6804.22 - Of other agglomerated abrasives or of ceramics:

This HTS category, 6804.22, encompasses millstones, grindstones, grinding wheels, and similar abrasive articles that are made from materials other than agglomerated diamond or natural stone. These items are designed for a variety of abrasive applications, including grinding, sharpening, polishing, trueing, and cutting. The defining characteristic of this category is its exclusion of goods composed primarily of natural stone or agglomerated synthetic or natural diamond, directing those items to sibling subheadings.

To differentiate, subheading 6804.21.00.00 specifically covers articles made of agglomerated synthetic or natural diamond, which are known for their exceptional hardness and wear resistance. Similarly, subheading 6804.23.00.00 is reserved for articles manufactured from natural stone. Therefore, HTS 6804.22 is the catch-all for abrasive articles where the abrasive component is derived from other agglomerated materials or is ceramic-based.

Within this broader category, further distinctions are made based on the bonding agent used. The subheading 6804.22.10.00 specifically addresses articles that are bonded with synthetic resins, which offer a range of properties depending on the specific resin used. The subsequent "Other" classification accounts for abrasive articles within this scope that do not utilize synthetic resins as their primary bonding agent, potentially employing other binders such as vitrified bonds or rubber.