Chromite Investment Casting Shells
Chromite investment casting shells are pre-made ceramic shells with chromite flour stucco, used in precision investment casting for aerospace and turbine blades. They contain chromite, a specified mineral in this tariff item, and are refractory constructional products. They are not excluded by Chapter 68 notes as they are not tools or parts of tools of Chapter 82.
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 shells are not specifically for metallurgical coke, iron, or steel production.
This sibling item covers other articles containing chromite not meeting the specific refractory constructional use.
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
• Ensure the shells are classified as refractory constructional products for metallurgical use; provide technical data sheets to CBSA
• Verify the chromite content and that they are not considered tools or parts of tools
• Keep records of the end-use in aerospace or turbine production
Related Products under Tariff item 6815.91.10
Chromite Mullite Composite Refractories
Chromite mullite composite refractories are composite shapes blending chromite and mullite, used in glass tank regenerator checkerwork. They contain chromite and are refractory constructional products for high-temperature industrial use. They fall under this tariff item as they are not excluded by Chapter 68 notes.
Chromite Sand for Metal Casting Molds
Chromite sand for metal casting molds is foundry-grade sand used as mold facing material. It contains chromite and is an article of mineral substances, not excluded by Chapter 68 notes. It is used in metal casting, which aligns with the metallurgical use requirement.
Dolime-Based Heat Insulation Boards
Dolime-based heat insulation boards are rigid panels made from dolime aggregates for high-temperature industrial ovens. They contain dolomite in dolime form and are fabricated articles. They are not excluded by Chapter 68 notes and are used in industrial heating applications.
Dolime Flux Additive Pellets
Dolime flux additive pellets are pelletized dolime used for electric furnace slag conditioning and phosphorus removal. They contain dolomite in the form of dolime and are fabricated articles for metallurgical use. They are not excluded by Chapter 68 notes.
Dolomite Ramming Mass for Induction Furnaces
Dolomite ramming mass for induction furnaces is dead-burned dolomite powder mixed for ramming into furnace linings. It contains dolomite in dolime form and is used for high-heat applications in steel foundries. It is an article of mineral substances, not excluded by Chapter 68 notes.
Dolomite Stopper Rods for Steel Teeming
Dolomite stopper rods for steel teeming are refractory stopper rods with dolime heads for controlling ladle steel flow. They contain dolomite and are refractory articles for metallurgical use. They are not excluded by Chapter 68 notes, as they are not tools of Chapter 82.