About HS Code 250850
This HS code covers andalusite, kyanite, and sillimanite clays, whether or not calcined, excluding expanded clays. These three minerals are polymorphs of aluminosilicate, highly valued in international trade for their exceptional refractory properties and their ability to transform into mullite at high temperatures. They are critical raw materials in the production of high-performance refractories, advanced ceramics, and metallurgical applications where extreme heat resistance, chemical stability, and low thermal expansion are paramount. Importers are typically advanced manufacturing industries in countries like China, Japan, and Germany, seeking materials for high-temperature furnaces, kilns, and specialized components. Exporters are countries with specific geological deposits, such as South Africa (andalusite), India (kyanite, sillimanite), and the USA. Purity, grain size, and the specific mineral form are crucial trade specifications.
Products Under This Code
Andalusite concentrate, kyanite sand, sillimanite lumps, calcined kyanite, refractory grade andalusite, mullite precursors, sillimanite flour.
Real World Examples
Imerys Refractory Minerals (andalusite, kyanite), LKAB Minerals (sillimanite), Minco (kyanite), Andalusite Resources, Damrec.
Common Misclassification
These are often confused with mullite (250860) as they are its precursors, or with other high-alumina refractory materials (e.g., bauxite 260600) if not specifically identified as aluminosilicate polymorphs.
Products Classified Under 2508.50
Industry
This code belongs to the Minerals & Fuels industry.
Trade Overview
China, Japan, and Germany are major importers, with South Africa, India, and the USA being key exporters of these minerals.
Frequently Asked Questions
What is HS code 250850?
HS code 250850 covers: Clays (excluding expanded clays of heading no. 6806); andalusite, kyanite and sillimanite, whether or not calcined. This HS code covers andalusite, kyanite, and sillimanite clays, whether or not calcined, excluding expanded clays. These three minerals are polymorphs of aluminosilicate, highly valued in international trade for their exceptional refractory properties and their ability to transform into mullite at high temperatures. They are critical raw materials in the production of high-performance refractories, advanced ceramics, and metallurgical applications where extreme heat resistance, chemical stability, and low thermal expansion are paramount. Importers are typically advanced manufacturing industries in countries like China, Japan, and Germany, seeking materials for high-temperature furnaces, kilns, and specialized components. Exporters are countries with specific geological deposits, such as South Africa (andalusite), India (kyanite, sillimanite), and the USA. Purity, grain size, and the specific mineral form are crucial trade specifications.
What products fall under HS code 250850?
Andalusite concentrate, kyanite sand, sillimanite lumps, calcined kyanite, refractory grade andalusite, mullite precursors, sillimanite flour.
What are common misclassifications for HS code 250850?
These are often confused with mullite (250860) as they are its precursors, or with other high-alumina refractory materials (e.g., bauxite 260600) if not specifically identified as aluminosilicate polymorphs.
How is HS code 250850 structured?
HS code 250850 is a 6-digit subheading under the Harmonized System. The first 2 digits (25) identify the chapter, digits 3-4 (08) identify the heading, and digits 5-6 (50) specify the subheading. This code is standardized globally by the World Customs Organization.