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1、HARD FERRITE MAGNETSHard ferrite (ceramic) magnets were developed in the 1960s as a low cost alternative to metallic magnets. Even though they exhibit low energy (compared with other permanent magnet materials) and are relatively brittle and hard, ferrite magnets have won wide acceptance due to thei
2、r good resistance to demagnetization, excellent corrosion resistance and low price per pound. In fact, measured by weight, ferrite represents more than 75 percent of the world magnet consumption. It is the first choice for most types of DC motors, magnetic separators, magnetic resonance imaging and
3、automotive sensors.Ferrite Magnets characteristicsMostly Used national standard - SJ285-77 permanent ferrite magnet standardGradeValue(min/typical in our factory)BrHcb(BHC)Hcj(IHC)(BH)maxMTKGKA/mKoeKA/mKOeKj/mA3MGOeY10T(=C1)200/2182.00/2.18125/1451.57/1.82210/2502.64/3.146.5/8.00.8/1.0Y25360/3703.60
4、/3.70135/1501.70/1.88140/1701.76/2.1422.5/25.32.8/3.2Y30(=C5)380/3853.80/3.85191/2102.40/2.64199/2202.50/2.5126.0/283.4/3.7Y30BH380/3903.80/3.90223/2352.80/2.95231/2452.90/3.0827.0/30.03.4/3.7Y33410/4204.10/4.20220/2352.77/2.95225/2402.83/3.0131.5/33.04.0/4.2Y35400/4104.00/4.10175/1952.20/2.45180/20
5、02.26/2.5130.0/32.03.8/4.0C8(=C8A)385/3903.85/3.90235/2552.95/3.20242/2653.05/3.3327.8/30.03.5/3.7C10400/4104.00/4.10288/3003.62/3.77280/2873.51/3.6030.4/31.93.8/4.0Chinese SJ/T0410-2000 Permanent Ferrite Manget Standard3RHcBHcJ(BH)maxGrademTKGKA/mKoeKA/mKoeKj/mMGOeY8T2002352.0 2.351251601.57 2.0121
6、02802.64 3.526.5 9.50.8 1.2Y203203803.2 3.81351901.70 2.38140 1951.76 2.4518.0 22.02.3 2.8Y22H3103603.1 3.62202502.77 3.14280 3203.52 4.0220.0 24.02.5 3.0Y233203703.2 3.71701902.14 2.381902302.39 2.8920.0 25.52.5 3.2Y253604003.6 4.01351701.70 2.141402001.76 2.5122.5 28.02.8 3.5Y26H3603903.6 3.922025
7、02.77 3.142252552.83 3.2123.0 28.02.9 3.5Y27H3704003.7 4.02052502.58 3.142102552.64 3.2125.0 29.03.1 3.7Y283704003.7 4.017521022.20 2.641802202.26 2.7726.0 30.03.3 3.8Y30H-13804003.8 4.02302752.89 3.46235 2902.95 3.6527.0 32.03.4 4.1Y30H-2 3954153.95 4.152753003.46 3.773103353.90 4.2128.5 32.53.5 4.
8、0Y32400 4204.0 4.21601902.01 2.38165 1952.07 2.4530.0 33.53.8 4.2Y33410 4304.1 4.32202502.77 3.14225 2552.83 3.2131.535.04.0 4.4Y354304504.3 4.52152392.70 3.00217 2412.73 3.0333.1 33.24.16 4.17In MMPA (0100-87) standardGradeBRHcBHcJ(BH)maxmTKGKA/mKoeKA/mKoeKj/mMGOeC12302.31481.842583.58.361.05C53803
9、.81912.41992.5273.4C73403.42583.233184.0021.92.75C8A3853.852352.952423.0527.83.5C8B4204.22322.9132362.9632.84.12C93803.82803.5163204.0126.43.32C104004.02883.6172803.5130.43.82C114304.32002.5122042.5634.44.32Ring shape size(mm) DxdxH中60X33X320中 102X51X523中 169X86X529中60X40X320中 102X57X523中 181X56X529
10、中60X43X320中 102X60X523中 181X57X529中 61X24X315中 102X75X523中 181X73X529中 61X32X315中 109X45X528中 181X83.5X529中63X42X320中 109X60X528中 181X86/90X529中65X24X321中 110X38X521中 181X95X529中65X25X321中 110X43X521中 193X80X529中65X32X321中 110X45X521中 193X83.5X529中68X32X315中 110X5X521 (with 12.7X2hole)中68X40X315中75X
11、32X323中75X40X323中 30X12.5X320中 110X51X521中 193X86/89X527中68X42X315中 110X57X521中 193X110X527中 70X16X317中 110X60X521中 193X 122X527中 70X20X317中 110X51X521中 193X86/89X527中68X42X315中 110X57X521中 193X110X527中 70X16X317中 110X60X521中 193X 122X527中 70X20X317中 115X43X523中200X83X527中70X30.5X317中 115X45X523中200
12、X86X527中 70X32X317中 115X43X523中200X83X527中70X30.5X317中 115X45X523中200X86X527中 70X32X317中 115X57X523中200X95X527中 70X56X317中 115X58.7X323 (elliptical)中200X100X527中 70X40X317中 115X60X523中200X 110X527中 71X40X317中 115X67X523中200X 120X527中 71X30.5X317中 115X80X523中206X88.9X530中 71X32X317中 121X45X524中206X89
13、X530中72X30.5X316中 121X57X524中206X 118X530中 72X32X316中 121X60X524中 210X86X530中 72X38X316中 121X65X524中 210X118X530中 72X40X316USA StandardTopical ilirs5MaterialBrHcb (He)HcjHci)(BH)maxmTkGkA/mkA/mkOekJ/m3MGOeC12302.301461.6625S3.50B.361.05C53803.801912.401992.5027.03.40C73403.402583.233d 84.0021.92.75C8(=
