Brazing Stop-Off Paint from Canada
Refractory paint applied to mask areas during vacuum brazing of turbine blades. HTS 3810.90.5000 as auxiliary brazing preparation, withstands 2000°F without metal contamination. Removed by water blasting post-cycle.
Duty Rate — Canada → United States
15%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Thermal decomposition curve validates brazing auxiliary function
• Refractory oxide content analysis prevents paint classification
• Surface tension specs for thin film uniformity