Industrial Grade Split Block Mica

Industrial split block mica is crude mica split into precise thin laminae under 0.508 mm, toleranced to 0.203 mm, ready for manufacturing into components. Commonly sourced from India or Madagascar, it's essential for capacitors and peizo devices. HTS 2525.10.0010 covers this unprocessed form explicitly excluding cut or stamped products.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+35.0%35%
🇲🇽MexicoFree+10.0%10%
🇨🇦CanadaFree+10.0%10%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+10.0%10%

Alternative Classifications

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

2525.30.00.00Same rate: 35%

If defective or scrap from splitting process

Mica waste from processing, including broken split blocks, is separately classified.

9001.90.40.00Same rate: 35%

If further processed into optical elements

Mica made into lenses or prisms for optical use falls under Chapter 90.

8547.90.00Higher: 39.6% vs 35%

If sold as part of electrical insulator assembly

If imported as components of finished insulators rather than raw material, classification shifts.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Obtain supplier affidavits confirming no cutting/stamping to defend against CBP challenges to split block status

Comply with Lacey Act declarations for plant-like minerals if sourced from protected areas

Batch-test for iron impurities, as high metal content may redirect to micaceous iron oxides in 2530.90

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