Description
FRIDGE MAGENTS
18x5mm Y30BH Uncoated Ferrite Disc Magnet
Ferrite magnets offer a low cost and corrosion free performance that last. Ferrite magnets are extremely popular due to their characteristics. Being made from oxides of iron, they simply do not corrode when placed in water. They are therefore regarded as corrosion free. For long term performance, they are superb; if looked after they can exceed most products lifecycles.
Ferrite Magnets resist chemical attacks from many of the alkaline solutions, dilute acids, organic solvents, and some hydroxides. They are fine for use in salt water conditions (no corrosion issues at all).
They do not need a coating but have been known to be coated only in specialist applications where any ferrite surface dust is not wanted. An example where coating may be required is in medical applications.
Ferrite magnets are naturally a darker grey colour and are often referred to as having a "pencil lead" colour.
PRODUCT SPECIFICATIONS:
| Material: | Ceramic, iron oxide (Fe2O3) |
| Dimensions: | 18mm diameter x 5mm thick. |
| Shape: | Disc / Round |
| QTY: | 4 Pcs |
| Coating: | Uncoated |
| Grading: | Y30BH |
| Tolerance: | +/- 0.1 |
| Maximum temperature: | Ferrite magnets can be used at temperatures up to a maximum of +180 degrees Celsius |
| Pulling Force: | |
| Colour: | Dark grey |
| Direction of Magnetism: | Through the thickness. |
Image: Direction of magnetism
Pros and cons:
|
Pros: -Can withstand higher temperatures |
|
Cons: -Brittle (May break, crack, or chip upon sudden collisions with other magnets or metals.) -Not as strong as the Neodymium Magnets |
Applications of Ferrite Magnets:
| Acoustic field: the speaker, receiver, microphone, alarm, stage audio, guitar pick-ups, car audio etc. |
| Electronics: permanent magnetic actuator vacuum circuit breakers, magnetic relays, meter sound meter, a reed switch, sensors. |
| Machinery and equipment: magnetic separation, magnetic crane, magnetic machinery. |
| Other industries: magnetized Wax, pipe descaling, magnetic fixture, automatic mah-jong machine, magnetic locks, doors and for windows magnetic, magnetic luggage, leather magnetic toys, magnetic tools, gifts, craft project, diy, jewelry, office and packaging. |