The third generation rare earth permanent magnet ndfeb (Nd- fe-b) is the most powerful permanent magnet in the modern magnet, and its potential magnetism can be extremely high. The disadvantage is that the temperature performance is not good, the use of magnetic losses at high temperature is larger, the highest working temperature is lower, generally about 80 degrees Celsius. (the maximum working temperature of special materials after special treatment can reach 200 degrees centigrade and need to be customized!) .
 Magnetic field direction: the cylinder (circular slice) is the plane magnetization (the two end faces are N,S pole), and the rectangular block is the maximum two-sided magnetization (the two sides with the largest area are N,S pole), except marked. Shapes are round, cylindrical, circular, square, square, tile, fan shaped and various forms.

Magnetizing direction: N S pole plane.

Working temperature: maximum 80c.

Process galvanized magnet

Kinds of strong magnetic

Specifications D5 * 2 mm

 Use need to know:

1, the temperature   If the working temperature is higher than that of the magnet plate, the magnet will slowly demagnetize to no magnetism. Be sure to confirm the working temperature and the number suitable for your use before ordering. 
2, environmental   If use the magnet device in sealed condition, can consider to choose the surface plating or white zinc plated magnets, so we can save the cost, if the magnet is exposed to damp air, salt spray conditions, in particular, consider nickel plating surface treatment of the magnet. Magnets should be kept in a dry, constant temperature environment, separated by plastic, wood, cardboard, and foam. Should be away from iron and easy to be magnetized items such as monitor, bank card, computer, TV, mobile phone and so on. 
3. User objects   Regarding environmental protection, for countries with relatively developed countries, such as North America and Europe, users should pay special attention to environmental matters, and the export use must pass the six standards of SGS. For domestic or some less developed countries users, do not consider environmental protection requirements. 
 4. Handling and stacking.     Ndfeb strong magnetic materials, hard, brittle, strong magnetic field, to light (especially the large size and thin), the only, when a strong magnet itself or with any other iron absorption or separation, careful operation impact. Otherwise, it is easy to cause damage to the magnet or finger. Because ndfeb is a polymetallic alloy material with a density of 7.45, it has a heavy and brittle feature. So be careful when carrying the handle, so that it doesn't break. The storage should also keep the environment dry, do not pile directly on the ground, the best mat or place on the shelf.   
5. Guidance notes.     When the magnet is drawn to each other, it is recommended to push the wrong way, not hard to lever. Use your left hand to fix the whole magnet, use your right hand with your index finger and thumb, move out the magnet, and don't immediately throw the moving magnet back into the magnet. Please isolate the magnet immediately. Handle with a light weight, away from the iron or magnetic field (about 16 cm) or paper wrap the paper bag, so that it is safe. If you need to put the magnet back into the magnet, slowly return it and move it close to the edge. The hand must hold the magnet until the magnet has moved in.

The following items need to be understood before purchasing the ndfeb magnet:         
1. This kind of magnet, which is sold by yiwu hao magnetic materials factory, belongs to nd-fe-boron rare earth permanent magnet, which belongs to the powerful magnet, and is the magnet with the highest commercial performance. The best and strongest magnetic material is a well-deserved strong magnetism. Because of its excellent magnetic energy is called \"magneto, please be assured to purchase, careful use.         
 2. The types of specifications produced by our company are round, square, circular, shaped, trapezoidal, tile, spherical, irregular, and other neodymium iron and boron strong magnets, which can be customized to produce. All sizes of our magnets are measured in millimeters.        
     【 1 】 generally expressed in D diameter circular size (due to belong to the special symbol for the convenience of the majority to use D instead of Φ), such as D10X1MM represents is 10 mm in diameter, 1 mm is the thickness of the magnet. X is the sign of the mathematical symbol.        
     [2] the size of the square is the length X width and the height is generally F for the square. Such as F50x25x13MM, said is square magnet is 50 mm long, wide is 25 mm, thickness is 13 mm, usually the default last a digital representation of the square magnet magnetization direction, such as F50x25x13 squares, magnetization direction is the direction of the 13 mm, is also highly direction of magnetization. NS is on the two largest surfaces, which is 50x25.        
     [3] the size of the ring is expressed as the height of the outside diameter DX internal diameter DX. For example, the ring magnet, D32XD18X6, has an outer diameter of 32 millimeters and an inner diameter of 18 millimeters and a height of 6 millimeters. Height is also called thickness. At present, the ring is also divided into straight hole and sunk head hole. The hole of the straight hole is directly punched into the hole, while the sunk head hole is divided into large hole and small hole, and the hole depth and hole depth are commonly known as screw holes. 
Iii. Our company can produce many kinds of ndfeb magnets, as follows:
       N35 N38 N40 N42 N45 N48 N50 N52                     The maximum working temperature is 80 degrees.   
           35 m. 38 m. 40 m 42 m. 45 m. 48 m 50 m.                         The maximum working temperature is 100 degrees.   
           33 h 35 h 38 h 40 h 42 h 45 h 48 h.                         Maximum working temperature: 120 degrees.   
           30SH 33SH 35SH 40SH 40SH 42SH.                               The maximum working temperature is 150 degrees.   
           30UH, 33UH, 35UH.                                 The maximum working temperature is 180 degrees.   
           30 eh eh eh eh 38 35 33                                   Maximum working temperature of 200 degrees.                                 30 35 33 ah ah ah                                     The maximum working temperature is 230 degrees.    
33, 35, 38, 40, 42 and so on represent the maximum magnetic energy product. The maximum magnetic energy of N33 ndfeb material is about 33MGOe. The maximum magnetic energy of N35 ndfeb material is about 35MGOe. The maximum magnetic energy of N40 ndfeb is about 40MGOe. The conversion of MGOe and kA/m3 is 1MGOe = 8kA/m3, which means the maximum magnetic energy of N40 is about 320kA/m3.      
The higher the brand, the higher the magnetism, the higher the corresponding price, so the specific needs to be determined according to the actual needs of the customer. In general, such as packaging, machinery, stationery and other products are not high in the selection of n33 brand. The middle and low frequency horn USES the magnet mostly to choose the n35 number.        
Sintered neodymium ferroboron magnet, with the super strong magnetic force that can not be imagined, sintered neodymium iron and boron magnets theoretically the maximum suction is hundreds of times its own weight, is the most powerful permanent magnet. Of course, the larger the magnet, the stronger the magnetic force.         If you need to make custom, please contact our customer service, indicating that you need to customize the size, number, quantity, electroplating layer, tolerance requirement, magnetizing direction and so on. We will make the production according to your requirement.