About HS Code 690390
This is the residual HS code for all other refractory ceramic goods, not being bricks, blocks, or tiles, that do not fit the specific compositional criteria of 690310 (free carbon) or 690320 (alumina/silica). This broad category encompasses a wide array of highly specialized refractory shapes, components, and articles made from various advanced ceramic materials like zirconia, silicon carbide, chromia, or complex composites. These items are used in extremely demanding, niche industrial applications where specific properties beyond standard refractories are required, such as in aerospace, chemical processing, or specialized metallurgical operations. Importers are highly specialized industries seeking bespoke high-performance ceramic solutions. Exporters are advanced ceramic manufacturers with expertise in producing these complex and often custom-engineered materials. Their trade reflects the cutting-edge of materials science and industrial innovation.
Products Under This Code
Zirconia crucibles, Silicon carbide kiln furniture, Chromia-based nozzles, Boron nitride components, Fused cast zirconia shapes, Reaction-bonded silicon carbide parts, Ceramic foam filters
Real World Examples
Saint-Gobain ZirPro zirconia components, Morgan Advanced Materials silicon carbide products, CoorsTek advanced ceramic shapes, Vesuvius ceramic filters
Common Misclassification
This is the catch-all for non-constructional refractory ceramic goods not covered by 690310 or 690320. It can be confused with 690290 if the item is a brick/block, or with 681599 if the article is mineral-based but not truly ceramic.
Products Classified Under 6903.90
Trade Overview
Germany, Japan, and China are prominent exporters of these highly specialized refractory ceramic goods, serving global high-tech and niche industrial markets.
Frequently Asked Questions
What is HS code 690390?
HS code 690390 covers: Refractory ceramic goods; composition of which n.e.c. in heading no. 6903, other than those of siliceous fossil meals or similar earths. This is the residual HS code for all other refractory ceramic goods, not being bricks, blocks, or tiles, that do not fit the specific compositional criteria of 690310 (free carbon) or 690320 (alumina/silica). This broad category encompasses a wide array of highly specialized refractory shapes, components, and articles made from various advanced ceramic materials like zirconia, silicon carbide, chromia, or complex composites. These items are used in extremely demanding, niche industrial applications where specific properties beyond standard refractories are required, such as in aerospace, chemical processing, or specialized metallurgical operations. Importers are highly specialized industries seeking bespoke high-performance ceramic solutions. Exporters are advanced ceramic manufacturers with expertise in producing these complex and often custom-engineered materials. Their trade reflects the cutting-edge of materials science and industrial innovation.
What products fall under HS code 690390?
Zirconia crucibles, Silicon carbide kiln furniture, Chromia-based nozzles, Boron nitride components, Fused cast zirconia shapes, Reaction-bonded silicon carbide parts, Ceramic foam filters
What are common misclassifications for HS code 690390?
This is the catch-all for non-constructional refractory ceramic goods not covered by 690310 or 690320. It can be confused with 690290 if the item is a brick/block, or with 681599 if the article is mineral-based but not truly ceramic.
How is HS code 690390 structured?
HS code 690390 is a 6-digit subheading under the Harmonized System. The first 2 digits (69) identify the chapter, digits 3-4 (03) identify the heading, and digits 5-6 (90) specify the subheading. This code is standardized globally by the World Customs Organization.