3.Grade:N35-52,M,H,SH,UH,EH
5.size:According to customer requirements
7.material :Neodymium Magnets
8.cladding material :Nickel, nickel and copper, nickel, zinc, gold, silver, and the passivation, black epoxy resin
9.Max Working Temperature: 80 ℃
8.cladding material :Nickel, nickel and copper, nickel, zinc, gold, silver, and the passivation, black epoxy resin
9.Max Working Temperature: 80 ℃
About Neodymium Magnets:
Neodymium magnets are one of rare earth permanent magnets. Neodymium magnets are also known as NdFeB magnets, or neo rare earth magnets. As its magnetic strength is very strong, people also simply call it super strong magnets or super powerful magnets. The main elements of this magnet include neodymium (Nd), iron (Fe) and boron (B).
General Information Neodymium magnets are one of rare earth permanent magnets. Neodymium magnets are also known as NdFeB magnets, or neo rare earth magnets. As its magnetic strength is very strong, people also simply call it super strong magnets or super powerful magnets. The main elements of this magnet include neodymium (Nd), iron (Fe) and boron (B).
Sintered neodymium iron boron rare earth magnet are widely used in speakers, the rare earth dauermagnete can provide the permanent magnetic field for the speaker coil, which is embedded in the paper of the speaker cone. When the audio signal flows throw the speaker coil, it generates a small magnetic field the strength of which varies with the strengthof the audio signal. This small magnetic field is repelled by or attracted to the permanent magnetic field produced by the speaker magnet. Thus the paper cone moves away from or closer towards the back of the speaker. Hence as the strength of the audio signal wiggles the paper cone wiggles back and forth, and you get sound waves that match the audio signal. Only the field in front of the speaker magnet (where the speaker cone is located) is of any use. The field that comes out the back of the magnet serves no purpose, and you might as well use it to stick the speaker to the fridge. Usually neodymium magnet are used as speaker magnet.
Physical properties
| Temp.Coeff.OfBr | 0.11%ºC | Temp.Coeff.OfHc | -0.60%ºC |
| Density | 7.3-7.5g/cm² | ElectricalResistivity | 114μ.Ω.Cm |
| Vickers Hardness | 600Hv | FlexuralResitivity | 25kg/mm |
| Tensile Strength | 8.0Kg/mm² | Coeff.OfThermal Expansion | 4x10¯³/ºC |
| Specific Heat | 0.12Kcal/Kg | ThermalCondustivity | 7.7kcal/[m.h.ºC] |
| Young's Modulus | 1.6X10[11]N/m² | Rigidity | 0.64N/m² |
| Poisson's Ratio | 0.24 | Compressibility | 9.8x10-12m²/N |
| Curie Temperature | 310-340ºC |
Magnetic parameter and Conversion table
| UnitandSymbol | Sl-units | Conversiontable |
| Flux Density B | T(Telsa) | 1T=1Vs/m²=10kGs |
| Polarization J | T(Telsa) | 1T=1Vs/m²=10kGs |
| Magentic Field strength H | A/m | 1A/m=0.4τOe=1.257Oe |
| Energy density(BH)m | KJ/m³ | 1KJ/m³=0.126MGOe |
| Magnetic Flux Φ | Wb(Weber) | 1Wb=1Vs=10Mx |
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