Alumina Silicate and Borax Flux Mixture from Germany
Fused mixture of alumina silicate and borax (sodium tetraborate) used as a binder flux in ceramic shell foundry cores. HTS 3824.99.39 covers this inorganic compound blend specifically prepared for high-temperature foundry bonding applications. Enhances thermal shock resistance.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Specify fusion temperature and borax/silicate ratio in technical specs; test boron content for REACH compliance if transshipping through EU; label as 'not for food contact.'