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Ningbo Jintian Copper (Group) Co., Ltd.
Ningbo Jintian Copper (Group) Co., Ltd.
  • Double High Grade Magnet (High Remanence/High Coercive Force)
  • Double High Grade Magnet (High Remanence/High Coercive Force)

Double High Grade Magnet (High Remanence/High Coercive Force)

With the continuous strengthening of the protection of rare earth resources and the development of downstream applications, sintered NdFeB magnetic steel is facing new challenges. Ketian Magnet's Shuanggao grade magnetic steel adopts the latest grain boundary diffusion process and obtains the characteristics of double high remanence and coercivity with limited heavy rare earth input. Used in new energy vehicle drive motor (HEV / EV), inverter air conditioner compressor, various servo motors and other industries. While continuously developing high-end products, it also contributes to the protection of rare earth resources.

Double High Grade Magnet (High Remanence/High Coercive Force) Certifications
  • IATF16949
  • ISO9001
  • ISO14001
  • OSHMS

Double High Grade Magnet (High Remanence/High Coercive Force) Performance Advantages


  • Excellent overall performance

  • Able to adapt to harsh working environment

Double High Grade Magnet (High Remanence/High Coercive Force) Application Fields

  • Electroacoustic Equipment
    Electroacoustic Equipment

Double High Grade Magnet (High Remanence/High Coercive Force) Performance Parameter





Magnetic Properties of GBD magnets
GradeRemanence,Br mT or kGsCoercivity, Hcb kA/m or kOeIntrinsic Coercivity, Hcj kA/m or kOeMaximium Energy Product,(BH)max kJ/m or kOeMax Working Temp Tw(℃)
G55H1440-1480(14.4-14.8)≥1061(≥13.3)≥1353(≥17)398-422(53-56)120
G52H1410-1470(14.1-14.7)≥1050(≥13.2)≥1353(≥17)398-422(50-53)120
G52SH1430-1450(14.3-14.5)≥1050(≥13.2)≥1592(≥20)406-430(51-54)150
G50SH1400-1450(14.0-14.5)≥1035(≥13.0)≥1592(≥20)382-406(48-51)150
G48SH1370-1430(13.7-14.3)≥1035(≥13.0)≥1592(≥20)366-390(46-49)150
G45SH1320-1370(13.2-13.7)≥1003(≥12.6)≥1592(≥20)342-366(43-46)150
G50UH1400-1450(14.0-14.5)≥1035(≥13.0)≥1990(≥25)382-406(48-51)180
G48UH1370-1430(13.7-14.3)≥1035(≥13.0)≥1990(≥25)366-390(46-49)180
G45UH1300-1360(13.0-13.6)≥1003(≥12.6)≥1990(≥25)342-366(43-46)180
G42UH1280-1340(12.8-13.4)≥907(≥11.4)≥1990(≥25)318-342(40-43)180
G40UH1260-1310(12.6-13.1)≥907(≥11.4)≥1990(≥25)302-326(38-41)180
G48EH1370-1430(13.7-14.3)≥1035(≥13.0)≥2388(≥30)366-390(46-49)200
G45EH1300-1360(13.0-13.6)≥1003(≥12.6)≥2388(≥30)342-366(43-46)200
G42EH1280-1320(12.8-13.2)≥907(≥11.4)≥2388(≥30)318-342(40-43)200
G40EH1260-1310(12.6-13.1)≥907(≥11.4)≥2388(≥30)302-326(38-41)200
G38EH1220-1270(12.2-12.7)≥907(≥11.4)≥2388(≥30)287-310(36-39)200
G42AH1280-1340(12.8-13.4)≥907(≥11.4)≥2786(≥35)318-342(40-43)240
G40AH1260-1310(12.6-13.1)≥907(≥11.4)≥2786(≥35)302-326(38-41)240
G38AH1220-1250(12.2-12.5)≥907(≥11.4)≥2786(≥35)287-310(36-39)240
G35AH1160-1230(11.6-12.3)≥812(≥10.2)≥2786(≥35)263-287(33-36)240


Note: The magnet property is measured under room temperature between 20-23celcius degrees

Coating TypeColorThickness/umSST/hPCT/hWorking Temp/℃Performance features
Blue ZnBlue/White5-10≥48<160Medium corrosion resistance performance
Color ZnMultiple colors5-10≥72<160Medium corrosion resistance performance
NICUNISilver white10-30≥72≥96<200High corrosion resistance, thermal resistance and moisture resistance
PVD AluminiumSilver white5-25≥96≥240<390High corrosion resistance and adhesiveness
Phosphate<250Low cost, low corrosion resistance performance
EpoxyBlack/Grey10-30≥480≥96<180High corrosion resistance and insulation performance
Multi-layer coating≥1000≥480Excellent corrosion resistance performance

Notes

  • This performance might vary according to different dimension of product.

  • Multi-layer coating is a combination of different type of coatings, and its color,thickness and working temperature might varies from different combinations.

  • PCT test conditions: 121 celcius degrees, 100% humidity,2atms HAST test condition:132 celcius dergees, 95% humidity,2.7atms(mainly for evaluation of material weight loss)

  • HAST (Highly Accelerated Stress Test) condition: 132 celcius degrees, 95% humidity,2.7atms(mainly for evaluation of material weight loss)


Double High Grade Magnet (High Remanence/High Coercive Force) Production Process

The production process of NdFeB:

Double High Grade Magnet (High Remanence/High Coercive Force) Production Process
  • 01
    Proportioning
  • 02
    Strip casting
  • 03
    Hydrogen decrepitation
  • 04
    Jet milling
  • 05
    Molding
  • 06
    Inspection
  • 07
    Machining
  • 08
    GB diffusion
  • 09
    Surface treatment
  • 10
    Inspection
  • 11
    Packaging
  • 12
    Delivery

Double High Grade Magnet (High Remanence/High Coercive Force) Executive Standard


ISO9001, ISO14001, IATF16949, ISO45001

Double High Grade Magnet (High Remanence/High Coercive Force) Production Equipments

  • Automatic Spraying Coating Line
    Automatic Spraying Coating Line
  • Jet Milling
    Jet Milling
  • Multiple Wire Cutting
    Multiple Wire Cutting
  • Hydrogen Decrepitation Furnace
    Hydrogen Decrepitation Furnace
  • Continuous Sintering Stove
    Continuous Sintering Stove
  • Strip Casting Furnace
    Strip Casting Furnace
  • AMT-4A Magnetic Property Measurement Equipment
    AMT-4A Magnetic Property Measurement Equipment
  • EHS-222MD HAST (Japan)
    EHS-222MD HAST (Japan)
  • HELOS-BFS LASER Particle Size Measurement Equipment (Germany)
    HELOS-BFS LASER Particle Size Measurement Equipment (Germany)
  • HIRST-PFM12 Pulse Magnetic Measurement Equipment (UK)
    HIRST-PFM12 Pulse Magnetic Measurement Equipment (UK)
  • PSL-2J High-Low Temperature Environment Testing Equpment (Japan)
    PSL-2J High-Low Temperature Environment Testing Equpment (Japan)
  • SP3020 Automatic Image Measuring Apparatus
    SP3020 Automatic Image Measuring Apparatus
  • Uitima Expert Plasma Spectrometer (France)
    Uitima Expert Plasma Spectrometer (France)
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