C51000 Phosphor Bronze Strip from Mexico
C51000 phosphor bronze strip (94.8% Cu, 5% Sn, 0.2% P), 0.4 mm x 200 mm, for bellows, diaphragms, and electrical contacts. 7409.90.90 as copper alloy strip <5 mm thick, <500 mm wide; tin <3% but bronze characteristics.
Duty Rate — Mexico → United States
53%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Phosphorus content declaration mandatory; P>0.5% may trigger special processing review
• Spring temper strips risk 7415.33 classification if pre-formed
• Coil inner diameter specs prevent 'wire' misclassification