Constantan Bare Wire for Strain Gauges from Canada
High-precision bare constantan (cupro-nickel alloy) wire for strain gauge sensors in engineering applications. HTS 7408.22.50.00 due to copper-nickel base composition, uncoated.
Duty Rate — Canada → 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
• Provide resistivity (typically 48-50 μΩ·cm) and elongation data to confirm strain gauge grade
• Ultra-fine diameters (<0.1mm) require special handling declarations
• Distinguish from foil forms—wire only under 7408