Brazing Stop-Off Paint from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, 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