Quartz Ingot for Photomask Substrates
A synthetic quartz crystal ingot (fused silica) grown hydrothermally, exceeding 2.5 grams, for EUV photomask blanks in chip fabrication. As a cultured crystal that is not an optical element, it falls under this tariff item.
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 processed into an optical element
Optical elements are excluded from Chapter 38.
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 ingot is not yet a photomask blank (which would be Chapter 90)
• Keep records of the hydrothermal growth process
• Check if the product requires a permit under Canada's Export and Import Permits Act
Related Products under Tariff item 3824.99.00
Calcium Fluoride Ingot for UV Laser Optics
A Czochralski-grown calcium fluoride (CaF2) single crystal ingot, weighing more than 2.5 grams, intended for use in excimer laser optical windows. It is a cultured crystal that is not yet an optical element, and is therefore classified under this tariff item as a chemical product.
Gallium Arsenide Ingot
An LEC-grown gallium arsenide single crystal ingot over 2.5 grams for LED and solar cell substrates. It is a cultured crystal preparation not elsewhere specified, classified under this tariff item.
Gallium Nitride Ingot for LED Substrate Manufacturing
A cultured gallium nitride (GaN) boule grown by hydride vapor phase epitaxy, weighing over 2.5 grams, in cylindrical ingot form for subsequent wafering. It is a non-optical cultured crystal, classified here as a chemical preparation.
Grown Diamond Substrate
A CVD-grown single-crystal diamond substrate weighing more than 2.5 grams, used in electronics heat sinks. It is a cultured crystal not elsewhere specified, classified under this item.
KY Crystal Ingot
A Potassium Titanyl Phosphate (KTP) single crystal ingot, flux method grown, over 2.5 grams for nonlinear optics. It is a cultured crystal not an optical element, classified under this tariff item.
Lithium Niobate Crystal
A monocrystalline lithium niobate boule, flux-grown, exceeding 2.5 grams, for electro-optic devices. It is a cultured crystal not an optical element, classified under this item.