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Magnetic Properties Of Sintered Ferrite Magnets
National standard

GradeValue
BrHcb(BHC)Hcj(IHC)(BH)max
mTKGKA/mKOeKA/mKOeKj/m3MGOe
Y10T(=C1)200/2182.00/2.18125/1451.57/1.82210/2502.64/3.146.5/8.00.8/1.0
Y25360/3703.60/3.70135/1501.70/1.88140/1701.76/2.1422.5/25.32.8/3.2
Y30(=C5)380/3853.80/3.85191/2102.40/2.64199/2202.50/2.5126.0/283.4/3.7
Y30BH380/3903.80/3.90223/2352.80/2.95231/2452.90/3.0827.0/30.03.4/3.7
Y33410/4204.10/4.20220/2352.77/2.95225/2402.83/3.0131.5/33.04.0/4.2
Y35400/4104.00/4.10175/1952.20/2.45180/2002.26/2.5130.0/32.03.8/4.0
C8(=C8A)385/3903.85/3.90235/2552.95/3.20242/2653.05/3.3327.8/30.03.5/3.7
C10400/4104.00/4.10288/3003.62/3.77280/2873.51/3.6030.4/31.93.8/4.0

Chinese standard

MaterialBrHcBHcJ(BH)max
mTKGKA/mOeKA/mOeKj/m3MGOe
Y8T200~235≥2000125~160≥1570210~280≥26106.5~9.5≥0.8
Y22H310~360≥3100220~250≥2770280~320≥352020.0~24.0≥2.5
Y25360~400≥3600135~170≥1700140~200≥176022.5~28.0≥2.8
Y26H-1360~390≥3600220~250≥2512225~255≥283023.0~28.0≥2.9
Y26H-2360-380≥3600263-288≥3300318-350≥400024.0-28.0≥3.0
Y27H370~400≥3500225-240≥2830235-260≥295025.0~29.0≥3.1
Y28370-400≥3700175-210≥2200180-220≥226026.0-30.0≥3.3
Y28H-1380-400≥3800240-260≥3020250-280≥314027.0-30.0≥3.1
Y28H-2360-380≥3600271-295≥3400382-405≥180026.0-30.0≥3.3
Y30370~4003.7~4.0175~2102.20~2.64180~2202.26~2.7726.0~30.03.3~3.8
Y30H-1380~400≥3800230-275≥2890235-290≥295027.0~32.5≥3.4
Y30H-2395-415≥3950275-300≥3460310-335≥390027.0~32.0≥3.4
Y32400~420≥4000160~190≥2010165~195≥207030.0~33.5≥3.8
Y32H-1400-420≥4000190-230≥2390230-250≥289034.5-35.0≥4.0
Y32H-2400-440≥4000224-240≥2810230-250≥289031.0-34.0≥3.9
Y33410~430≥4100220~250≥2760225~255≥283031.5~35.0≥4.0
Y33H410-430≥4100250-270≥3140250-275≥314031.5-35.0≥4.0
Y34420-440≥4200200-230≥2510205-235≥258032.5-36.0≥4.1
Y35430-450≥4300215-239≥2700217-242≥273033.1-33.2≥4.2
Y36440-450≥4400247-271≥3100250-374≥440035.1-38.3≥4.4
Y38440-460≥4400285-305≥3580294-310≥369036.6-40.6≥4.6
Y40450-460≥4500330-354≥4150340-360≥427037.6-41.8≥4.7

USA standard

MaterialBrHcBHcJ(BH)max
mTKGKA/mKOeKA/eKOekj/m3MGOe
C12302.31481.862583.58.361.05
C53803.81912.41992.5273.4
C73403.42583.23318421.92.75
C8(=C8A)3853.852352.952423.0527.83.5
C8B4204.22322.9132362.9632.84.12
C93803.82803.5163204.0126.43.32
C1040042883.6172803.5130.43.82
C114304.32002.5122042.5634.44.32

Europe standard
The standard from International Electronics Committee(IEC404-8-1)

GradeAllowed Value (min/typical)
BrHcb(BHC)Hcj(IHC)(BH)max
MTKGKA/mKOeKA/mKOeKj/m3MGOe
HF8/22200/2202.00/2.20125/1401.57/1.76220/2302.76/2.896.5/6.80.8/1.1
HF20/19320/3333.20/3.33170/1902.14/2.39190/2002.39/2.5120.0/21.02.5/2.7
HF20/28310/3253.10/3.25220/2302.76/2.89280/2903.52/3.6420.0/21.02.5/2.7
HF22/30350/3653.50/3.65255/2653.20/3.33290/3003.64/3.7722.0/23.52.8/3.0
HF24/16350/3653.50/3.65155/1751.95/2.20160/1802.01/2.2624.0/25.53.0/3.2
HF24/23350/3653.50/3.65220/2302.76/2.89230/2402.89/3.0124.0/25.53.0/3.2
HF24/35360/3703.60/3.70260/2703.27/3.39350/3604.40/4.5224.0/25.53.0/3.2
HF26/16370/3803.70/3.80155/1751.95/2.20160/1802.01/2.2626.0/27.03.2/3.4
HF26/18370/3803.70/3.80175/1902.20/2.39180/1902.26/2.3926.0/27.03.3/3.4
HF26/24370/3803.70/3.80230/2402.89/3.01240/2503.01/3.1426.0/27.03.3/3.4
HF26/26370/3803.70/3.80230/2402.89/3.01260/2703.27/3.3926.0/27.03.3/3.4
HF26/30385/3953.85/3.95260/2703.27/3.39300/3103.77/3.8926.0/27.03.3/3.4
HF28/26385/3953.85/3.95250/2653.14/3.33260/2753.27/3.4528.0/30.03.5/3.8
HF28/28385/3953.85/3.95260/2703.27/3.39280/2903.50/3.6028.0/30.03.5/3.8
HF30/26395/4053.95/4.05250/2603.14/3.33260/2703.27/3.3930.0/31.53.8/3.9
HF32/17410/4204.10/4.20160/1802.01/2.26165/1752.07/2.2032.0/33.04.0/4.1
HF32/22410/4204.10/4.20215/2252.70/2.83220/2302.76/2.8932.0/33.04.0/4.1
HF32/25410/4204.10/4.20240/2503.01/3.14250/2603.14/3.2732.0/33.04.0/4.1

Japan TDK standard

GradeCompositionBrHcbHcjBH max
mTkGkA/mkOekA/mkOeKJ/m3
FB40SrO6Fe2O3410+/-104.1+/-10234.8+/-11.92.95+/-0.15238.7+/-15.93.0+/-0.231.4+/-1.6
FB3NSrO6Fe2O3395+/-153.95+/-15234.8+/-11.92.95+/-0.15238.7+/-15.93.0+/-0.228.7+/-2.4
FB3GSrO6Fe2O3375+/-153.75+/-15254.6+/-15.93.2+/-0.2270.6+/-19.93.4+/-0.2525.9+/-2.4
FB3XSrO6Fe2O3375+/-153.75+/-15234.8+/-11.92.95+/-0.15238.7+/-15.93.0+/-0.225.9+/-2.4
FB1ASrO6Fe2O3220+/-152.20+/-15159.2+/-15.92.0+/-0.2258.6+/-19.93.25+/-0.258.9+/-1.6
FB5HSrO6Fe2O3405+/-154.05+/-15298.4+/-11.93.75+/-0.15322.3+/-11.94.05+/-0.1531.1+/-1.6
FB4XSrO6Fe2O3420+/-104.20+/-10234.8+/-11.92.95+/-0.15238.7+/-15.93.0+/-0.233.4+/-1.6
FB4BSrO6Fe2O3400+/-104.00+/-10254.6+/-11.93.2+/-0.2262.6+/-19.93.3+/-0.2530.3+/-1.6
FB4ASrO/410+/-104.10+/-10175.1+/-15.92.2+/-0.2176.7+/-15.92.22+/-0.231.8+/-1.6
BaO6Fe2O3
FBGNSrO6Fe2O3440+/-104.40+/-10258.6+/-11.93.25+/-0.15262.6+/-11.93.3+/-0.1536.7+/-1.6
FB6BSrO6Fe2O3420+/-104.20+/-10302.4+/-11.93.8+/-0.15318.3+/-11.94.0+/-0.1533.4+/-1.6
FB6HSrO6Fe2O3400+/-104.00+/-10302.4+/-11.93.8+/-0.15358.1+/-11.94.5+/-0.1530.3+/-1.6
FB6ESrO6Fe2O3380+/-103.80+/-10290.5+/-11.93.65+/-0.15393.9+/-11.94.95+/-0.1527.5+/-1.6
FB5NSrO6Fe2O3440+/-104.40+/-10256.8+/-11.92.85+/-0.152259.2+/-11.92.88+/-0.1536.7+/-1.6
FB5BSrO6Fe2O3420+/-104.20+/-10262.6+/-11.93.3+/-0.15266.6+/-11.93.35+/-0.1533.4+/-1.6

Physical Characteristics

Compressive Strength1.4 x 104 kg/cm2
Required Magnetizing Field12,000 - 15,000 Oe
Electrical Resistivity> 104 μ-ohm-cm/cm2
Density4.7-5.0 g/cm3
Recoil Permeability1.05 μr
Rev. Temp. Coeff.-0.20 %/°C

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