HS Code 74.03 – Copper; refined and copper alloys, unwrought

HS code 7403 is a 4-digit heading in the Harmonized System that covers: Copper; refined and copper alloys, unwrought. HS Code 7403 covers "Refined copper and copper alloys, unwrought." This is a pivotal classification for the global copper industry, encompassing high-purity copper (typically 99.9% or more) and various copper alloys that have not yet been worked beyond their initial casting. 'Unwrought' refers to the forms in which these metals are typically traded as raw materials, such as cathodes, ingots, billets, wire-bars, and slabs. Key sub-categories include electrolytic tough pitch copper, oxygen-free copper, phosphorus deoxidized copper, and a vast array of copper alloys like brass (copper-zinc), bronze (copper-tin), cupro-nickel (copper-nickel), and nickel silver (copper-nickel-zinc), all in unwrought forms. This heading is the primary source of copper and copper alloy feedstock for subsequent manufacturing processes, from wire drawing to sheet rolling and casting of finished products. Accurate classification is paramount for determining customs duties, ensuring compliance with origin rules, and monitoring global metal trade flows. Historically, the trade of refined copper has been a bellwether for industrial activity worldwide. As part of Chapter 74 (Copper and articles thereof) and Section XV (Base Metals), it signifies copper in its most commercially usable raw metal form, ready for fabrication.

Copper cathodes, copper wire bars, refined copper ingots, refined copper billets, refined copper slabs, phosphorus deoxidized copper, oxygen-free copper, electrolytic tough pitch copper (ETP), brass ingots, bronze ingots, cupro-nickel ingots, nickel silver ingots, copper-zinc alloy billets, copper-tin alloy ingots, copper-aluminum alloy bars, copper-beryllium alloy ingots, refined copper cakes, copper-silicon alloy unwrought, copper-manganese alloy unwrought, copper-chromium alloy unwrought, tellurium copper ingots, cadmium copper ingots, arsenical copper ingots, high-conductivity copper ingots.

Misclassification often occurs between 7403 and 7402 (Unrefined copper) or 7405 (Master alloys). The critical distinction from 7402 is the purity level: 7403 specifies 'refined' copper (typically 99.9% or higher), whereas 7402 is 'unrefined.' Confusion with 7405 arises because master alloys are also copper alloys, but their purpose is specifically to introduce an alloying element into a melt, not for direct fabrication. Another common error is classifying semi-manufactured products (e.g., copper bars, rods, profiles of 7407) as unwrought (7403) when they have undergone further processing beyond initial casting, leading to incorrect duties and potential penalties.

In 2025, the top exporters of HS code 7403 in UN Comtrade data were the DR Congo (about $23.8B, 22% of world exports), Chile ($17.5B) and China ($8.0B). World exports came to about $107.7B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

In 2025, the top importers of HS code 7403 in UN Comtrade data were China ($40.5B, 37% of world imports), the United States ($16.9B) and Germany ($5.1B). World imports came to about $109.2B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

HS code 7403 is a 4-digit heading under Chapter 74 of the Harmonized System. The first 2 digits (74) identify the chapter, and digits 3-4 (03) specify the heading. This code contains multiple 6-digit subheadings for precise product classification.