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Ningbo Jintian Copper (Group) Co., Ltd.
Ningbo Jintian Copper (Group) Co., Ltd.
  • Low Grade Magnet (N Series/M Series/H Series)
  • Low Grade Magnet (N Series/M Series/H Series)

Low Grade Magnet (N Series/M Series/H Series)

Ketian Magnet's low-grade series magnets have the characteristics of high stability and high consistency, combined with the advantages of large-scale and low-cost manufacturing, and provide cost-effective solutions for applications such as electronics, IT, and home appliances.

Low Grade Magnet (N Series/M Series/H Series) Certifications
  • ISO9001
  • ISO14001
  • IATF16949
  • OSHMS

Low Grade Magnet (N Series/M Series/H Series) Performance Advantages


  • High precision

  • Good corrosion resistance

Low Grade Magnet (N Series/M Series/H Series) Application Fields

  • IT Communication
    IT Communication
  • Mobile Phone Shield
    Mobile Phone Shield

Low Grade Magnet (N Series/M Series/H Series) Performance Parameter


Low grade magnet steel (N series / M series / H series) Performance Parameter


NoGradeMagnetic properties of N-series Magnet
Max Working Temp Tw(℃)
Remanence, Br mT or kGsCoercivity, Hcb kA/m or kOeIntrinsic Coercivity, Hcj kA/m or kOeMaximium Energy Product,(BH)max kJ/m³ or kOe
1N551470-1530(14.7-15.3)≥860(≥10.8)≥876(≥11)414-438(52-56)80
2N521430-1480(14.3-14.8)≥860(≥10.8)≥955(≥12)398-422(50-53)80
3N501400-1450(14.0-14.5)≥860(≥10.8)≥955(≥12)382-406(48-51)80
4N481380-1420(13.8-14.2)≥836(≥10.5)≥955(≥12)366-390(46-49)80
5N451320-1380(13.2-13.8)≥876(≥11.0)≥955(≥12)342-366(43-46)80
6N421280-1320(12.8-13.2)≥923(≥11.6)≥955(≥12)318-342(40-43)80
7N401250-1280(12.5-12.8)≥923(≥11.6)≥955(≥12)302-326(38-41)80
8N381220-1250(12.5-12.8)≥899(≥11.3)≥955(≥12)287-310(36-39)80
9N351170-1210(11.7-12.2)≥868(≥10.9)≥955(≥12)263-287(33-36)80
10N331130-1180(11.3-11.8)≥836(≥10.5)≥955(≥12)247-270(31-34)80
11N301080-1130(10.8-11.3)≥796(≥10)≥955(≥12)223-247(28-31)80


NoGradeMagnetic properties of M-series Magnet
Max Working Temp Tw(℃)
Remanence,Br mT or kGsCoercivity,Hcb kA/m or kOeIntrinsic Coercivity,Hcj kA/m or kOeMaximium Energy Product,(BH)max kJ/m³ or kOe
1N52M1430-1480(14.3-14.8)≥1035(≥13.0)≥1114(≥14)398-422(50-53)100
2N50M1400-1450(14.0-14.5)≥1035(≥13.0)≥1114(≥14)382-406(48-51)100
3N48M1380-1430(13.8-14.3)≥1027(≥12.9)≥1114(≥14)366-390(46-49)100
4N45M1330-1380(13.3-13.8)≥995(≥12.5)≥1114(≥14)342-366(43-46)100
5N42M1280-1330(12.8-13.3)≥955(≥12.0)≥1114(≥14)318-342(40-43)100
6N40M1250-1280(12.5-12.8)≥923(≥11.6)≥1114(≥14)302-326(38-41)100
7N38M1220-1250(12.2-12.5)≥899(≥11.3)≥1114(≥14)287-310(36-39)100
8N35M1170-1220(11.7-12.2)≥868(≥10.9)≥1114(≥14)263-287(33-36)100
9N33M1130-1180(11.3-1.8)≥836(≥10.5)≥1114(≥14)247-270(31-34)100
10N30M1080-1130(10.8-11.3)≥796(≥10)≥1114(≥14)223-247(28-31)100


NoGradeMagnetic properties of H-series Magnet
Max Working Temp Tw(℃)
Remanence,Br mT or kGsCoercivity,Hcb kA/m or kOeIntrinsic Coercivity,Hcj kA/m or kOeMaximium Energy Product,(BH)max kJ/m³ or kOe
1N52H1420-1470(14.2-14.7)≥1050(≥13.2)≥1353(≥17)398-422(50-53)120
2N50H1400-1450(14.0-14.5)≥1035(≥13.0)≥1353(≥17)382-406(48-51)120
3N48H1380-1430(13.8-14.3)≥1035(≥13.0)≥1353(≥17)366-390(46-49)120
4N45H1330-1380(13.3-13.8)≥1010(≥12.7)≥1353(≥17)342-366(43-46)120
5N42H1280-1330(12.8-13.3)≥995(≥12.5)≥1353(≥17)318-342(40-43)120
6N40H1250-1280(12.5-12.8)≥940(≥11.8)≥1353(≥17)302-326(38-41)120
7N38H1220-1250(12.2-12.5)≥899(≥11.3)≥1353(≥17)287-310(36-39)120
8N35H1170-1220(11.7-12.2)≥876(≥11.0)≥1353(≥17)263-287(33-36)120
9N33H1130-1180(11.3-1.8)≥844(≥10.6)≥1353(≥17)247-271(31-34)120
10N30H1080-1130(10.8-11.3)≥812(≥10.2)≥1353(≥17)223-247(28-31)120


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)


Low Grade Magnet (N Series/M Series/H Series) Production Process

The production process of NdFeB:

Low Grade Magnet (N Series/M Series/H Series) 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

Low Grade Magnet (N Series/M Series/H Series) Executive Standard


ISO9001, ISO14001, IATF16949, ISO45001

Low Grade Magnet (N Series/M Series/H Series) 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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