Foamed Slag Aggregate from Japan
Foamed slag is produced by expanding blast furnace slag with air or steam for use as lightweight concrete aggregate. It matches HTS 6806.20.00.00 as a similar expanded mineral material for construction insulation and sound absorption. Provides thermal properties in building fills.
Duty Rate — Japan → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Submit industrial process documentation showing slag foaming method to validate HTS classification
• Ensure no metallic content exceeds trace levels to avoid Chapter 72 steel product reclassification
• Declare particle size distribution for verifying use as expanded aggregate