6902.10.50.00 - Other

This HTS category, 6902.10.50.00, encompasses "Other" refractory ceramic constructional goods that fall within the broader scope of Chapter 69. These are goods intended for use in environments requiring high resistance to heat, such as furnaces, kilns, and industrial incinerators. Specifically, this classification applies to refractory bricks, blocks, tiles, and similar articles that contain, by weight, more than 50 percent of magnesium (expressed as MgO), calcium (expressed as CaO), or chromium (expressed as Cr2O3), either singly or in combination.

The key differentiator for this category from its sibling, 6902.10.10.00 (Magnesite bricks), lies in the inclusion of materials beyond just magnesite. While magnesite bricks are a specific type of refractory article meeting the elemental composition requirements, this "Other" category captures a wider range of refractory ceramic constructional goods that also meet the 50% threshold for MgO, CaO, or Cr2O3, but are not exclusively magnesite-based. This includes articles that might incorporate significant amounts of calcium or chromium oxides along with or instead of magnesium oxide, provided the overall elemental content requirement is met.

As a leaf node, this classification does not have further subdivisions. Therefore, practical classification under this HTS code relies on confirming that the refractory ceramic constructional goods, not otherwise specified as magnesite bricks, satisfy the specified weight percentage of magnesium, calcium, or chromium oxides. Examples could include refractory tiles with a high percentage of calcium aluminate or chromium oxide compositions, intended for lining high-temperature industrial equipment.