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Strontium (Sr) ferrite arc magnet has high curie temperature, strong anti-oxidation, big resistivity and strong c-oercive force. Arc magnet is mainly used for following motor:
D.C motor
Auto motor: rain scraper motor, cooling fan motor, window glasses lifting motor, automatic antenna motor, do-or lock control motor, steamer motor ect.
Motorcycle motor: start motor and magnetic motor Frequency transducer motor: air condition motor, fridge c-ompressor motor, automatic washer motor Home appliance motor: home health device, electric equipment in kitche-n, electric fan and electric power toy .
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Physical characters and technical data
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Item |
Symble |
Unit |
Number |
Remarks |
|
Relatively recoil magnetic conductivity |
Ureo |
℃ |
1.05~1.25 |
|
|
Cuire temperature |
Tc |
℃ |
≥450 |
|
|
Temperature coefficient of remanence |
α（Br） |
℃-1 |
-0.2％ |
0~100℃ |
|
Temperature coefficient of coercive force |
α（Hcj） |
℃-1 |
0.2％~0.5％ |
0~100℃ |
|
Density |
ρ |
g/cm³ |
4.7~5.0 |
|
|
Resistivity |
ρ |
Ω · cm |
≥104 |
|
|
Linear expansion coefficient |
a |
℃-1 |
7~15×10-6 |
|
|
Hardness |
HV |
--- |
480~580 |
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Material feature
|
Desingnation
of Material |
Br(mT) |
Hcb(KA/m) |
Hcj(KA/m) |
[BH]m(KJ/m³） |
International
relevant norm & standards |
|
Y8T |
210-235 |
140-220 |
220-280 |
7.0-12.0 |
IEC-7/21 |
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Y23 |
330-355 |
220-250 |
250-280 |
20.0-26.0 |
IEC-20/19 |
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Y26H |
365-385 |
235-255 |
240-265 |
23.5-28.0 |
TDK-FB3X |
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Y27 |
340-360 |
260-295 |
310-370 |
22.0-25.5 |
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Y28 |
390-400 |
235-245 |
240-260 |
26.5-30.0 |
IEC-26/18 |
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Y30H-1A |
392-400 |
270-290 |
275-300 |
28.0-31.0 |
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|
Y30H-1B |
390-400 |
255-270 |
260-290 |
27.5-30.0 |
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Y30H-2 |
395-415 |
275-300 |
310-335 |
28.5-32.0 |
TDK-FB5H |
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Y33 |
410-430 |
220-250 |
225-255 |
31.5-35.0 |
TDK-FB4X |
|
Y34A |
400-410 |
245-265 |
250-275 |
30.0-35.0 |
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Y34B |
395-400 |
255-275 |
260-285 |
39.0-34.0 |
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