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The main material is ferric oxide. The raw material is cheap and easy to get. It makes the
Ferrite becomes the most popular permanent magnet in the application.
Higher temperature resistance
Higher resistance to corrosion, no need for surface treatment
Good heat resistance
There are 2 types of Ferrite for Isotropic and Anisotropic magnet
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| 中国电子行业SJ/T10410-93标准（The standard of Electronic guild of china(ST/T10410-93)） |
| 材料牌号Material |
Br |
HcB |
HcJ |
(BH)max |
| MT |
KG |
KA/m |
KOe |
KA/m |
kOe |
KJ/m3 |
MGOe |
| Y8T |
200~235 |
2.0~2.35 |
125~160 |
1.57~2.01 |
210~280 |
2.64~3.52 |
6.5~9.5 |
0.8~1.2 |
| Y20 |
320~380 |
3.2~3.8 |
135~190 |
1.70~2.38 |
140~195 |
1.76~2.45 |
18.0~22.0 |
2.3~2.8 |
| Y22H |
310~360 |
3.1~3.6 |
220~250 |
2.77~3.14 |
280~320 |
3.52~4.02 |
20.0~24.0 |
2.5~3.0 |
| Y23 |
320~370 |
3.2~3.7 |
170~190 |
2.14~2.38 |
190~230 |
2.39~2.89 |
20.0~25.5 |
2.5~3.2 |
| Y25 |
360~400 |
3.6~4.0 |
135~175 |
1.70~2.14 |
140~200 |
1.76~2.51 |
22.5~28.0 |
2.8~3.5 |
| Y26H |
360~390 |
3.6~3.9 |
220~250 |
2.77~3.14 |
225~255 |
2.83~3.21 |
23.0~28.0 |
2.9~3.5 |
| Y27H |
370~400 |
3.7~4.0 |
205~250 |
2.58~3.14 |
210~255 |
2.64~3.21 |
25.0~29.0 |
3.1~3.7 |
| Y28 |
370~400 |
3.7~4.0 |
175~210 |
2.20~2.64 |
180~220 |
2.26V2.77 |
26.0~30.0 |
3.3~3.8 |
| Y30H-1 |
380~400 |
3.8~4.0 |
230~275 |
2.89~3.46 |
235~290 |
2.95~3.65 |
27.0~32.0 |
3.4~4.1 |
| Y30H-2 |
395~415 |
3.95~4.15 |
275~300 |
3.46~3.77 |
310~335 |
3.90~4.21 |
28.5~32.5 |
3.5~4.0 |
| Y32 |
400~420 |
4.0~4.2 |
160~195 |
2.01~2.38 |
165~195 |
2.07~2.45 |
30.0~33.5 |
3.8~4.2 |
| Y33 |
410~430 |
4.1~4.3 |
220~250 |
2.77~3.14 |
225~255 |
2.83~3.21 |
31.5~35.0 |
4.0~4.4 |
|
|
国际MMPA(0100-87)标准The standard of International MMPA(0100-87) |
| 材料牌号Material |
Br |
HcB |
HcJ |
(BH)max |
| MT |
KG |
KA/m |
KOe |
KA/m |
kOe |
KJ/m3 |
MGOe |
| C1 |
230 |
2.3 |
1.48 |
1.86 |
2.58 |
3.5 |
8.36 |
1.05 |
| C5 |
380 |
3.8 |
191 |
2.4 |
199 |
2.5 |
27 |
3.4 |
| C7 |
340 |
3.4 |
258 |
3.23 |
318 |
4 |
21.9 |
2.75 |
| C8A |
385 |
3.85 |
235 |
2.95 |
242 |
3.05 |
27.8 |
3.5 |
| C8b |
420 |
4.2 |
232 |
2.913 |
236 |
2.96 |
32.8 |
4.12 |
| C9 |
380 |
3.8 |
280 |
3.516 |
320 |
4.01 |
26.4 |
3.32 |
| C10 |
400 |
4 |
288 |
3.617 |
280 |
3.51 |
30.4 |
3.82 |
| C11 |
430 |
4.3 |
200 |
2.512 |
204 |
2.56 |
34.4 |
4.32 |
|
|
| The standard from International Electronics Committee (IEC404-8-1) |
| Grade |
Allowed Value (min/typlcal) |
| Br |
Hcb( bHC ) |
HcJ( iHC ) |
(BH )max |
| MT |
KG |
KA/m |
KOe |
KA/m |
KOe |
Kj/m3 |
MGOe |
| HF8/22 |
200-220 |
2.00-2.20 |
125-140 |
1.57-1.76 |
220-230 |
2.76-2.89 |
6.5-6.8 |
0.8-1.1 |
| HF20/19 |
320-333 |
3.20-3.33 |
170-190 |
2.14-2.39 |
190-200 |
2.39-2.51 |
20.0-21.0 |
2.5-2.7 |
| HF20/28 |
310-325 |
3.l0-3.25 |
220-230 |
2.76-2.89 |
280-290 |
3.52-3.64 |
20.0-21.0 |
2.5-2.7 |
| HF22/30 |
350-365 |
3.50-3.65 |
255-265 |
3.20-3.33 |
290-300 |
3.64-3.77 |
22.0-23.5 |
2.8-3.0 |
| HF24/16 |
350-365 |
3.50-3.65 |
155-175 |
1.95-2.20 |
160-180 |
2.01-2.26 |
24.0-25.5 |
3.0-3.2 |
| HF24/23 |
350-365 |
3.50-3.65 |
220-230 |
2.76-2.89 |
230-240 |
2.89-3.01 |
24.0-25.5 |
3.0-3.2 |
| HF24/35 |
360-370 |
3.60-3.70 |
260-270 |
3.27-3.39 |
350-360 |
4.40-4.52 |
24.0-25.5 |
3.0-3.2 |
| HF26/16 |
370-380 |
3.70-3.80 |
155-175 |
1.95-2.20 |
160-180 |
2.0l-2.26 |
26.0-27.0 |
3.2-3.4 |
| HF26/18 |
370-380 |
3.70-3.80 |
175-190 |
2.20-2.39 |
180-190 |
2.26-2.39 |
26.0-27.0 |
3.3-3.4 |
| HF26/24 |
370-380 |
3.70-3.80 |
230-240 |
2.89-3.01 |
240-250 |
3.01-3.14 |
26.0-27.0 |
3.3-3.4 |
| HF26/26 |
370-380 |
3.70-3.80 |
230-240 |
2.89-3.01 |
260-270 |
3.27-3.39 |
26.0-27.0 |
3.3-3.4 |
| HF26/30 |
385-395 |
3.85-3.95 |
260-270 |
3.27-3.39 |
300-310 |
3.77-3.89 |
26.0-27.0 |
3.3-3.4 |
| HF28/26 |
385-395 |
3.85-3.95 |
250-265 |
3.14-3.33 |
260-275 |
3.27-3.45 |
28.0-30.0 |
3.5-3.8 |
| HF28/28 |
385-395 |
3.85-3.95 |
260-270 |
3.27-3.39 |
280-290 |
3.50-3.60 |
28.0-30.0 |
3.5-3.8 |
| HF30/26 |
395-405 |
3.95-4.05 |
250-260 |
3.14-3.33 |
260-270 |
3.27-3.39 |
30.0-31.5 |
3.8-3.9 |
| HF32/17 |
410-420 |
4.10-4.20 |
160-180 |
2.01-2.26 |
165-175 |
2.07-2.20 |
32.0-33.0 |
4.0-4.I |
| HF32/22 |
410-420 |
4.10-4.20 |
215-225 |
2.70-2.83 |
220-230 |
2.76-2.89 |
32.0-33.0 |
4.0-4.I |
| HF32/25 |
410-420 |
4.10-4.20 |
240-250 |
3.01-3.14 |
250-260 |
3.14-3.27 |
32.0-33.0 |
4.0-4.I |
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