The Ferrite Bar Magnet 40x25x10mm is a ceramic ferrite block magnet measuring 40mm long, 25mm wide, and 10mm thick, in the classic bar magnet form, naturally black in color without any surface coating, weighing 25 grams. This Ferrite magnet is the traditional bar magnet form used in school physics laboratories for decades — its elongated block shape with north and south magnetic poles on opposite short faces makes it ideal for demonstrating magnetic field lines using iron filings, deflecting a compass needle, and teaching the fundamental principles of magnetism in STEM education.
Unlike the silver-coated neodymium magnets covered separately, these Ceramic bar magnets get their black color from the ferrite ceramic material itself — ferrite is an iron oxide compound that is inherently corrosion-resistant and requires no protective plating, unlike neodymium which rusts without its nickel coating. This Rectangular ceramic magnet’s 40×25mm face provides a substantial pole area for strong attraction to ferromagnetic surfaces at close range, while the 10mm thickness gives it a robust hand-holdable body suited to repeated classroom handling.
this Ceramic magnets ferrite block produces lower magnetic flux density than a neodymium block of identical dimensions — ferrite suits science demonstrations and moderate-force applications where lower cost and long-term durability matter more than maximum field strength. Available from StemVolt, offering quality robotics parts and electronics components at competitive prices.
Related Product:
- Checkout Science Magnets Set
Features:
- Naturally black ceramic — no coating required, inherently corrosion-resistant
- 40mm length suits school lab demonstrations and iron filing field maps
- 25g robust body withstands repeated classroom and DIY handling
- Lower cost than neodymium for moderate-force educational use
Technical Specifications:
Applications:
- Ferrite Bar used for school physics lab iron filing field line demo
- College project uses Ceramic bar magnets for N-S polarity demonstration
- STEM model uses Ceramic magnets for magnetic field mapping experiment
- DIY project uses ferrite bar magnet 40mm for magnetic assembly build
Package Includes:
- 1 × Ferrite Bar Magnet 40x25x10mm
Pradip Bhowmik –
Purchased this magnet for a school competition project. Same-day shipping, easy checkout, and helpful pre-sale support made the entire experience smooth and enjoyable.
Ajith Pillai –
100% genuine product with secure packaging.
Sathish Doss –
Highly recommended for school competition projects.