Constantan Bare Wire for Strain Gauges from Mexico
High-precision bare constantan (cupro-nickel alloy) wire for strain gauge sensors in engineering applications. It falls under tariff item 7408.22.00 as uncoated wire of copper-nickel base alloys, meeting the definition of copper-nickel base alloys with nickel content at least 5% and zinc not exceeding 1%.
Duty Rate — Mexico → Canada
0%
Import Tips
• Ensure the constantan alloy composition meets the copper-nickel base alloy definition (nickel ≥5%, zinc ≤1%)
• Provide a certificate of analysis to confirm the alloy composition for CBSA
• Declare the wire's diameter and coil form, as these are relevant to the wire definition