0769-23388351
Toggle Navigation
What type of magnet has a magnetic flux density of 4000G? This question likely interests many people. Below is an explanation from Fu from Carichi Magnets, hoping it proves helpful.
A magnetic flux density of 4000G refers to the strength of a magnetic field. G is the unit for gauss, so 4000G indicates a magnetic field strength of 4000 gauss, equivalent to 0.4 Tesla (T). This intensity typically corresponds to very strong permanent magnets, generally achievable only by rare earth magnets such as neodymium iron boron magnets or samarium cobalt magnets. These are powerful magnets used in industrial and scientific research applications.
The accompanying image shows a high-performance rare earth circular magnet with a surface magnetic flux density exceeding 4000 Gauss.
Why not ferrite magnets?
Ferrite magnets are a class of permanent magnet materials based on iron oxide, primarily divided into hard ferrite and soft ferrite. Their maximum remanence and maximum energy product are significantly lower than those of rare-earth permanent magnets. The magnetic flux density of ordinary ferrite permanent magnets ranges from several hundred to approximately 1600 Gauss.
Key point: A magnetic flux density of 4000 G at a point indicates a strong magnetic field there, but it does not equate to the magnet itself having a remanence value of 4000 G. While these concepts are related, they are fundamentally different. For instance, a higher residual magnetization (BR) typically correlates with greater magnetic energy product density in a magnet, but it cannot be directly equated with magnetic flux density. Magnetic flux density describes the distribution of magnetism around the magnet, whereas residual magnetization (Br) refers to the internal quantity within the magnet.
Highly Related Articles;
Customers from the United States, the United Kingdom, Australia, Japan, Poland and other customers are looking for ferrite cylindrical magnets. Welcome to contact the Courage magnet manufacturer. Our company is located in Dongguan, China. There are many ready-made sizes and low prices. Like the main picture...
The sample is a small-sized Y35 ferrite magnetic block with a specification of 3 × 1.3 × 4mm, magnetized along the length direction, and a surface magnetic field of about 1300 Gauss....
This is a very small rectangular ferrite block magnet, measuring 2.45 mm in length and 1 mm in both width and height. It is magnetised along its length and is barely noticeable when held in the hand....
7.4x6x5mm Ferrite Small Block Magnet Introduction，Material: Hard Ferrite (Ceramic)，Shape: Block / Rectangle / Bar，Coating: No Coating，Grade (Chinese Stardard): Y30，Operating temperature: -40°C to 250°C，Delivery time: 7-15 days，Magnetization direction: thickness....
U-shaped neodymium magnets are a type of high-performance permanent magnet material with a structure resembling the letter ‘U’. Manufactured from sintered neodymium-iron-boron, they are characterised by high magnetic energy product....
This is a radial 4-pole ring (Hollow cylinder) magnet, the material is bonded NdFeB, with high magnetic performance, the size is 16mm outer diameter, inner hole 5mm, height 20mm, surface gray epoxy treatment, suitable for water pump motor...
This product is a 4-pole ring magnet, injection-molded ferrite material, the sample size is 22mm outer diameter, 7mm inner diameter, 4mm thickness, 2 N poles and 2 S poles, mainly used for push rod motors, magnetic induction devices, encoders, etc.,...
This is a radial 2 pole circular magnet designed specifically for magnetic encoder chips. It is made of sintered neodymium-iron-boron with N35 grade performance and is suitable for standard environments....