Grahamite Asphaltite from Mexico
Grahamite is a hard, brittle natural asphaltite from vein deposits, classified in HTS 2714.90.00.00 as asphaltites. It is used in foundry cores and electrical insulation due to its fracture-resistant properties.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Brittleness tests distinguish from softer asphaltites; declare particle size if crushed
• Dust control in shipping; use ventilated containers