Ferrite Magnet
Ferrite magnets are used in applications where magnets can be, or need to be relatively large and the cost needs to be as low as possible.
Ferrite Magnets are easily identified by their dark graphite grey colour, they are very inert, they do not rust and do not require any protective plating. They have a reasonable resistance to demagnetisation and can operate at temperatures up to 180 degrees C.
Ferrite magnets are used extensively for ‘holiday fridge magnets’, for large loudspeakers (particularly bass or subwoofers) and for magnetic conveyor systems where large areas underneath conveyor belts need to be magnetic, but must not be ferociously strong.
Ferrite magnets are considerably weaker than Neodymium magnets, but offer an excellent strength and depth of field when their size or volume becomes relatively large.
The elements of Ferrite magnet areferricoxide,barium,strontium.
Ferrite has highter coercive force and highter resistance to bedemaagnetized and oxidized than other non-rare earth permanent maagnets.The biggest advanttage of such magnet is their low cost.It is widely used from motors and loudspeakers to toys and craft etc..
Typical physical properties:Density 5.0 g/cm3
|
Chinese standard |
||||||||
|
Grade |
Br |
Hcb |
Hci |
(BH)max |
||||
|
MT |
KG |
KA/M |
Koe |
KA/m |
Koe |
KJ/m3 |
MGOe |
|
|
Y10T |
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 |
1.70-238 |
140-195 |
1.76-2.45 |
18.0-22.0 |
23-2.8 |
|
Y22H |
310-360 |
3.1-3.6 |
220-250 |
2.77-3.14 |
280-320 |
3.52-4.02 |
20.0-24.0 |
2.5-3.2 |
|
Y23 |
320-370 |
3.2-3.7 |
170-190 |
2.14-238 |
190-230 |
2.39-2.89 |
20.0-25.5 |
2.5-3.2 |
|
Y25 |
360-400 |
3.6-4.0 |
135-170 |
1.70-2.14 |
140-200 |
1.76-2.51 |
22.5-28.0 |
2.835 |
|
Y26H |
360-390 |
3.6-3.9 |
220-250 |
2.77-3.14 |
225-255 |
2.83-3.21 |
23.0-28.0 |
293.5 |
|
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 |
|
Y30 |
370-400 |
3.7-4.0 |
175-210 |
2.2-2.64 |
180-220 |
2.64-2.77 |
26.0-30.0 |
33-3.8 |
|
Y30BH |
380-390 |
3.8-3.9 |
223-235 |
2.80-2.95 |
231-245 |
2.90-3.08 |
27.0-30.0 |
34-3.7 |
|
Y30-1 |
360-400 |
3.6-4.0 |
135-170 |
1.70-2.14 |
140-200 |
1.76-2.51 |
22.5-28.0 |
28-3.5 |
|
Y10T |
380-400 |
3.8-4.0 |
230-275 |
2.89-3.46 |
235-290 |
2.95-3.65 |
27.0-32.0 |
344.0 |
|
Y20-2 |
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 |
160-190 |
2.01-2.38 |
165-195 |
2.07-2.45 |
30.0-33.5 |
3.842 |
|
Y33 |
410-430 |
4.1-4.3 |
220-250 |
2.77-314 |
225-255 |
2.83-3.21 |
31.5-35.0 |
4.0-4.4 |
|
Y35 |
400-410 |
4.00-4.10 |
175-195 |
2.20-2.45 |
180-200 |
2.26-2.51 |
30.0-32.0 |
3.8-4.0 |
|
USA standard |
||||||||
|
Material |
Br |
Hcb |
Hcj |
(BH)max |
||||
|
mT |
KG |
KA/m |
KOe |
KA/m |
KOe |
KJ/m3 |
MGOe |
|
|
C1 |
230 |
2.3 |
148 |
1.86 |
258 |
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 |
|
C8(C8A) |
385 |
3.85 |
235 |
2.95 |
242 |
3.05 |
27.8 |
3.5 |
|
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 |
