Permanent Magnets
Permanent magnets retain constant magnetism after being magnetized. NdFeB magnets, a type of artificial permanent magnet, exhibit the strongest magnetic force at room temperature and are widely used across various industries, particularly in technology and energy sectors. Ferrite, a non-metallic magnetic material made from sintered Fe₂O₃ and other metal oxides, is suitable for high-frequency electromagnetic devices due to its high permeability and low eddy current loss. AlNiCo magnets, the first developed permanent magnets, are alloys of aluminum, nickel, cobalt, and iron, commonly used in instruments, electric motors, and pickups. SmCo magnets, made from samarium and cobalt, have a high magnetic energy product and can operate at temperatures up to 350°C, making them ideal for aerospace, military, and medical applications. Each of these four permanent magnet products types has unique material compositions, performance characteristics, and applications. As a professional permanent magnets manufacturer, Senz Magnet provides various types of magnet products and custom permanent magnets. Welcome to contact us!
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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 perform
These red-painted AlNiCo cylinder magnets, precision-engineered at D45×25mm with a central mounting hole, are premium aluminum-nickel-cobalt permanent magnets designed for educational demonstrations, industrial holding tasks, and high-temperature environments. Crafted from high-grade sintered AlNiCo , they deliver strong, stable magnetic flux density, excellent coercivity, and exceptional long-term stability, even under extreme temperature fluctuations and repeated use. The cylindrical form factor provides uniform magnetic field distribution, while the glossy red enamel paint offers clear visual identification, enhanced corrosion resistance, and a durable, easy-to-clean surface. The central mounting hole allows for secure attachment to stands or equipment, making these magnets versatile for both handheld and fixed applications. Each magnet undergoes rigorous quality control, including dimensional verification, magnetic performance testing, and coating inspection, ensuring tight toleran
These sintered AlNiCo small cylinder magnets, precision-engineered to D6.35×6.35mm (1/4" × 1/4"), are premium aluminum-nickel-cobalt permanent magnets designed for compact, high-precision applications across industrial, aerospace, and electronic industries. Crafted from high-grade AlNiCo alloy, they deliver consistent magnetic flux density, excellent coercivity, and exceptional long-term stability, even under extreme temperature fluctuations and prolonged operational cycles. Their compact cylindrical form factor is optimized for miniaturized assemblies, sensor systems, and precision instruments, offering reliable magnetic performance in a tiny 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.
These red-painted AlNiCo U-shaped horseshoe magnets, precision-engineered at 45×30×30mm with a Φ5mm mounting hole, are compact, high-performance aluminum-nickel-cobalt permanent magnets designed for educational demonstrations, light-duty industrial holding, and hobbyist applications. Crafted from premium sintered AlNiCo alloy, they deliver strong, concentrated magnetic fields, excellent coercivity, and long-term stability, even with repeated use and temperature fluctuations. The classic horseshoe design maximizes magnetic flux between the two poles, creating a powerful, focused holding force, while the glossy red enamel paint provides clear visual identification, enhanced corrosion resistance, and a durable, easy-to-clean surface. Unlike uncoated magnets, the red paint layer protects the AlNiCo alloy from oxidation, scratches, and environmental wear, extending service life in classrooms, workshops, and lab environments.
These sintered AlNiCo square block magnets, precision-engineered to 59×59×15mm with a central Φ9mm through-hole, are premium aluminum-nickel-cobalt permanent magnets purpose-built for heavy-duty industrial, high-temperature, and precision engineering applications. Crafted from high-grade AlNiCo alloy, they deliver exceptional magnetic flux density, consistent coercivity, and outstanding long-term stability, even under extreme temperature fluctuations, high vibration, and prolonged operational cycles. The custom square profile with a precisely machined central hole is optimized for secure, aligned mounting, enabling seamless integration into fixtures, machinery, and specialized assemblies while preserving uniform magnetic performance. Unlike rare-earth magnets that rely on protective coatings, AlNiCo’s inherent metallic composition provides natural corrosion resistance, eliminating the risk of coating degradation in humid, industrial, or mildly corrosive environments.
These precision-engineered flat rectangular AlNiCo bar magnets, sized at 58×3×11.7mm, are premium aluminum-nickel-cobalt permanent magnets designed for applications requiring exceptional thermal stability, consistent magnetic performance, and long-term reliability. Crafted from high-grade sintered AlNiCo alloy, they deliver strong magnetic flux density, excellent coercivity, and minimal magnetic drift, even under extreme temperature fluctuations and prolonged operational cycles. Their flat, elongated rectangular profile is optimized for linear magnetic circuits, sensor assemblies, and industrial fixtures, offering a high surface-area-to-volume ratio for efficient magnetic field distribution. Unlike rare-earth magnets that rely on protective coatings, AlNiCo’s inherent metallic composition provides natural corrosion resistance, eliminating the risk of coating degradation in humid or mildly corrosive environments.
These diametrally magnetized AlNiCo ring magnets, precision-engineered at 20×10×4mm, are premium permanent magnets crafted from high-grade AlNiCo alloy, designed for applications requiring consistent, directional magnetic fields and exceptional long-term stability. Manufactured via advanced sintering technology, they feature a hollow ring profile with strict dimensional tolerances, optimized for diametrally magnetization that delivers a uniform magnetic field around the central axis—an essential characteristic for precision sensors, flow meters, and rotational machinery. AlNiCo’s inherent thermal stability, natural corrosion resistance, and low temperature coefficient make these magnets ideal for use in environments where fluctuating temperatures and harsh operating conditions would degrade other magnet materials. The uncoated, smooth metallic finish preserves the magnet’s structural integrity and magnetic properties, eliminating the risk of coating degradation over tim
These uncoated AlNiCo block magnets, precision-engineered to 32×32×40mm with custom grooved profiles, represent a premium class of permanent magnets engineered for extreme-temperature environments and precision industrial applications. Crafted from high-performance aluminum-nickel-cobalt (AlNiCo) —renowned for its exceptional thermal stability and inherent corrosion resistance—these magnets deliver robust magnetic flux density, high coercivity, and long-term operational reliability without the need for surface plating or coating. Unlike rare-earth magnets that require protective coatings, AlNiCo’s natural metallic composition resists oxidation, rust, and environmental degradation, making these magnets ideal for use in harsh industrial settings, precision sensors
These N38 grade zinc-plated neodymium (NdFeB) rectangular block magnets, precision-sized at 47×11×10mm, are premium rare-earth permanent magnets engineered for heavy-duty industrial, mechanical, and structural applications. Manufactured from high-quality sintered NdFeB material, they deliver exceptional magnetic strength, consistent magnetic flux, and reliable coercivity in a robust, elongated rectangular form factor, making them ideal for applications requiring powerful, long-lasting holding force in linear or structural assemblies. The professional, uniform zinc plating provides superior corrosion resistance, excellent environmental durability, and cost-effective surface protection, ensuring long-term performance and stability even in humid, industrial, or outdoor operating conditions. Each magnet is precision-machined to strict dimensional tolerances, guaranteeing uniform size, shape, and magnetic properties across every production batch, with consistent flatness and surface finish
These zinc-plated neodymium (NdFeB) round magnets with precision-machined conical countersunk holes are premium rare-earth permanent magnets, engineered for robust, secure mounting in industrial, mechanical, and structural applications. Manufactured from high-grade sintered NdFeB material, they deliver exceptional magnetic strength, consistent magnetic flux, and reliable holding force in a durable circular form factor, making them ideal for heavy-duty holding, mounting, and assembly applications where a flush, secure fastener fit is critical. The professional, uniform zinc plating provides superior corrosion resistance, excellent environmental durability, and cost-effective surface protection, ensuring long-term performance and stability even in humid, industrial, or outdoor operating conditions. Each magnet is precision-machined to strict dimensional tolerances, with a precisely tapered conical hole engineered to accommodate standard countersunk screws, creating a flush, streamlined f
These N42H grade NiCuNi triple-layer plated neodymium (NdFeB) micro block magnets, precision-engineered at 2×1.2×4.5mm, represent the pinnacle of miniaturized permanent magnet technology, purpose-built for ultra-compact, high-performance applications. Manufactured from premium sintered NdFeB material with N42H high-coercivity formulation, these miniature magnets deliver exceptional magnetic flux density, outstanding thermal stability, and reliable holding force in an ultra-small footprint, making them indispensable for modern miniaturized electronics, medical devices, and precision sensors. The industry-standard NiCuNi triple-layer coating provides unrivaled corrosion resistance, superior mechanical durability, and excellent solderability, ensuring long-term performance and reliability even in demanding, space-constrained operating environments. Each micro magnet is manufactured to ultra-tight dimensional tolerances, with rigorous quality control for magnetic properties, surface finish
These N35 grade zinc-plated neodymium (NdFeB) square block magnets, precision-sized at 12.9×12×4mm, are premium rare-earth permanent magnets engineered for versatile, reliable performance across a wide range of industrial, commercial, and consumer applications. Manufactured from high-quality sintered NdFeB material, they deliver exceptional magnetic strength, consistent magnetic flux, and reliable coercivity in a compact, easy-to-integrate square form factor, making them ideal for applications where space efficiency and powerful holding force are critical. The professional, uniform zinc plating provides superior corrosion resistance, excellent environmental durability, and cost-effective surface protection, ensuring long-term performance and stability even in humid, industrial, or mildly corrosive operating conditions. Each magnet is precision-machined to strict dimensional tolerances, guaranteeing uniform size, shape, and magnetic properties across every production batch, with consist
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E-mail: iris@senzmagnet.com
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