Silicon Nitride Rod

Dense silicon nitride ceramic rod for thermocouple supports in molten aluminum holding furnaces. Refractory good under HTS 6903.90.00.50, fired nitride material excluding electrical uses.

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.

6903.20.00Same rate: 35%

If with siliceous earth additives

Any siliceous fossil content requires specific 6903.20

8483.90Lower: 12.8% vs 35%

If precision-machined pump shaft

Finished ceramic transmission parts go to Chapter 84/85

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

Prove nitride bonding via XRD analysis; end-use statements for metal industry; avoid Chapter 85 insulator exclusion

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