Sintered Tungsten Bar for Catalyst Substrates
Unwrought sintered tungsten bars used as substrates for chemical reactor catalysts in ammonia synthesis. These bars are obtained simply by sintering and have not been subjected to further processing, making them classifiable as unwrought tungsten under tariff item 8101.94.00.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the bars are machined or shaped for specific catalyst applications
Machined or shaped tungsten articles are classified as other articles, not unwrought.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Document that the bars are in their sintered state without additional working to avoid reclassification
• Include technical specifications showing the sintering process in your import documentation
• Check if the bars meet Canadian standards for chemical reactor materials
Related Products under Tariff item 8101.94.00
High-Purity Sintered Tungsten Rod for Thermocouples
High-purity sintered tungsten rods of 99.95% purity, used as raw material for Type C thermocouples in high-temperature furnaces and kilns. These rods are obtained simply by sintering and have not been further worked, qualifying them as unwrought tungsten under tariff item 8101.94.00.
Pure Sintered Tungsten Rod for EDM Electrodes
High-density tungsten rods sintered for use in electrical discharge machining (EDM) electrodes. These rods are obtained simply by sintering and have not been further worked, making them unwrought tungsten under tariff item 8101.94.00.
Sintered Tungsten Bar Stock for Heat Sinks
Unwrought tungsten bars produced by sintering, used as raw stock for heat sinks in electronics and military applications. These bars are obtained simply by sintering and have not been further worked, qualifying them under tariff item 8101.94.00 as unwrought tungsten.
Sintered Tungsten Billet for Armor Penetrators
Large sintered tungsten billets used as raw material for kinetic energy penetrators in military applications. These billets are obtained simply by sintering and have not been further worked, making them unwrought tungsten under tariff item 8101.94.00.
Sintered Tungsten Ingot for X-Ray Shielding
Massive sintered tungsten ingots used as raw material for radiation shielding in medical and industrial X-ray equipment. These ingots are obtained simply by sintering and have not been further worked, qualifying them as unwrought tungsten under tariff item 8101.94.00.
Sintered Tungsten Rod for Lamp Filaments
High-purity tungsten rods produced by powder metallurgy sintering, used in manufacturing incandescent and halogen lamp filaments. These rods are obtained simply by sintering and have not been further worked, qualifying them as unwrought tungsten under tariff item 8101.94.00.