a neodymium magnet can achieve is the strongest of the permanent magnets you can buy. 11 for 1 to 9 items. High-temperature neodymium. 100 - Above. That “N” number relates to their maximum energy product, a measure of strength expressed in MegaGaussOersteds, or MGOe. However, it is important to keep rare earth magnets away from young children. Portable Strong Magnet Strap Belt Tools Holder Screws Nuts Nails. In general, higher numbers indicate a stronger magnet. In simpler terms, the higher the number, the stronger the magnet’s magnetic field. Ceramic magnets are typically manufactured through sintering, similar to neodymium magnets. Buy neodymium magnets in over 250 different shapes and sizes, including strong N42, N52, and N55 magnets. Topics Covered in this Guide. About. Neodymium magnets, also known as NdFeB or Neo magnets, are the most widely used rare earth magnets. The chemical compound of ferrite magnets is SrO-6 (Fe2O3), a combination of strontium carbonate and iron oxide; some grades also include other chemicals such as cobalt and lanthanum to improve magnetic performance. Our Superiority: Customized is Available! * T/T, L/C, Paypal and other payment accepted. 5 tesla. Generally speaking, neodymium magnets range from N35 to N55 in grade. Standard temperature neodymium magnets will begin to lose strength if they are heated above their maximum operating temperature, which is 180°F (80°C). $0. Best Sellers in Rare Earth Magnets. Test results shown to allow comparison between plating. 70 per kg on Jan 1st 2021 it has increased +14. Salt Spray testing conducted with a 5% NaCl solution, at. Magnet Shape. 302-326. You can measure the overall magnetic strength of a magnet (called the magnetic moment) or its local strength (called the magnetization for short). Currently, all known strong magnets contain rare earth (RE) elements, and they are core components of a wide range of applications. The two-digit number that follows signifies the maximum energy product, measured in Mega-Gauss Oersteds (MGOe). e. Strong N52 grade neodymium rare earth magnets, available in discs, cylinders, blocks and rings. Getting started; Neodymium Magnet Strength Rating; Neodymium Magnet Strength Rating - China Manufacturers, Factory, Suppliers. 52. This is about 200 times the strength of the Earth’s magnetic field. 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. Neodymium Magnets Products are divided into two major categories: Sintered Neodymium Magnet and. [1] One tesla is equal to 10 4 gauss. Demagnetization curve is a very important indicator of magnetic characteristic. No amount of externally applied magnetic field will bring the magnet's strength back. For example, a neodymium magnet of grade N42 has a strength of 42MGOe. Most of our magnets are grade N42 or above. View 24. 04%. 50 x 50 x 25mm Ultra high Performance N52 Neodymium Magnet - 116kg Pull. 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. The grade is a good indicator of the strength of a magnet. These magnets are widely used in products like microphones, professional loudspeakers, in-ear headphones, high-performance hobby DC electric motors, and computer hard disks, where low magnet mass (or volume) or strong magnetic fields are required. they generate their own magnetic field) made from an alloy of the metallic elements neodymium, iron and boron. So, the simple answer to the question of if. In general, the higher the maximum energy product value, the greater the magnetic field the magnet will generate in a particular application. The strength of neodymium magnets also enables the creation of a strong magnetic field in a smaller space. . To put that in perspective, the Earth's magnetic field is about 0. Product Description. Not only are they more potent, but they are also more compact, offering superior performance in a smaller package—a. A ferrite or ceramic magnet usually. Circular ring magnets are disc magnets with a plain hole through the centre of the magnet. #8. In 1984, Sagawa, Hadjipanayis, and Croat independently discovered Neodymium magnet nearly at the same time. e. When classifying neodymium magnets according to their magnetic strength, the grades come into view. Grade magnets 1st anchor chart 2nd science magnet activities. Locate the poles on a magnet. Permeability is typically represented by the (italicized) Greek letter μ. $20. Neuron specific enolase which is the determinant of neuronal damage and S100 blood levels. 20. Add to cart. It is advised to not put magnets in conditions of mechanical stress e. Specifications of Neodymium Magnets, Physical and Mechanical Characteristics, Magnetic Characteristics, Thermal Characteristics, Plating Characteristics . The necessary. pull. Nacho Magnets Strength Neodymium Motor Magnets Stock Aurora red/green 11. A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements. Advantages: All metal design, strong and sturdy. Neodymium N38 Countersunk Ring Magnets – 15x5x5mm 9MAGNR15X10. Nolen (National Superconducting Cyclotron Laboratory, 09/87) demonstrated SmCo having a better performance, with Sm 2 Co 17 offering 2-40 times. Generally speaking, neodymium magnets range from N35 to N55 in grade. The 12,000 Gauss neodymium grate magnet option has a pull strength of 13. 10% Off. The magnet with Ni-Cu-Ni coating will have a much higher pull force than a magnet with plastic coating. 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. In one tesla-unit there is 10. The Neodymium Rare Earth magnets do not perform as well as SmCo Rare Earth magnets. 21 for 10 to 99 items and save 10%. This will have a strong magnetic field that will attract all kinds of debris and things on the road such as rocks and twigs. This magnet is identified by AMF Magnetics part number C-D5H5- N35 . Gap: This Gap Calculator estimates the magnetic field strength between two neodymium magnets separated by a small gap. WARNING: KEEP OUT OF REACH OF CHILDREN. –. And it is more completely and precisely than a single number like pull force or surface field. Neodymium decreased 330,000 CNY/T or 34. fastest shipping! No Minimum Order! K&J Magnetics, Inc. Larger magnets (30 cm3+) can crush fingers and break bones. 150 // 130 ┴. Let's walk through a few examples to illustrate how to use these charts, and what it all means. Neo Magnets are the strongest magnets in the world – the higher the grade, the. There are four main types of permanent magnets – neodymium, samarium cobalt, alnico and ferrite. For the Thanksgiving Day holiday, orders placed after 1:00PM EST on Wednesday, 11/22/2023, will be shipped on Monday, 11/27/2023. N50 is the highest readily available grade. –. The edge radius also provides a moreAt today’s price of $125. A round neodymium magnet with a diameter of 15mm and a thickness of 1. 15,829. Unit Price Each. Due to their high magnetic strength and relatively low-cost, neodymium magnets are. Magnetic. Neodymium magnets are permanent magnets (i. This is often referred to as the magnet’s coercivity and you can read more about this here. Sensor & Relay Magnets. 5 and 14. Check Price On Amazon (USA, CA, & UK) - Click Here. 10 Pcs of N48 Neodymium Magnets 1/8 inch Cube. Besides the relatively lower Curie temperature, Nd 2 Fe 14 B is an. It is the force that a magnet can exert on an object made of ferromagnetic material, such as iron, nickel, or cobalt. Neodymium magnets are a member of the Rare Earth magnet family and are the most powerful permanent magnets in the world. Because of their lightweight, strength and the consistency of their magnetization, Neodymium Magnets have become a popular choice for a wide variety of applications, from loudspeakers to magnetic therapy jewelry. It refers to the maximum magnetic energy that the material can be stored. Neodymium compounds are of low to moderate toxicity, yet its toxicity has not been thoroughly investigated. The distance between your magnet and the steel substrate to which it is trying to attract can make an almost unbelievable difference in pull strength. 1. Generally speaking, neodymium magnets range from N35 to N55 in grade. Additional info. Align the magnets: Place the strong magnet’s north pole against the weakened magnet’s. Polarity Testers. N42 – Low to mid-range neodymium magnet with lower magnetic properties than N45 and N48. Unfortunately, this simplification. 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. A magnet is strongest. like steel or iron. $3. The north pole is indicated in red, and the south pole in indicated in gray. We use Alnico 5 in all of our Strat, Tele, and Bass pickups. The grades that can usually be purchased range from N30 to N52, because low-grade neodymium magnets are usually no longer produced. I have a hard drive magnet stuck to my fridge and given its strength I would say its a rare earth neodymium magnet. Inhalation overexposure of iron dust may cause siderosis, a benign pneumoconiosis. 49. com, we do not compromise on quality, the majority of our magnets are grade N42 or above, making them 20% more. It is hard to pull apart both N35 and N52 magnets, so it is tough to tell which is which just by pulling them apart. Key Features: Material: Premium N35 Neodymium. Buy Neodymium Magnets online with Bunting – eMagnets™. Check out our full collection here. 38. The magnetic field generated by 3T MRI (also known as 3 Tesla MRI) is made up of three layers of 3-tesla magnets. Neodymium Grades. N38 – Low-grade neodymium magnet. When designing a magnetic solution, physical strength is not always the most important factor and each material has its own unique. Magnetization Options. DIYMAG specialized in the research, development, application and production of high-qualified magnets and magnetic assemblies. Sintered Neodymium Magnets. The grades that can usually be purchased range from N30 to N52, because low-grade neodymium magnets are usually no longer produced. 947. 5 1. 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. Magnets are stronger when the number is higher. A 3-tesla magnetic field. For example, N ratings range from the lowest strength, N27 to N64, with the most commonly used magnets being a N48 and N64 being theoretically the strongest grade. Neodymium magnets are labeled with a grade, an N rating that signifies a magnet’s level of strength. LOVIMAG Super Strong Neodymium Disc Magnets, Powerful Rare Earth Magnets with Double-Sided Adhesive for Fridge, DIY, Building, Scientific, Craft, and Office Magnets - 1. Click Picture For Full Description and Wholesale Quantity Price Break Discounts. Neodymium magnets in the UK are the strongest commercially available magnets, meaning that they can lift objects many times their weight. Magnetized. • Magnetic field gradient is much stronger compared to non-shielded,These units represent the magnetic field strength at a particular point in space and are commonly used to measure the strength of neodymium magnets. 00 per kg, neodymium changed –40. They include countersunk holes or threaded features that allow for mounting with standard hardware (nuts and bolts), as well as various hooks. Levitation Magnets. By comparison, a refrigerator magnet rates about 50. The NdFeB magnets are the strongest type of magnet commercially available and are manufactured in a wide. It provides information about the magnetic field strength.