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Mostly Used national standard - SJ285-77 permanent ferrite magnet standard
|
Grade |
Br |
Hcb |
Hcj |
BHmax |
||||
|
kGs |
mT |
kOe |
kA/m |
kOe |
kA/m |
KJ/m3 |
MGOe |
|
|
Y10T(=C1) |
2.00/2.18 |
200/218 |
1.57/1.82 |
125/145 |
2.64/3.14 |
210/250 |
6.5/8.0 |
0.8/1.0 |
|
Y25 |
3.60/3.70 |
360/370 |
1.70/1.88 |
135/150 |
1.76/2.14 |
140/170 |
22.5/25.3 |
2.8/3.2 |
|
Y30(=C5) |
3.80/3.85 |
380/385 |
2.40/2.64 |
191/210 |
2.50/2.51 |
199/220 |
26.0/28 |
3.4/3.7 |
|
Y30BH |
3.80/3.90 |
380/390 |
2.80/2.95 |
223/235 |
2.90/3.08 |
231/245 |
27.0/30.0 |
3.4/3.7 |
|
Y33 |
4.10/4.20 |
410/420 |
2.77/2.95 |
220/235 |
2.83/3.01 |
225/240 |
31.5/33.0 |
4.0/4.2 |
|
Y35 |
4.00/4.10 |
400/410 |
2.20/2.45 |
175/195 |
2.26/2.51 |
180/200 |
30.0/32.0 |
3.8/4.0 |
|
C8(=C8A) |
3.85/3.90 |
385/390 |
2.95/3.20 |
235/255 |
3.05/3.33 |
242/265 |
27.8/30.0 |
3.5/3.7 |
|
C10 |
4.00/4.10 |
400/410 |
3.62/3.77 |
288/300 |
3.51/3.60 |
280/287 |
30.4/31.9 |
3.8/4.0 |
|
Grade |
Br |
Hcb |
Hcj |
BHmax |
Density |
Tw Max |
Remark |
||||
|
kGs |
mT |
kOe |
kA/m |
kOe |
kA/m |
KJ/m3 |
MGOe |
g/cm3 |
℃ |
||
|
C1 |
2.3 |
230 |
1.86 |
150 |
3.5 |
258 |
8.36 |
1.05 |
4.8 |
250 |
Isotropic |
|
C5 |
3.8 |
380 |
2.4 |
190 |
2.5 |
200 |
27.1 |
3.4 |
4.9 |
250 |
|
|
C7 |
3.4 |
340 |
3.23 |
258 |
4.0 |
318 |
21.9 |
2.75 |
4.9 |
250 |
|
|
C8(C8A) |
3.85 |
385 |
2.95 |
235 |
3.0 |
240 |
27.8 |
3.5 |
4.9 |
250 |
Anisotropic |
|
C8B |
4.2 |
420 |
2.9 |
232 |
2.96 |
236 |
32.8 |
4.1 |
4.9 |
250 |
|
|
C9 |
3.8 |
380 |
3.5 |
280 |
4.0 |
320 |
26.4 |
3.3 |
4.9 |
250 |
|
|
C10 |
4.0 |
400 |
3.6 |
288 |
3.5 |
280 |
30.4 |
3.8 |
4.9 |
250 |
|
|
C11 |
4.3 |
430 |
2.5 |
200 |
2.55 |
204 |
34.4 |
4.3 |
4.9 |
250 |
|
China standard -SJ/T10410 2000 permanent ferrite magnet standard
|
Grade |
Br |
Hcb |
Hcj |
BHmax |
||||
|
kGs |
mT |
kOe |
kA/m |
kOe |
kA/m |
KJ/m3 |
MGOe |
|
|
Y8T |
|
200~235 |
1.57 |
125~160 |
2.61 |
210~280 |
6.5~9.5 |
0.8 |
|
Y22H |
3.1 |
310~360 |
2.77 |
220~250 |
3.52 |
280~320 |
20.0~24.0 |
2.5 |
|
Y25 |
3.6 |
360~400 |
1.7 |
135~170 |
1.76 |
140~200 |
22.5~28.0 |
2.8 |
|
Y26H-1 |
3.6 |
360~390 |
2.51 |
220~250 |
2.83 |
225~255 |
23.0~28.0 |
2.9 |
|
Y26H-2 |
3.6 |
360-380 |
3.3 |
263-288 |
4.0 |
318-350 |
24.0-28.0 |
3.0 |
|
Y27H |
3.5 |
370~400 |
2.83 |
225-240 |
2.95 |
235-260 |
25.0~29.0 |
3.1 |
|
Y28 |
3.7 |
370-400 |
2.2 |
175-210 |
2.26 |
180-220 |
26.0-30.0 |
3.3 |
|
Y28H-1 |
3.8 |
380-400 |
30.2 |
240-260 |
3.14 |
250-280 |
27.0-30.0 |
3.1 |
|
Y28H-2 |
3.6 |
360-380 |
3.4 |
271-295 |
382-405 |
26.0-30.0 |
3.3 |
|
|
Y30 |
3.7~4.0 |
370~400 |
2.20~2.64 |
175~210 |
2.26~2.77 |
180~220 |
26.0~30.0 |
3.3~3.8 |
|
Y30H-1 |
3.8 |
380~400 |
2.89 |
230-275 |
2.95 |
235-290 |
27.0~32.5 |
3.4 |
|
Y30H-2 |
3.95 |
395-415 |
3.46 |
275-300 |
3.9 |
310-335 |
27.0~32.0 |
3.4 |
|
Y32 |
4.0 |
400~420 |
2.01 |
160~190 |
2.07 |
165~195 |
30.0~33.5 |
3.8 |
|
Y32H-1 |
4.0 |
400-420 |
2.39 |
190-230 |
2.89 |
230-250 |
34.5-35.0 |
4.0 |
|
Y32H-2 |
4.0 |
400-440 |
2.81 |
224-240 |
2.89 |
230-250 |
31.0-34.0 |
3.9 |
|
Y33 |
4.1 |
410~430 |
2.76 |
220~250 |
2.83 |
225~255 |
31.5~35.0 |
4.0 |
|
Y33H |
4.1 |
410-430 |
3.14 |
250-270 |
3.14 |
250-275 |
31.5-35.0 |
4.0 |
|
Y34 |
4.2 |
420-440 |
2.51 |
200-230 |
2.58 |
205-235 |
32.5-36.0 |
4.1 |
|
Y35 |
4.3 |
430-450 |
2.7 |
215-239 |
2.73 |
217-242 |
33.1-33.2 |
4.2 |
Japan TDK standard
|
Grade |
Composition |
Br |
Hcb |
Hcj |
BHmax |
||||
|
kGs |
mT |
kOe |
kA/m |
kOe |
kA/m |
KJ/m3 |
MGOe |
||
|
FB40 |
SrO6Fe2O3 |
4.1+/-10 |
410+/-10 |
2.95+/-0.15 |
234.8+/-11.9 |
3.0+/-0.2 |
238.7+/-15.9 |
31.4+/-1.6 |
3.95+/-0.2 |
|
FB3N |
SrO6Fe2O3 |
3.95+/-15 |
395+/-15 |
2.95+/-0.15 |
234.8+/-11.9 |
3.0+/-0.2 |
238.7+/-15.9 |
28.7+/-2.4 |
3.6+/-0.3 |
|
FB3G |
SrO6Fe2O3 |
3.75+/-15 |
375+/-15 |
3.2+/-0.2 |
254.6+/-15.9 |
3.4+/-0.25 |
270.6+/-19.9 |
25.9+/-2.4 |
3.25+/-0.3 |
|
FB3X |
SrO6Fe2O3 |
3.75+/-15 |
375+/-15 |
2.95+/-0.15 |
234.8+/-11.9 |
3.0+/-0.2 |
238.7+/-15.9 |
25.9+/-2.4 |
3.25+/-0.3 |
|
FB1A |
SrO6Fe2O3 |
2.20+/-15 |
220+/-15 |
2.0+/-0.2 |
159.2+/-15.9 |
3.25+/-0.25 |
258.6+/-19.9 |
8.9+/-1.6 |
1.1+/-0.2 |
|
FB5H |
SrO6Fe2O3 |
4.05+/-15 |
405+/-15 |
3.75+/-0.15 |
298.4+/-11.9 |
4.05+/-0.15 |
322.3+/-11.9 |
31.1+/-1.6 |
3.9+/-0.2 |
|
FB4X |
SrO6Fe2O3 |
4.20+/-10 |
420+/-10 |
2.95+/-0.15 |
234.8+/-11.9 |
3.0+/-0.2 |
238.7+/-15.9 |
33.4+/-1.6 |
4.2+/-0.2 |
|
FB4B |
SrO6Fe2O3 |
4.00+/-10 |
400+/-10 |
3.2+/-0.2 |
254.6+/-11.9 |
3.3+/-0.25 |
262.6+/-19.9 |
30.3+/-1.6 |
3.8+/-0.2 |
|
FB4A |
SrO/BaO6Fe2O3 |
4.10+/-10 |
410+/-10 |
2.2+/-0.2 |
175.1+/-15.9 |
2.22+/-0.2 |
176.7+/-15.9 |
31.8+/-1.6 |
4.0+/-0.2 |
|
FBGN |
SrO6Fe2O3 |
4.40+/-10 |
440+/-10 |
3.25+/-0.15 |
258.6+/-11.9 |
3.3+/-0.15 |
262.6+/-11.9 |
36.7+/-1.6 |
4.6+/-0.2 |
|
FB6B |
SrO6Fe2O3 |
4.20+/-10 |
420+/-10 |
3.8+/-0.15 |
302.4+/-11.9 |
4.0+/-0.15 |
318.3+/-11.9 |
33.4+/-1.6 |
4.2+/-0.2 |
|
FB6H |
SrO6Fe2O3 |
4.00+/-10 |
400+/-10 |
3.8+/-0.15 |
302.4+/-11.9 |
4.5+/-0.15 |
358.1+/-11.9 |
30.3+/-1.6 |
3.8+/-0.2 |
|
FB6E |
SrO6Fe2O3 |
3.80+/-10 |
380+/-10 |
3.65+/-0.15 |
290.5+/-11.9 |
4.95+/-0.15 |
393.9+/-11.9 |
27.5+/-1.6 |
3.45+/-0.2 |
|
FB5N |
SrO6Fe2O3 |
4.40+/-10 |
440+/-10 |
2.85+/-0.15 |
256.8+/-11.9 |
2.88+/-0.15 |
2259.2+/-11.9 |
36.7+/-1.6 |
4.6+/-0.2 |
|
FB5B |
SrO6Fe2O3 |
4.20+/-10 |
420+/-10 |
3.3+/-0.15 |
262.6+/-11.9 |
3.35+/-0.15 |
266.6+/-11.9 |
33.4+/-1.6 |
4.2+/-0.2 |
The standard from International Electronics Committee(IEC404-8-1)
|
Grade |
Br |
Hcb |
Hcj |
BHmax |
||||
|
kGs |
mT |
kOe |
kA/m |
kOe |
kA/m |
KJ/m3 |
MGOe |
|
|
HF8/22 |
2.00/2.20 |
200/220 |
1.57/1.76 |
125/140 |
2.76/2.89 |
220/230 |
6.5/6.8 |
0.8/1.1 |
|
HF20/19 |
3.20/3.33 |
320/333 |
2.14/2.39 |
170/190 |
2.39/2.51 |
190/200 |
20.0/21.0 |
2.5/2.7 |
|
HF20/28 |
3.10/3.25 |
310/325 |
2.76/2.89 |
220/230 |
3.52/3.64 |
280/290 |
20.0/21.0 |
2.5/2.7 |
|
HF22/30 |
3.50/3.65 |
350/365 |
3.20/3.33 |
255/265 |
3.64/3.77 |
290/300 |
22.0/23.5 |
2.8/3.0 |
|
HF24/16 |
3.50/3.65 |
350/365 |
1.95/2.20 |
155/175 |
2.01/2.26 |
160/180 |
24.0/25.5 |
3.0/3.2 |
|
HF24/23 |
3.50/3.65 |
350/365 |
2.76/2.89 |
220/230 |
2.89/3.01 |
230/240 |
24.0/25.5 |
3.0/3.2 |
|
HF24/35 |
3.60/3.70 |
360/370 |
3.27/3.39 |
260/270 |
4.40/4.52 |
350/360 |
24.0/25.5 |
3.0/3.2 |
|
HF26/16 |
3.70/3.80 |
370/380 |
1.95/2.20 |
155/175 |
2.01/2.26 |
160/180 |
26.0/27.0 |
3.2/3.4 |
|
HF26/18 |
3.70/3.80 |
370/380 |
2.20/2.39 |
175/190 |
2.26/2.39 |
180/190 |
26.0/27.0 |
3.3/3.4 |
|
HF26/24 |
3.70/3.80 |
370/380 |
2.89/3.01 |
230/240 |
3.01/3.14 |
240/250 |
26.0/27.0 |
3.3/3.4 |
|
HF26/26 |
3.70/3.80 |
370/380 |
2.89/3.01 |
230/240 |
3.27/3.39 |
260/270 |
26.0/27.0 |
3.3/3.4 |
|
HF26/30 |
3.85/3.95 |
385/395 |
3.27/3.39 |
260/270 |
3.77/3.89 |
300/310 |
26.0/27.0 |
3.3/3.4 |
|
HF28/26 |
3.85/3.95 |
385/395 |
3.14/3.33 |
250/265 |
3.27/3.45 |
260/275 |
28.0/30.0 |
3.5/3.8 |
|
HF28/28 |
3.85/3.95 |
385/395 |
3.27/3.39 |
260/270 |
3.50/3.60 |
280/290 |
28.0/30.0 |
3.5/3.8 |
|
HF30/26 |
3.95/4.05 |
395/405 |
3.14/3.33 |
250/260 |
3.27/3.39 |
260/270 |
30.0/31.5 |
3.8/3.9 |
Physical property of hard ferrite magnets
|
Typical Physical Properties |
|
|
Curie Temperature (°C) |
450 |
|
Maximum Operating Temperature (°C) |
250 |
|
Hardness (Hv) |
480-580 |
|
Density (g/cm3) |
4.8 - 4.9 |
|
Relative Recoil Permeability (μrec) |
1.05 - 1.20 |
|
Saturation Field Strength, kOe (kA/m) |
10 (800) |
|
Temperature Coefficient of Br (%/°C) |
-0.2 |
|
Temperature Coefficient of iHc (%/°C) |
0.3 |
|
Tensile Strength (N/mm) |
<100 |
|
Transverse Rupture Strength (N/mm) |
300 |
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