Constantan Bare Wire for Strain Gauges from United States
This is a high-precision bare constantan (cupro-nickel alloy) wire used for strain gauge sensors in engineering applications. It is classified under tariff item 7408.22.00 as wire of copper-nickel base alloy, and being uncoated does not change its classification.
Duty Rate — United States → Canada
0%
Import Tips
• Ensure the wire's alloy is a copper-nickel base alloy, with nickel predominating over other elements except copper, to meet the tariff item's definition
• Since the wire is bare, no coating declarations are needed, but alloy composition must be documented
• Keep supplier certificates to confirm the constantan composition for CBSA