SM-0478103 Sintered AlNiCo Short Block Magnets 6.35×6.35×25.4mm
Features
· Premium AlNiCo with Superior Thermal Stability: Engineered from high-grade sintered AlNiCo, these short block magnets maintain stable magnetic performance across an extremely wide temperature range, with a Curie temperature exceeding 850°C and minimal magnetic loss 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 consistent performance in industrial sensors, aerospace systems, and high-temperature processing equipment.
· Natural Corrosion Resistance (Uncoated Construction): AlNiCo’s metallic composition offers inherent resistance to oxidation, rust, and environmental wear, eliminating the need for electroplating or protective coatings. This uncoated design preserves the magnet’s structural integrity and magnetic properties over decades of use, reducing maintenance costs and ensuring long-term reliability in humid, industrial, or outdoor conditions where coated magnets may degrade or flake over time.
· Precision 6.35×6.35×25.4mm Rectangular Form Factor: The compact square-bar geometry (6.35×6.35mm cross-section, 25.4mm length) is precision-machined to strict dimensional tolerances, making these magnets ideal for integration into miniaturized assemblies, sensor housings, and precision instruments. Their small size allows for seamless installation in space-constrained applications, while the rectangular shape ensures uniform magnetic field distribution for consistent performance.
· 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 speed sensors, flow meters, and aerospace navigation systems, where consistent magnetic output is required for accurate, repeatable measurements, even in variable operating conditions.
· High Mechanical Durability & Structural Integrity: AlNiCo’s dense, sintered structure provides excellent mechanical strength and low brittleness compared to ceramic or rare-earth magnets, making these short block magnets resistant to chipping, cracking, and damage during installation, handling, or high-vibration operation. Their robust composition also ensures structural stability under mechanical stress, making them suitable for use in dynamic industrial assemblies.
· Versatile Industrial Application Compatibility: These 6.35×6.35×25.4mm AlNiCo magnets are widely used in high-temperature sensors, aerospace instrumentation, industrial automation equipment, magnetic switches, and mini motor assemblies. Their combination of thermal stability, corrosion resistance, and compact form factor makes them suitable for both general industrial and specialized precision applications, from automotive electronics to laboratory instrumentation.
· RoHS-Compliant & Environmentally Sustainable: Constructed from lead-free AlNiCo alloy, the magnets meet international RoHS environmental standards, free of harmful substances. Their long operational life and corrosion resistance reduce replacement frequency, minimizing environmental impact compared to lower-durability magnet alternatives, making them a sustainable choice for long-term industrial applications.
Product Details
Introduction
These precision-engineered AlNiCo short block magnets, sized at 6.35×6.35×25.4mm (1/4" × 1/4" × 1"), are premium aluminum-nickel-cobalt permanent magnets purpose-built for compact, high-precision applications across industrial, aerospace, and electronic sectors. Crafted from high-grade sintered AlNiCo, they deliver consistent magnetic flux density, excellent coercivity, and exceptional long-term stability, even under extreme temperature fluctuations and prolonged operational cycles. Their compact rectangular form factor is optimized for linear magnetic circuits, sensor assemblies, and miniaturized systems, offering reliable magnetic performance in a small footprint. Unlike rare-earth magnets that require protective coatings, AlNiCo’s inherent metallic composition provides natural corrosion resistance, eliminating the risk of coating degradation in humid or mildly corrosive environments. Each magnet undergoes rigorous quality control, including dimensional verification, magnetic performance testing, and surface inspection, ensuring tight tolerances, uniform properties, and reliable fit in mass-produced systems, making them ideal for high-temperature sensors, aerospace components, and industrial automation equipment.