Constantan Nickel-Copper Wire from Germany
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 — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
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