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2508.60.00.00/High Purity Mullite for Investment Casting/Mexico

High Purity Mullite for Investment Casting from Mexico

High purity mullite specifically graded for investment casting shells provides thermal stability and low thermal expansion. Falls under HTS 2508.60.00.00 as specialized mullite earth for industrial refractory use.

Duty Rate — Mexico → United States

10%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Certify mullite phase purity (>98%) via X-ray diffraction reports for customs scrutiny

• Specify end-use as casting shell stucco to avoid precious metal melting crucible misclassification

High Purity Mullite for Investment Casting from Mexico — Import Duty Rate | HTS 2508.60.00.00