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DOUBLE HIGH GRADE MAGNET STEEL
(HIGH REMANENCE / HIGH COERCIVE FORCE)
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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.

Double high grade magnet steel (high remanence / high coercive force) Certifications


Double high grade magnet steel (high remanence / high coercive force) Performance Advantages

  • Excellent overall performance
  • Able to adapt to harsh working environment

Double high grade magnet steel (high remanence / high coercive force) Application fields

Electroacoustic Equipment


Double high grade magnet steel (high remanence / high coercive force) Performance parameterdownload

Magnetic Properties of GBD magnets
Grade Remanence,Br mT or kGs Coercivity,Hcb kA/m or kOe Intrinsic Coercivity,Hcj kA/m or kOe Maximium Energy Product,(BH)max kJ/m or kOe Max Working Temp Tw(℃)
G55H 1440-1480(14.4-14.8) ≥1061(≥13.3) ≥1353(≥17) 398-422(53-56) 120
G52H 1410-1470(14.1-14.7) ≥1050(≥13.2)  ≥1353(≥17) 398-422(50-53) 120
G52SH 1430-1450(14.3-14.5) ≥1050(≥13.2)  ≥1592(≥20) 406-430(51-54) 150
G50SH 1400-1450(14.0-14.5) ≥1035(≥13.0) ≥1592(≥20) 382-406(48-51) 150
G48SH 1370-1430(13.7-14.3) ≥1035(≥13.0) ≥1592(≥20) 366-390(46-49) 150
G45SH 1320-1370(13.2-13.7) ≥1003(≥12.6) ≥1592(≥20) 342-366(43-46) 150
G50UH 1400-1450(14.0-14.5) ≥1035(≥13.0) ≥1990(≥25) 382-406(48-51) 180
G48UH 1370-1430(13.7-14.3) ≥1035(≥13.0)  ≥1990(≥25) 366-390(46-49)  180
G45UH 1300-1360(13.0-13.6) ≥1003(≥12.6)  ≥1990(≥25) 342-366(43-46)  180
G42UH 1280-1340(12.8-13.4) ≥907(≥11.4)  ≥1990(≥25) 318-342(40-43)  180
G40UH 1260-1310(12.6-13.1) ≥907(≥11.4)  ≥1990(≥25) 302-326(38-41)  180
G48EH 1370-1430(13.7-14.3) ≥1035(≥13.0)  ≥2388(≥30) 366-390(46-49) 200
G45EH 1300-1360(13.0-13.6) ≥1003(≥12.6)  ≥2388(≥30) 342-366(43-46) 200
G42EH 1280-1320(12.8-13.2) ≥907(≥11.4)  ≥2388(≥30) 318-342(40-43) 200
G40EH 1260-1310(12.6-13.1) ≥907(≥11.4)  ≥2388(≥30) 302-326(38-41) 200
G38EH 1220-1270(12.2-12.7) ≥907(≥11.4)  ≥2388(≥30) 287-310(36-39) 200
G42AH 1280-1340(12.8-13.4) ≥907(≥11.4)  ≥2786(≥35) 318-342(40-43) 240
G40AH 1260-1310(12.6-13.1) ≥907(≥11.4)  ≥2786(≥35) 302-326(38-41) 240
G38AH 1220-1250(12.2-12.5) ≥907(≥11.4)  ≥2786(≥35) 287-310(36-39) 240
G35AH 1160-1230(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 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)


Double high grade magnet steel (high remanence / high coercive force) 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


Double high grade magnet steel (high remanence / high coercive force) Executive Standard

ISO9001、ISO14001、IATF16949、ISO45001


Double high grade magnet steel (high remanence / high coercive force) 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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High grade magnet steel (SH / UH / EH / AH series)

Ketian Magnet's high-grade magnets have excellent high temperature characteristics and are in the leading position in the industry in terms of consistency and stability. There are a wide range of customer bases and application cases in the fields of automobiles, industrial motors, compressors, generators, etc.

Magnetic steel components

Ketian Magnet has accumulated rich experience in magnetic steel components, and can provide customers with value-added services such as the bonding and assembly of magnetic steel and magnetic steel, magnetic steel and other components. At present, the products are widely used in wind power generation, new energy vehicles, industrial motors and other fields, and are well received and trusted by customers.
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