Low Grade Magnet (N Series/M Series/H Series)
Jintian Magnet's low magnet grades 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) Performance Advantages
High precision
Good corrosion resistance
Application Fields
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it-communication -
mobile-phone-shield
Low Grade Magnet (N Series/M Series/H Series) Performance Parameter

| No | Grade | Magnetic properties of N-series Magnet | Max Working Temp Tw(℃) | |||
| Remanence, Br mT or kGs | Coercivity, Hcb kA/m or kOe | Intrinsic Coercivity, Hcj kA/m or kOe | Maximium Energy Product,(BH)max kJ/m³ or kOe | |||
| 1 | N55 | 1470-1530(14.7-15.3) | ≥860(≥10.8) | ≥876(≥11) | 414-438(52-56) | 80 |
| 2 | N52 | 1430-1480(14.3-14.8) | ≥860(≥10.8) | ≥955(≥12) | 398-422(50-53) | 80 |
| 3 | N50 | 1400-1450(14.0-14.5) | ≥860(≥10.8) | ≥955(≥12) | 382-406(48-51) | 80 |
| 4 | N48 | 1380-1420(13.8-14.2) | ≥836(≥10.5) | ≥955(≥12) | 366-390(46-49) | 80 |
| 5 | N45 | 1320-1380(13.2-13.8) | ≥876(≥11.0) | ≥955(≥12) | 342-366(43-46) | 80 |
| 6 | N42 | 1280-1320(12.8-13.2) | ≥923(≥11.6) | ≥955(≥12) | 318-342(40-43) | 80 |
| 7 | N40 | 1250-1280(12.5-12.8) | ≥923(≥11.6) | ≥955(≥12) | 302-326(38-41) | 80 |
| 8 | N38 | 1220-1250(12.5-12.8) | ≥899(≥11.3) | ≥955(≥12) | 287-310(36-39) | 80 |
| 9 | N35 | 1170-1210(11.7-12.2) | ≥868(≥10.9) | ≥955(≥12) | 263-287(33-36) | 80 |
| 10 | N33 | 1130-1180(11.3-11.8) | ≥836(≥10.5) | ≥955(≥12) | 247-270(31-34) | 80 |
| 11 | N30 | 1080-1130(10.8-11.3) | ≥796(≥10) | ≥955(≥12) | 223-247(28-31) | 80 |
| No | Grade | Magnetic properties of M-series Magnet | Max Working Temp Tw(℃) | |||
| Remanence,Br mT or kGs | Coercivity,Hcb kA/m or kOe | Intrinsic Coercivity,Hcj kA/m or kOe | Maximium Energy Product,(BH)max kJ/m³ or kOe | |||
| 1 | N52M | 1430-1480(14.3-14.8) | ≥1035(≥13.0) | ≥1114(≥14) | 398-422(50-53) | 100 |
| 2 | N50M | 1400-1450(14.0-14.5) | ≥1035(≥13.0) | ≥1114(≥14) | 382-406(48-51) | 100 |
| 3 | N48M | 1380-1430(13.8-14.3) | ≥1027(≥12.9) | ≥1114(≥14) | 366-390(46-49) | 100 |
| 4 | N45M | 1330-1380(13.3-13.8) | ≥995(≥12.5) | ≥1114(≥14) | 342-366(43-46) | 100 |
| 5 | N42M | 1280-1330(12.8-13.3) | ≥955(≥12.0) | ≥1114(≥14) | 318-342(40-43) | 100 |
| 6 | N40M | 1250-1280(12.5-12.8) | ≥923(≥11.6) | ≥1114(≥14) | 302-326(38-41) | 100 |
| 7 | N38M | 1220-1250(12.2-12.5) | ≥899(≥11.3) | ≥1114(≥14) | 287-310(36-39) | 100 |
| 8 | N35M | 1170-1220(11.7-12.2) | ≥868(≥10.9) | ≥1114(≥14) | 263-287(33-36) | 100 |
| 9 | N33M | 1130-1180(11.3-1.8) | ≥836(≥10.5) | ≥1114(≥14) | 247-270(31-34) | 100 |
| 10 | N30M | 1080-1130(10.8-11.3) | ≥796(≥10) | ≥1114(≥14) | 223-247(28-31) | 100 |
| No | Grade | Magnetic properties of H-series Magnet | Max Working Temp Tw(℃) | |||
| Remanence,Br mT or kGs | Coercivity,Hcb kA/m or kOe | Intrinsic Coercivity,Hcj kA/m or kOe | Maximium Energy Product,(BH)max kJ/m³ or kOe | |||
| 1 | N52H | 1420-1470(14.2-14.7) | ≥1050(≥13.2) | ≥1353(≥17) | 398-422(50-53) | 120 |
| 2 | N50H | 1400-1450(14.0-14.5) | ≥1035(≥13.0) | ≥1353(≥17) | 382-406(48-51) | 120 |
| 3 | N48H | 1380-1430(13.8-14.3) | ≥1035(≥13.0) | ≥1353(≥17) | 366-390(46-49) | 120 |
| 4 | N45H | 1330-1380(13.3-13.8) | ≥1010(≥12.7) | ≥1353(≥17) | 342-366(43-46) | 120 |
| 5 | N42H | 1280-1330(12.8-13.3) | ≥995(≥12.5) | ≥1353(≥17) | 318-342(40-43) | 120 |
| 6 | N40H | 1250-1280(12.5-12.8) | ≥940(≥11.8) | ≥1353(≥17) | 302-326(38-41) | 120 |
| 7 | N38H | 1220-1250(12.2-12.5) | ≥899(≥11.3) | ≥1353(≥17) | 287-310(36-39) | 120 |
| 8 | N35H | 1170-1220(11.7-12.2) | ≥876(≥11.0) | ≥1353(≥17) | 263-287(33-36) | 120 |
| 9 | N33H | 1130-1180(11.3-1.8) | ≥844(≥10.6) | ≥1353(≥17) | 247-271(31-34) | 120 |
| 10 | N30H | 1080-1130(10.8-11.3) | ≥812(≥10.2) | ≥1353(≥17) | 223-247(28-31) | 120 |
| Coating Type | Color | Thickness/um | SST/h | PCT/h | Working Temp/℃ | Performance features |
| Blue Zn | Blue/White | 5-10 | ≥48 | – | <160 | Medium corrosion resistance performance |
| Color Zn | Multiple colors | 5-10 | ≥72 | – | <160 | Medium corrosion resistance performance |
| NICUNI | Silver white | 10-30 | ≥72 | ≥96 | <200 | High corrosion resistance,thermal resistance and moisture resistance |
| PVD Aluminium | Silver white | 5-25 | ≥96 | ≥240 | <390 | High corrosion resistance and adhesiveness |
| Phosphate | – | – | – | – | <250 | Low cost,low corrosion resistance performance |
| Epoxy | Black/Grey | 10-30 | ≥480 | ≥96 | <180 | High corrosion resistance and insulation performance |
| Multi-layer coating | – | – | ≥1000 | ≥480 | – | Excellent 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)
Production Process
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01Proportioning
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02Strip casting
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03Hydrogen decrepitation
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04Jet milling
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05Molding
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06Inspection
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07Machining
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08GB diffusion
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09Surface treatment
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10Inspection
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11Packaging
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12Delivery
NdFeB Permanent Magnet FAQs
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What are NdFeB magnets used for?
Magnet is an object that can generate magnetic field and is a magnetic dipole that can attract ferromagnetic substances such as iron, nickel, cobalt and other metals. It can be widely used in electric motors, engines, voice coil motors, magnetic resonance imagers, communications, control instruments, audio equipment, etc. In the field of motors, permanent magnet motors assembly using NdFeB magnets as motor magnets are small in size, light in weight, high in torque-to-inertia ratio, and high in servo system response.
Magnets play an important role in the development of modern industry and electronic technology, and are more and more widely used nowadays.
Low Grade Magnet (N Series/M Series/H Series) Executive Standard
ISO9001, ISO14001, IATF16949, ISO45001
Equipments
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automatic-spraying-coating-line -
jet-milling -
multiple-wire-cutting -
hydrogen-decrepitation-furnace -
continuous-sintering-stove -
strip-casting-furnace -
amt-4a-magnetic-property-measurement-equipment -
ehs-222md-hast-japan -
helos-bfs-laser-particle-size-measurement-equipment-germany -
hirst-pfm12-pulse-magnetic-measurement-equipment-uk -
psl-2j-high-low-temperature-environment-testing-equpment-japan -
sp3020-automatic-image-measuring-apparatus -
uitima-expert-plasma-spectrometer-france

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