Clay Refractory Crucible
A high-temperature clay crucible used for melting metals in foundries and laboratories. It is shaped from refractory clay and fired above 800°C, qualifying as a refractory ceramic good under HTS 6903.90.00.10 due to its clay composition and non-siliceous earth material.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing >50% alumina or silica
High-alumina or siliceous clay compositions shift to heading 6902 for specific refractory bricks and shapes.
If made primarily of alumina or silica
Non-clay refractory goods like those with dominant alumina fall under separate subheadings in 6903.
If containing carbon, graphite or other non-clay materials
Carbon-containing refractory articles are classified in Chapter 68, heading 6815.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify firing temperature exceeds 800°C with manufacturer certification to confirm Chapter 69 classification
• Include technical specs on clay composition and refractory properties in commercial invoice to avoid misclassification
Related Products under HTS 6903.90.00.10
Clay Refractory Nozzle
Refractory clay nozzle for steel continuous casting, enduring extreme molten metal temperatures. Fired from special refractory clays, it fits HTS 6903.90.00.10 as an 'other' refractory ceramic good explicitly listed as nozzles.
Clay Refractory Tube
High-temperature clay tubes for kiln furniture and thermocouple sheaths. Fired refractory clay construction places it under HTS 6903.90.00.10 as listed 'tubes' other than siliceous types.
Clay Refractory Kiln Shelf
Heavy-duty clay shelves for supporting pottery in industrial kilns. As 'supports' explicitly mentioned in heading 6903, pure clay versions fall under statistical reporting number 6903.90.00.10.
Clay Retort for Laboratory
Traditional clay retorts used in chemical distillation processes at high temperatures. Fired clay construction qualifies as refractory goods under 6903.90.00.10 per heading examples.
Clay Refractory Rod
Fired clay rods used as stirring tools and supports in high-temperature furnaces. As named 'rods' in heading 6903 other refractory goods, clay composition dictates 6903.90.00.10.
Clay Cupel for Assay
Small clay cupels used in precious metal fire assaying to collect beads. Traditional fired clay construction fits 6903.90.00.10 as explicitly named refractory goods.