Daily Use Powerful NdFeB Magnet

Dailymag Magnetics manufacture and export Various NdFeB magnets for industry use and daily use.We supply you packaged NdFeB magnets for school, home and office use. You can use them to hold paper, notepad, Window screen and small gadgets.If you want to know more use of NdFeB Magnets in your daily life, you are invited to vist:

Daily Use Powerful NdFeB Magnet


 
Neodymium Magnet (NdFeB magnet) for motor, generator, driver in various specification Tile-shaped and special-shaped Neodymium Magnet (NdFeB magnet)

 
Neodymium Magnet Blocks in various specification Neodymium Magnet products painted with epoxy resin
Neodymium Magnet Rings in various specification Neodymium Magnet Cylinders in various specification

 

 
Special Shape of Neodymium Magnet Rubber Coated Neodymium Magnet

 
Special Shape of Neodymium Magnet QQMAG: Amazing Magnetic Sphere




 

Magnetic properties of Sintered Neodymium Magnet (NdFeB magnet):

Grade Remanence Coercive Force  Intrinsic
Coercive Force
Max. energy
product
Max.
Operating
Temperature
Br
mT
(kGs)
Hcb
kA/m
(kOe)
Hcj
kA/m
(kOe)
BH max kJ/m3
(MGOe)
Tw
N35 1170-1220 ≥ 868 ≥ 955 263-287 80 ℃
(11.7-12.2) ( ≥ 10.9) ( ≥ 12) (33-36)
N38 1220-1250 ≥ 899 ≥ 955 287-310 80 ℃
(12.2-12.5) ( ≥ 11.3) ( ≥ 12) (36-39)
N40 1250-1280 ≥ 907 ≥ 955 302-326 80 ℃
(12.5-12.8) ( ≥ 11.4) ( ≥ 12) (38-41)
N42 1280-1320 ≥ 915 ≥ 955 318-342 80 ℃
(12.8-13.2) ( ≥ 11.5) ( ≥ 12) (40-43)
N45 1320-1380 ≥ 923 ≥ 955 342-366 80 ℃
(13.2-13.8) ( ≥ 11.6) ( ≥ 12) (43-46)
N48 1380-1420 ≥ 923 ≥ 876 366-390 80 ℃
(13.8-14.2) ( ≥ 11.6) ( ≥ 12) (46-49)
N50 1400-1450 ≥ 796 ≥ 876 382-406 60 ℃
(14.0-14.5) ( ≥ 10.0) ( ≥ 11) (48-51)
N52 1430-1480 ≥ 796 ≥ 876 398-422 60 ℃
(14.3-14.8) ( ≥ 10.0) ( ≥ 11) (50-53)
30M 1080-1130 ≥ 796 ≥ 1114 223-247 100 ℃
(10.8-11.3) ( ≥ 10.0) ( ≥ 14) (28-31)
33M 1130-1170 ≥ 836 ≥ 1114 247-263 100 ℃
(11.3-11.7) ( ≥ 10.5) ( ≥ 14) (31-33)
35M 1170-1220 ≥ 868 ≥ 1114 263-287 100 ℃
(11.7-12.2) ( ≥ 10.9) ( ≥ 14) (33-36)
38M 1220-1250 ≥ 899 ≥ 1114 287-310 100 ℃
(12.2-12.5) ( ≥ 11.3) ( ≥ 14) (36-39)
40M 1250-1280 ≥ 923 ≥ 1114 302-326 100 ℃
(12.5-12.8) ( ≥ 11.6) ( ≥ 14) (38-41)
42M 1280-1320 ≥ 955 ≥ 1114 318-342 100 ℃
(12.8-13.2) ( ≥ 12.0) ( ≥ 14) (40-43)
45M 1320-1380 ≥ 995 ≥ 1114 342-366 100 ℃
(13.2-13.8) ( ≥ 12.5) ( ≥ 14) (43-46)
48M 1360-1430 ≥ 1027 ≥ 1114 366-390 100 ℃
(13.6-14.3) ( ≥ 12.9) ( ≥ 14) (46-49)
50M 1400-1450 ≥ 1033 ≥ 1114 382-406 100 ℃
(14.0-14.5) ( ≥ 13.0) ( ≥ 14) (48-51)
30H 1080-1130 ≥ 796 ≥ 1353 223-247 120 ℃
(10.8-11.3) ( ≥ 10.0) ( ≥ 17) (28-31)
33H 1130-1170 ≥ 836 ≥ 1353 247-271 120 ℃
(11.3-11.7) ( ≥ 10.5) ( ≥ 17) (31-34)
35H 1170-1220 ≥ 868 ≥ 1353 263-287 120 ℃
(11.7-12.2) ( ≥ 10.9) ( ≥ 17) (33-36)
38H 1220-1250 ≥ 899 ≥ 1353 287-310 120 ℃
(12.2-12.5) ( ≥ 11.3) ( ≥ 17) (36-39)
40H 1250-1280 ≥ 923 ≥ 1353 302-326 120 ℃
(12.5-12.8) ( ≥ 11.6) ( ≥ 17) (38-41)
42H 1280-1320 ≥ 955 ≥ 1353 318-342 120 ℃
(12.8-13.2) ( ≥ 12.0) ( ≥ 17) (40-43)
45H 1300-1360 ≥ 963 ≥ 1353 326-358 120 ℃
(13-13.6) ( ≥ 12.1) ( ≥ 17) (43-46)
48H 1370-1430 ≥ 995 ≥ 1353 366-390 120 ℃
(13.7-14.3) ( ≥ 12.5) ( ≥ 17) (46-49)
30SH 1080-1130 ≥ 804 ≥ 1592 223-247 150 ℃
(10.8-11.3) ( ≥ 10.1) ( ≥ 20) (28-31)
33SH 1130-1170 ≥ 844 ≥ 1592 247-271 150 ℃
(11.3-11.7) ( ≥ 10.6) ( ≥ 20) (31-34)
35SH 1170-1220 ≥ 876 ≥ 1592 263-287 150 ℃
(11.7-12.2) ( ≥ 11.0) ( ≥ 20) (33-36)
38SH 1220-1250 ≥ 907 ≥ 1592 287-310 150 ℃
(12.2-12.5) ( ≥ 11.4) ( ≥ 20) (36-39)
40SH 1240-1280 ≥ 939 ≥ 1592 302-326 150 ℃
(12.5-12.8) ( ≥ 11.8) ( ≥ 20) (38-41)
42SH 1280-1320 ≥ 987 ≥ 1592 318-342 150 ℃
(12.8-13.2) ( ≥ 12.4) ( ≥ 20) (40-43)
45SH 1320-1380 ≥ 1003 ≥ 1592 342-366 150 ℃
(13.2-13.8) ( ≥ 12.6) ( ≥ 20) (43-46)
28UH 1020-1080 (10.2-10.8) ≥ 764 ≥ 1990 207-231 180 ℃
( ≥ 9.6) ( ≥ 25) (26-29)
30UH 1080-1130 (10.8-11.3) ≥ 812 ≥ 1990 223-247 180 ℃
( ≥ 10.2) ( ≥ 25) (28-31)
33UH 1130-1170 ≥ 852 ≥ 1990 247-271 180 ℃
(11.3-11.7) ( ≥ 10.7) ( ≥ 25) (31-34)
35UH 1180-1220 ≥ 860 ≥ 1990 263-287 180 ℃
(11.8-12.2) ( ≥ 10.8) ( ≥ 25) (33-36)
38UH 1220-1250 ≥ 876 ≥ 1990 287-310 180 ℃
(12.2-12.5) ( ≥ 11.0) ( ≥ 25) (36-39)
40UH 1240-1280 ≥ 899 ≥ 1990 302-326 180 ℃
(12.5-12.8) ( ≥ 11.3) ( ≥ 25) (38-41)
28EH 1040-1090 ≥ 780 ≥ 2388 207-231 200 ℃
(10.4-10.9) ( ≥ 9.8) ( ≥ 30) (26-29)
30EH 1080-1130 (10.8-11.3) ≥ 812 ≥ 2388 223-247 200 ℃
( ≥ 10.2) ( ≥ 30) (28-31)
33EH 1130-1170 ≥ 836 ≥ 2388 247-271 200 ℃
(11.3-11.7) ( ≥ 10.5) ( ≥ 30) (31-34)
35EH 1170-1220 ≥ 876 ≥ 2388 263-287 200 ℃
(11.7-12.2) ( ≥ 11.0) ( ≥ 30) (33-36)
38EH 1220-1250 ≥ 899 ≥ 2388 287-310 200 ℃
(12.2-12.5) ( ≥ 11.3) ( ≥ 30) (36-39)
30AH 1080-1120 ≥ 812 ≥ 2785 223-255 220 ℃
(10.8-11.2) ( ≥ 10.2) ( ≥ 35) (28-32)
33AH 1120-1170 ≥ 812 ≥ 2785 247-271 220 ℃
(11.2-11.7) ( ≥ 10.2) ( ≥ 35) (31-34)

Physical and Mechanical Properties of Neodymium Magnet:

Thermal Conductivity 7.7 kcal/m-h-°C
Young’s Modulus 1.7 x 104 kg/mm²
Bending Strength 24 kg/mm²
Compressive Strength 80 kg/mm²
Electrical Resistivity 160 µ-ohm-cm/cm²
Density 7.4-7.55 g/cm³
Vickers Hardness 500 - 600

Available coatings for sintered Neodymium Magnet (NdFeB magnet):

Available Coatings:
Surface Coating Thickness
(Microns)
Color Resistance
Passivation   1 Silver Grey Temporary Protection
Nickel Ni+Ni 10-20 Bright Silver Excellent against Humidity
Ni+Cu+Ni
Zinc Zn 8-20 Bright Blue Good Against Salt Spray
C-Zn Shinny Color Excellent Against Salt Spray
Tin Ni+Cu+Sn 15-20 Silver Superior Against Humidity
Gold Ni+Cu+Au 10-20 Gold Superior Against Humidity
Copper Ni+Cu 10-20 Gold Temporary Protection
Epoxy Epoxy 15-25 Black, Red, Grey Excellent Against Humidity
& Salt Spray
Ni+Cu+Epoxy
Zn+Epoxy
Chemical Ni 10-20 Silver Grey Excellent Against Humidity
Parylene Parylene 5-20 Grey Excellent Against Humidity, Salt Spray. Superior Against Solvents, Gases, Fungi and Bacteria.
FDA Approved.

Magnetisation Direction of Magnet


1. Magnetised through depth
2. Axially magnetised
3. Magnetised through diameter*
4. Axially magnetised in segments
5. Radially magnetised 
6. Multipole magnetised in segments on the face
7. Multipole magnetised in segments on outside diamater*
8. Multipole magnetised in segments on inside diamater*
9. Magnetised laterally on the face
All available for magnet is isotropic or anisotropic except*

Sintered NdFeB magnets (also known as "neo" magnets) are among the most popular magnets in the market today. The magnets have been available commercially since November 1984. They boast of offering the highest energy product (of any material/magnets today) and are available in a wide variety of sizes, grades and shapes (discs, arcs, blocks, spheres, trapezoid etc.).

Initially, NdFeB magnets were primarily used for making VCM’s (voice coil motors) in hard disk drives. This application still accounts for approximately 55 percent of all total sales of Sintered NdFeB magnets today. The magnets have many other applications due to their reasonable cost and superior magnetic properties. NdFeB magnets are used in making many tools/equipment such as communication tools, computer devices, motors, sensors, speakers and medical treatment instruments just to mention a few tools/equipment.

Sintered NdFeB magnets are made using an intermetallic compound; Nd2Fe14B which is composed of 2 rare earth atoms, one boron atom and 14 iron atoms. Besides the main-phase Nd2Fe14B (in NdFeB materials), there are some small quantities of rare Nd-rich phase (earth-rich phase), boron-rich phase and others. The earth-rich phase pins domain walls to give sintered NdFeB magnets a high coercive force. NdFeB magnets available today commercially have numerous partial alloying Nd and Fe substitution combinations which results in a variety of properties. Moreover, the magnets majorities are anisotropic which simply means they are capable of being magnetized in the orientation direction. Neo magnets are 3rd generation rare earth magnets which are simply the most commercially advanced and powerful magnets in the market today.

Main advantages
Sintered NdFeB magnets emit very deep magnetic fields attracting other magnets and ferrous items from impressive distances. The magnets are extremely strong when you consider factors like size. The magnets are a true representation of what small powerful magnets can do. Small Sintered NdFeB magnets have an unmatched amount of magnetic force. For instance, the magnets are capable of lifting magnets/metals weighing 1,000 times (their own weight).
You are bound to be amazed at the strength of Sintered NdFeb magnets if you haven’t handled neodymium magnets before. The magnets are 10 times stronger than ferrite magnets which are the strongest ceramic magnets. Another notable advantage of the magnets lies in the fact that they come in a variety of shapes the most common being block, ring and disc shapes. It’s also possible to have custom shapes. The magnets have other advantages i.e. their excellent coercive force, high remanences as well as brilliant high energy product.

Application of Neodymium Magnet:
1. Computers: VCM, Printers
2. Machinery: Magnetic separtors, Robots
3. Transportation: Levitation train, Electric vehicle
4. Medical Service: MRI, Magnetic-therapy devices
5. Energy: Genertator, Electric motor
6. Communication: Mobile telephone, Voice and data, Communication system
7. Electical Appliance: HiFi system, Air conditioner
8. Oil Chemical Industry: Magnetic vibrating device for reducing viscosity and condensation, Nuclear magnetic logging tools, Anti-waxer of oil wells


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