D6.35*1.58mm Strong Neodymium Disc Magnet
|FOB Price:||US $0.01 / Piece|
|Min. Order:||10 Pieces|
|Min. Order||FOB Price|
|10 Pieces||US $0.01/ Piece|
|Production Capacity:||1000 Ton/Year|
|Transport Package:||Packed in Plastic Then Put in Cartons|
|Payment Terms:||T/T, Paypal, Western Union|
- Model NO.: N40
- Shape: Disc
- Grade: N40
- Composition: Neodymium Magnet
- Density: 7.5g/cm3
- Specification: Rosh
- HS Code: 7202991900
- Application: Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid
- Coating: Nickel
- Type: Permanent
- Maximum Operating Temperature: 80 Deg C
- Trademark: TSL
- Origin: China
Neodymium magnets are the strongest type of permanent magnet made. They have replaced other types of magnet in the many applications in modern products that require strong permanent magnets, such as motors in cordless tools, hard disk drives and magnetic fasteners.
Magnetic Property of Neodymium Magnet
Ndfeb magnet offer the highest (BH)max and high Hci
(BH)max, the Maximum Energy Product, of Neodymium magnets is highest of any kind of permanent magnets today in the world. (BH)max at different grades of Neodymium magnets is 27 to 52 MGOe.
Ndfeb magnet have extremely resistance to demagnetization with Hci, Intrisic coercive force, over 12, 000 Oe.
Because of very high (BH)max and Hci, Neodymium magnets could be used as a reversible medium for large amount of energy transformation in miniaturized application where a strong magnetic demagnetization field exists, such as computer hard drive.
Neodymium magnets are most powerful of any kind of magnetic materials
Br of Neodymium magnets are much more than 11, 000 Gauss. Therefore, Neodymium magnets have strong holding strength on metal surface and could be used as component for holding, separating, etc.
Neodymium magnets must be carefully handled to avoid personal injury and material damage due to its extremely magnetic strength and brittle property.
Neodymium magnets are sensitive to temperature change and even lose magnet properties at high temperature
Neodymium magnets lose -0.09 ~ -0.13% of Br/° C and can work stably under 80° C for low Hci Neodymium magnets and 150° C for high Hci Neodymium magnets.
Neodymium magnets are corrupted in humid environment
Surface protection is strongly recommended, such as plating, varnishing and encapsulating.
Neodymium magnets are hard and brittle
Neodymium magnets can be abrasively machined with coolant served to absorb heating and dust. Without coolant, rare earth magnets could crack and chip by the heat produced during high speed cutting or grinding, and the sparks contain the easily oxidized grinding dust that could cause fire!
Tolerance of Neodymium magnets
Unless otherwise specified, tolerance on dimension of magnetization is ± . 005". Other dimensions are± 1.5% or ± . 010", whichever is greater.
Metric Dimensions6.35mm diameter x 1.58mm thick
MaterialSintered Neodymium-Iron-Boron (NdFeB)
Pull Force (lbs[g])1.35
Maximum Operating Temperature80 Deg C (176 Deg F)
Remanent Flux Density Br (kG [T])12.5-12.8 [1.25-1.28]
Coercivity HcB (kOe [kA/m])>=10.9 [>=867]
Intrinsic Coercivity HcJ (kOe [kA/m])>=12.0 [>=995]
Maximum Energy Product Bhmax (MGOe [kJ/m3])38-41 [302-326]
Compression Strength (Mpa)600-1200
Bending Strength (Mpa)150-380
Vickers Hardness (HV)460-660
Recoil Permeability (urec)1.05
Electrical Resistance (Ohm*mm2/m)1.25-1.55
Curie Temperature Tc (° C)310
Thermal Expansion Coefficient 100° C//(x10^-6/K)6
Thermal Expansion Coefficient 100° C? (x10^-6/K)-1