Blast Furnace Slag Aggregate from Mexico
Crushed blast furnace slag macadam for concrete sub-base and drainage layers in road projects. Specifically classified in 2517.20.00.00 as slag-based macadam incorporating industrial waste materials.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Certify slag is air-cooled (not ground) to avoid classification as hydraulic cement in 2523
• Screen size analysis certificates prevent disputes over granule vs powder classification
• Avoid oil contamination during shipping; document clean storage conditions