7505.22.50.00/Constantan Nickel-Copper Wire/Japan

Constantan Nickel-Copper Wire from Japan

Constantan (55% copper, 45% nickel) wire provides stable electrical resistance for precision thermocouples and strain gauges. Though copper-rich, nickel alloy status and non-cold-formed processing classify it under HTS 7505.22.50.00.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Thermocouple type (Type J, T) designation helps verify alloy composition

• Provide resistivity curves confirming constantan properties vs generic alloys

• Copper content can trigger secondary review for Chapter 74 classification