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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing zinc as primary alloying element under 3% tin
Copper-zinc base alloys (brasses) are classified under 7403.21 as distinct from pure refined copper.
If master alloys for remelting
Master alloys of copper with specific compositions for alloy production fall under heading 7405, not refined copper.
If further processed into bars or rods
Once extruded or rolled into rectangular cross-section bars/rods, they become wrought products under Chapter 74 heading 7407.
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Import Tips & Compliance
• Provide mill test certificates verifying 99.99% copper purity to confirm refined status and avoid reclassification as alloy
• Ensure billets meet ASTM B49 standards for refined copper; improper documentation can lead to higher duties under alloy headings
• Declare exact dimensions and weight accurately, as billets over certain sizes may trigger anti-dumping scrutiny
Related Products under HTS 7403.13.00.00
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.
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.
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.