High Purity Copper Core

Updated: 2026-09-19

Overview

High Purity Copper Core is a premium-grade copper material with purity levels typically exceeding 99.9%, ensuring minimal impurities like oxygen or sulfur. It is widely used in industries requiring exceptional electrical conductivity and thermal performance, such as electronics, telecommunications, and energy transmission. Produced via advanced refining processes like electrolysis or zone refining, this material meets stringent standards for applications where even trace impurities could degrade performance. Its versatility extends to specialized forms like oxygen-free copper (OFHC) for vacuum environments.

Physical and Chemical Properties

High Purity Copper Core exhibits outstanding electrical conductivity (≥101% IACS) and thermal conductivity (385 W/m·K), outperforming most industrial metals. Its ductility allows for easy drawing into fine wires or rolling into thin sheets without cracking. Chemically, it resists corrosion in non-oxidizing environments but may tarnish in humid or sulfur-rich conditions. The absence of oxygen (in OFHC variants) prevents hydrogen embrittlement, making it ideal for high-temperature applications.

Main Applications

The primary use of High Purity Copper Core is in electrical wiring and cabling for power transmission, where low resistance minimizes energy loss. It is also critical for printed circuit boards (PCBs), semiconductor interconnects, and superconducting magnets. Other applications include RF shielding in aerospace, heat exchangers in cooling systems, and precision components in medical imaging devices. Its anti-microbial properties further enable use in healthcare surfaces.

Safety and Storage

While solid copper is generally safe, dust or fumes from machining require proper ventilation to prevent respiratory irritation. Storage should prioritize dryness to avoid surface oxidation, often using desiccants or nitrogen-sealed containers. Recyclability is a key advantage, with copper retaining its properties indefinitely. B2B buyers should ensure compliance with RoHS and REACH regulations for hazardous substance restrictions.

B2B Procurement Guide

When sourcing High Purity Copper Core, verify third-party certifications (e.g., ASTM B170 for OFHC) and mill test reports. Purity levels (99.95%-99.99%) should match application requirements to avoid over-specification costs. Suppliers may offer forms like rods, wires, or foils—select based on downstream processing needs. For bulk orders, negotiate contracts with price-adjustment clauses linked to LME copper futures.