Containing by weight more than 50% of free carbon
Articles of stone or of other mineral substances (including carbon fibres, articles of carbon fibres and articles of peat), not elsewhere specified or included. > Other articles: > Other > Other > Containing by weight more than 50% of free carbon
Duty Rate (from China)
Products classified under Tariff item 6903.10.00.00
Carbon Crucible for Aluminum Die Casting
A large graphite crucible engineered for melting aluminum alloys in die casting operations. It contains more than 50% free carbon by weight and is fired after shaping, qualifying as a refractory ceramic good under this tariff item. Designed to withstand temperatures up to 1400°C in non-ferrous foundry environments.
6903.10.00Carbon Graphite Nozzle for Continuous Casting
A refractory graphite nozzle used in steel continuous casting to regulate molten metal flow. Composed of more than 50% free carbon by weight and fired at high temperatures, it meets the definition of a refractory ceramic good. Essential for controlling metal flow in industrial steel production.
6903.10.00Graphite Crucible for Metal Melting
A high-density graphite crucible designed for melting precious metals such as gold and silver in foundry operations. It contains over 50% free carbon by weight and is fired after shaping from inorganic non-metallic materials including graphite. Suitable for high-temperature metal processing applications.
6903.10.00Graphite Immersion Heater Tube
A protective graphite sheath tube for immersion heaters used in molten metal baths. Its high free carbon content, exceeding 50% by weight, provides corrosion resistance in aggressive environments. Fired after shaping, it qualifies as a refractory ceramic good under this tariff item.
6903.10.00Graphite Slide Gate Refractory for Steel Ladles
Slide gate plates made from high-carbon graphite for controlling molten steel flow in ladles. They exceed 50% free carbon content and are fired ceramic refractory goods designed for extreme temperatures. Critical components in steelmaking operations for precise flow control.
6903.10.00Graphite Stopper Rod for Molten Metal Pouring
A refractory graphite stopper rod used to control molten steel pouring from ladles. With high free carbon content exceeding 50%, it offers thermal shock resistance after the ceramic firing process. Standard equipment in foundries for precise metal flow regulation.
6903.10.00High-Carbon Graphite Retort for Laboratory Use
A sealed graphite retort vessel for high-temperature chemical reactions and distillation processes. It contains over 50% free carbon and is fired after shaping, meeting Chapter 69 requirements. Used in analytical and research laboratories for demanding thermal applications.
6903.10.00High-Purity Graphite Cupel for Fire Assay
Specialized graphite cupels used in fire assay for precious metal analysis. They contain over 50% free carbon and are fired after shaping for analytical laboratory use. These cupels absorb the lead button during precious metal parting, ensuring accurate results.