8505.11.00.10 - Alnico

This HTS category, 8505.11.00.10, specifically covers Alnico permanent magnets. Alnico is an alloy composed primarily of aluminum, nickel, and cobalt, often with additions of iron, copper, and titanium, known for its strong magnetic properties and excellent thermal stability. These magnets are typically cast or sintered and are widely used in applications requiring persistent magnetic fields, such as in electric motors, generators, loudspeakers, and various industrial holding devices where high coercive force and resistance to demagnetization are critical.

It is important to distinguish this category from its siblings. While all are permanent magnets made of metal, 8505.11.00.10 is narrowly defined for Alnico alloys. Other metal permanent magnets at this level, such as sintered samarium-cobalt (8505.11.00.50) and sintered neodymium-iron-boron (8505.11.00.70), are composed of different elemental constituents and exhibit distinct magnetic characteristics, often with higher energy products or different operating temperature ranges. The "Other" category (8505.11.00.90) serves as a residual for any metal permanent magnets not specifically classified.

As this is a leaf node, there are no further subcategories. Classification under 8505.11.00.10 is determined by the material composition of the permanent magnet, specifically identifying it as an Alnico alloy. The physical form (cast or sintered) and intended end-use are secondary to the material definition for definitive classification within this specific sub-heading.