Permanent Cast Alnico Magnets with Customized Shape
Among those famous cast alnico magnets manufacturers, it is a professional supplier in China, welcome to wholesale alnico magnet for guitar pickup, alnico 5 magnets, alnico permanent magnets, alnico v magnets, alnico bar magnets from our factory.Customized Cast Alnico MagnetsAlnico material is comprised of aluminum, nickel, cobalt and iron with varying additions of other elements. There are two different manufacturing processes for Alnico: Cast and sintered.Cast Alnico magnets can be made into many shapes and sizes during manufacturing process by using the casting processing method. Cast Alnico magnets are manufactured by pouring the molten metal alloy of Alnico into a mold and then further processing it through heat treated and cooled alternatively. The solidified material has a dark gray appearance on the exterior and may be roughly ground. Magnets that have been polished using machines, may have a shiny gray surface similar to that of steel.SpecificationDimension Tolerance Up to 1" Up to 25.4 mm ±1/64" .40 mm1" to 3" 25.4 to 76.2 mm ±1/32" .81 mm3" to 5" 76.2 to 127.0 mm ±3/64" 1.19 mm5" to 7" 127.0 to 177.8 mm ±1/16" 1.59 mm7" to 9" 177.8 to 228.6 mm ±5/64" 1.98 mmAdvantages of Alnico Magnets· Cast Alnico offers a near net shape. · Cast alnico can be produced to complex shapes with complex magnetic patterns. · Alnico Br as high as NdFeB at room temperature.· Can be used up to 450-550 degrees C (842-932F). · Least variation in magnetic output with temperature change of any magnetic material. · Can be cast in very large sizes.Production Properties: Magnetic Property Parameters of Sintered Alnico GradesEquivalent MMPA ClassRemanenceCoercive ForceCoercive ForceMaximum Energy ProductDensityReversible Temp. CoefficientCurie Temp.Temp. CoefficientBrHcbHcb(BH)maxg/cm3α(Hcj)TCTWmTGsKA/mOeKA/mOeKJ/m3MGOe%/°C°C°CSLN8Alnico.0-1.256.8-0.02760450SLNG12Alnico.5-1.757-0.014810450SLNGT18Alnico.25-2.757.2-0.02850550SLNGT28Alnico.5-3.87.2-0.02850525SLNG34Alnico.5-4.157.2-0.016890525SLNGT31Alnico.9-4.57.2-0.02850550SLNGT.75-5.37.2-0.02850550SLNGT.3-6.07.25-0.02850550SLNGT38JAlnico8HC.75-5.07.2-0.02850550Our regular sizes for reference:Alnico Magnets - Physical Properties PropertyUnitsValue Sintered AlnicoValue Cast AlnicoVickers HardnessHv440440-620Densityg/cm36.8 - 7.06.9 - 7.3Curie Temp TC°C810 - 860740 - 860Curie Temp TF°F1,400 - 1,5801,460 - 1,580Specific ResistanceμΩ·Cm50- 7045 - 75Bending StrengthkN/mm20.35 - 0.760.05 - 0.31Tensile StrengthkN/mm20.35- 0.450.02 - 0.15Thermal Expansion°C-1+11.0 to +12.4 x10-6+11.0 to +13.0 x10-6Note:
The listed values are approximate and should be used as a reference. Any magnetic or physical characteristics should be substantiated before selecting a magnet material. Please engage GME’s Design / Development team members before selecting a design path. CylinderGradeDimensionsApplication A(mm)B(mm)LNG401.579.525Micro-motorsLNG401.712Micro-motorsLNG403.17512.7Micro-motorsLNG40415SensorsLNG40510/15/17/18/20/25.4SensorsLNG40625/30/100SensorsLNG406.3525.4/31.75SensorsLNG40730SensorsLNG40820/25/30/50/150SensorsLN1095SensorsLNG409.52525.4/38.1/63.5SensorsLNG401010/12/15/30/140SensorsLNG521028SensorsLN1010.48MetersLNG401150SensorsLNG401230/50SensorsLNG4012.750.8/76.2CowsLNG402520AssemblyLNG523816BalancesRingGradeDimensionsApplications A(mm)B(mm) LN10234OdometersLN10255OdometersLN10233.5OdometersLNG13515MetersLNG1321810Port MachinesLN101429Port MachinesLNG40101.640SpeakersLNG4050.825.4MotorsLNG40101.638.1SpeakersBlock1GradeDimensionsApplication ABCDEBlendersLNG3742203010 MetersLNG37551113.416 EducationLNG3728.67.625.48 HoldingLNG373020207.5D5HoldingLNG3745303011D5HoldingLNG3725.415.9 5.6D4.8HoldingLNG3719.0512.7 5.6D4.8HoldingLNG3731.7525.4 7.94D7.1HoldingLNG3740252510 HoldingLNG3739.625.425.410.3D5.5HoldingLNG3763.547.64614.3D4.8HoldingLNG3769.857.141.314.32XD7.9HoldingLNG3764122614 HoldingLNG371722106.25 MetersLNG3762266113 EducationLNG372113.116.26.2 MetersBlock2GradeDimensionsApplicationABCDLNG3763.512.73.175 Musical InstrumentsLNG375812.63 Musical InstrumentsLNG376012.73 Musical InstrumentsLNG3725.46.356.35 SensorsLNG3722.54.34.3 SensorsLNG4469252515Magnetic ChucksLNG3762133 Musical InstrumentsLNG40751510 EducationLNG37193.23.2 SensorsLNG37150166 EducationLNG402522.57 MetersLNG4025227R4MetersLNG404242206.5Magnetic ChucksLNG374520157Magnetic ChucksLNG375020207Magnetic ChucksLNGT72505040 Magnetic ChucksLNG52452415 Magnetic ChucksLNG524522.515 Magnetic ChucksLNG4459.559.52511Magnetic ChucksLNG404518.530.5 Magnetic BasesLNG405319.332 Magnetic BasesApplications Mainly used for a variety of Meter, Odometer, Sensors, Motors, Multimeter, Tele, Mobile, Watermeter, Eletricitymeter, Switch, Adhesion, Loudspeakers Port machines, Musical instruments, Magnetic chucks, Educations, Magnetic Bases etc.
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