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LOW GRADE MAGNET STEEL
(N SERIES / M SERIES / H SERIES)
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Low grade magnet steel (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 steel (N series / M series / H series) Certifications


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

  • High precision
  • Good corrosion resistance

Low grade magnet steel (N series / M series / H series) Application fields

Mobile Phone Shield

IT Communication


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

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)


Low grade magnet steel (N series / M series / H series) Production Process

The production process of NdFeB:

Ingredients → Quick setting → Hydrogen crushing → Jet mill → Forming → Sintering & aging → Inspection → Finish

Grain boundary diffusion → surface treatment → inspection → packaging → delivery


Low grade magnet steel (N series / M series / H series) Executive Standard

ISO9001、ISO14001、IATF16949、ISO45001


Low grade magnet steel (N series / M series / H series) Production Equipments

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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Double high grade magnet steel (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.

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