Tungsten Silicophosphate Binder from Canada
Chemical binder combining tungsten phosphates with alkali silicates for precision investment casting molds. Offers superior green strength and thermal shock resistance. 3824.99.3500 for multi-inorganic tungsten preparations.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Test pH and silicate ratio to confirm inorganic nature vs. organic resins
• Shelf life typically 6-12 months; declare manufacture date on commercial invoice
• Avoid temperature extremes during shipping to prevent gelling