Curium-244 Isotope Alloy
Curium-244 isotope alloys, where curium is alloyed with carrier metals for research reactor targets, are classified under 2844.43.00. Chapter Note 4(d) confirms that alloys containing radioactive isotopes with specific radioactivity exceeding 74 Bq/g fall within heading 28.44.
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 alloy is a dispersion or cermet rather than a solid alloy
Subheading 2844.30 specifically covers dispersions and cermets containing radioactive elements, which may be more precise than 2844.43.00.
If the curium-244 is in pure isotopic form without alloying
Pure radioactive isotopes are classified under 2844.10, which takes precedence over compound or alloy headings per Section Note 1(A).
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
• Secure a CNSC import permit, as curium-244 is a transuranic element subject to strict controls
• Document the specific radioactivity (Bq/g) of the alloy to demonstrate it exceeds the 74 Bq/g threshold for heading 28.44
• Ensure the alloy composition is clearly stated on the commercial invoice to avoid misclassification
Related Products under Tariff item 2844.43.00
Actinium-225 Generator System
An Actinium-225/Bismuth-213 generator system for targeted alpha therapy, containing the radioactive decay chain of actinium (atomic number 89) in a resin column format. This falls under tariff item 2844.43.00 as a mixture containing radioactive elements and isotopes other than those of subheadings 2844.10, 2844.20, or 2844.30.
Americium-241 Oxide
Americium-241 oxide, a radioactive compound used in smoke detectors and as a calibration source for gamma spectroscopy. It is a chemically defined compound of the radioactive isotope americium-241, classified under this tariff item.
Americium-241 Oxide Source Material
Americium-241 oxide (Am-241 O2) is a chemically defined compound of the transuranic element americium (atomic number 95), used in neutron sources, smoke detectors, and industrial gauges. It is classified under tariff item 2844.43.00 as a radioactive element compound other than those of subheadings 2844.10, 2844.20, or 2844.30.
Berkelium-249 Metal Target
Berkelium-249 metal targets are pure isotope forms of element 97, used for synthesizing superheavy elements in research. They are classified under 2844.43.00 as other radioactive elements and isotopes, as berkelium is not covered by the specific subheadings 2844.10, 2844.20, or 2844.30.
Californium-252 Neutron Source
Californium-252 metal sources encapsulated for neutron radiography, well logging, and PGNAA analysis, featuring high neutron emission from spontaneous fission. This transplutonium element (atomic number 98) is classified under tariff item 2844.43.00 as a radioactive element other than those of subheadings 2844.10, 2844.20, or 2844.30.
Cesium-137 Chloride Sealed Sources
Cesium-137 chloride (CsCl) sealed sources are used in brachytherapy and calibration standards, as compounds of the fission product Cs-137 (half-life 30 years). These chemically defined radioactive compounds are classified under tariff item 2844.43.00 as other radioactive compounds.