Oxygen-Free High Conductivity Copper Billets
Oxygen-free high conductivity (OFHC) copper billets feature ultra-low oxygen content (<10 ppm) for superior electrical performance in billets used for magnet wire. They qualify under HTS 7403.13.00.00 as unwrought refined copper billets. Ideal for semiconductors and RF applications due to high purity.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If copper-nickel-zinc alloy (nickel silver)
Nickel ≥5% shifts classification to 7403.23 per subheading note (c).
If actually aluminum mistaken for copper
Aluminum wire bars/billets fall under Chapter 76; material composition determines chapter.
If unrefined copper content >1% impurities
Unrefined copper and anodes for electrolysis are under 7402, not refined billets.
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Import Tips & Compliance
• Submit oxygen content analysis certificates; levels above 50 ppm may reclassify as ETP rather than OFHC
• Use ISRI scrap specifications if importing recycled content billets to qualify for lower duties
• Label as 'not for remelting into alloys' to prevent heading 7405 master alloy classification
Related Products under HTS 7403.13.00.00
High Purity Refined Copper Billets
High purity refined copper billets (99.99% Cu) are cylindrical semi-finished products used primarily for extrusion into rods and wires. They fall under HTS 7403.13.00.00 as unwrought refined copper in billet form, distinct from castings or other shapes. These billets are produced by continuous casting and are essential for electrical wiring and conductors.
Electrolytic Tough Pitch Copper Billets
Electrolytic tough pitch (ETP) copper billets are refined copper (99.9% Cu with controlled oxygen) cast into billet form for wire rod production. Classified under HTS 7403.13.00.00 as unwrought refined copper billets, they are key for high-conductivity applications like power cables. Produced via electrolytic refining for optimal electrical properties.
Continuous Cast Copper Billets for Rod Extrusion
Continuous cast refined copper billets, typically 200-300mm diameter, are designed for hot extrusion into copper rods for subsequent drawing into wire. HTS 7403.13.00.00 covers these unwrought refined copper billets. Produced via horizontal continuous casting for uniform microstructure.
Premium Refined Copper Billets 8-Inch Diameter
8-inch (200mm) diameter premium refined copper billets with surface free of cracks, used for high-quality rod production in automotive wiring harnesses. Classified as HTS 7403.13.00.00 unwrought refined copper billets. Meet stringent ASTM B170 specifications for billet quality.