Wafer Crystal Grinder Turbine Assembly from Canada
High-precision turbine assembly powers diamond grinders that shape silicon boules to exact wafer diameters and grind orientation flats indicating resistivity. Falls under HTS 8411.99.90 as gas turbine parts for semiconductor wafer preparation equipment. Provides sub-micron precision grinding essential before wafer slicing.
Duty Rate — Canada → United States
12.4%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Include metrology certificates proving grinder achieves <1μm flatness tolerances required for semiconductor wafers
• Document turbine RPM range (10,000-50,000) and diamond wheel specifications in entry paperwork
• Avoid misclassification by specifying semiconductor boule application vs general metal grinding