SM-0478102 Half-Red-Painted AlNiCo Cylinder Magnets D8.3(7.35)×23.5mm, Polarity-Marked Sintered Rod Magnets for Education & Precision Applications

·  Premium AlNiCo Alloy with Superior Thermal Stability: Engineered from high-grade sintered AlNiCo, these magnets maintain stable magnetic performance across a wide temperature range, with minimal magnetic loss even at continuous operating temperatures up to 500°C. This makes them ideal for high-temperature environments where neodymium or ferrite magnets would suffer irreversible demagnetization, ensuring reliable performance in industrial sensors, educational labs, and precision equipment.

·  Half-Red-Painted Polarity Marking for Clear Identification: The unique half-red-painted design clearly distinguishes the north pole, making these magnets ideal for teaching magnetic polarity, conducting field experiments, and assembling magnetic circuits. The bright red coating eliminates the need for additional polarity testing, streamlining setup and reducing errors in both educational and industrial applications. The glossy enamel finish also provides corrosion resistance, protecting the AlNiCo alloy from oxidation and scratches.

·  Precision D8.3(7.35)×23.5mm Cylindrical Form Factor: The compact, precision-machined rod profile (nominal diameter 8.3mm, actual 7.35mm, height 23.5mm) is optimized for integration into sensor assemblies, lab equipment, and miniaturized systems. The cylindrical shape ensures uniform magnetic field distribution, making these magnets suitable for handheld demonstrations, light-duty magnetic holding tasks, and precision instrumentation.

·  Consistent Magnetic Performance & Low Temperature Drift: Sintered AlNiCo exhibits a very low temperature coefficient of remanence, meaning its magnetic flux density changes minimally with temperature fluctuations. This stability is critical for precision applications like educational experiments and industrial sensor systems, where consistent magnetic output is required for accurate, repeatable results.

·  High Mechanical Durability & Impact Resistance: The dense sintered AlNiCo structure offers excellent mechanical strength, while the red enamel paint adds a protective layer that resists chipping and cracking during handling or accidental impacts. This durability makes these magnets suitable for frequent use in classrooms, workshops, and industrial environments where magnets may be dropped or handled roughly.

These half-red-painted AlNiCo cylinder magnets, precision-engineered at D8.3(7.35)×23.5mm, are premium aluminum-nickel-cobalt permanent magnets designed for educational demonstrations, magnetic polarity identification, and precision industrial applications. Crafted from high-grade sintered AlNiCo alloy, they deliver consistent magnetic flux density, excellent coercivity, and exceptional long-term stability, even under temperature fluctuations and repeated use. The unique half-red-painted design clearly marks the north pole, eliminating guesswork during experiments or assembly, while the glossy red enamel coating offers enhanced corrosion resistance and a durable, easy-to-clean surface. The cylindrical form factor provides uniform magnetic field distribution, and the precision-machined dimensions ensure seamless integration into sensor assemblies, lab equipment, and miniaturized systems. Each magnet undergoes rigorous quality control, including dimensional verification, magnetic performance testing, and coating inspection, ensuring tight tolerances, uniform properties, and reliable performance in both educational and industrial settings.