Indium Foil for Thermal Interface

Thin indium foil sheets applied between heat-generating components and heatsinks in electronics for superior thermal conductivity. Classified as an article of indium under HTS 8112.99.9100.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China4%+25.0%29%
🇲🇽Mexico4%—4%
🇨🇦Canada4%—4%
🇩🇪Germany4%—4%
🇯🇵Japan4%—4%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

7419Lower: 10% vs 29%

If alloyed primarily with copper

Copper-indium alloys (>50% copper) fall under Chapter 74 copper articles.

8473.30.51.00Higher: 50% vs 29%

If pre-applied to computer parts

Assembled into machinery parts, moves to Chapter 84/85 as computer components.

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Import Tips & Compliance

• Specify thickness and purity on invoice to classify as foil article, not unwrought

• Avoid generic 'metal foil' description to prevent misclassification

• Declare RoHS compliance if for consumer electronics assembly