Industrial Copper Materials for Precision Applications

Both are high-purity copper grades with excellent electrical conductivity, but they differ in oxygen content and manufacturing process:

• C11000 (ETP Copper): Electrolytic tough pitch copper with 0.02-0.04% oxygen. Standard for electrical applications with 101% IACS conductivity minimum.
• C10100 (OFE Copper): Oxygen-free electronic copper with <0.001% oxygen. Premium grade for high-frequency applications and vacuum brazing.

For most electrical conductors and busbars, C11000 provides excellent performance at lower cost. C10100 is preferred for specialized electronics and aerospace applications.

Copper oxidation forms a surface layer that significantly reduces electrical conductivity. Our anti-oxidation packaging system includes:

• Vacuum sealing: Removes oxygen to prevent oxidation during storage and transport
• Corrosion inhibitors: VCI (Volatile Corrosion Inhibitor) films create a protective molecular layer
• Moisture barriers: Multi-layer films prevent humidity ingress
• Inert atmosphere: Nitrogen or argon gas flushing for critical applications

This packaging maintains the original surface conductivity for up to 24 months, ensuring your copper materials perform as specified when installed.

C36000 Free-Cutting Brass is the gold standard for CNC machining with 100% machinability rating. Here's why:

• Lead content (2-3%): Acts as a chip breaker, producing short chips that don't wrap around tools
• Excellent surface finish: Machines to mirror-like finish with minimal post-processing
• High cutting speeds: Allows faster production cycles and longer tool life
• Dimensional stability: Low internal stress prevents distortion during machining

For lead-free requirements, consider C26000 (cartridge brass) with 80% machinability, or phosphor bronze C51000 for applications requiring spring properties.

Every YCS copper shipment includes comprehensive documentation:

• Material Test Certificates (MTC): Chemical composition per ASTM B152/B187 standards
• Conductivity Reports: IACS % conductivity testing per ASTM B193 method
• Mechanical Properties: Tensile strength, yield strength, and elongation data
• Dimensional Inspection: CMM reports for critical dimensions and tolerances
• RoHS Compliance: Lead content verification for electronics applications
• Traceability: Heat numbers linking to raw material sources

Digital certificates are available via QR code on packaging, with hard copies included in shipments. All testing performed by certified third-party laboratories.

Yes, our integrated manufacturing facility produces custom copper profiles with in-house extrusion capabilities:

• Complex profiles: Heat sinks, electrical bus bars, architectural shapes
• Precision tolerances: ±0.1mm on critical dimensions
• Length capabilities: Up to 12 meters continuous extrusion
• Secondary operations: CNC machining, drilling, surface treatments
• Prototype to production: 50kg minimum order for custom tooling

Lead time is typically 3-4 weeks for new tooling, then 5-7 days for production runs. Send us your drawings for a detailed feasibility assessment and quote.

We support both small-scale prototyping and large production volumes:

• Stock materials: No minimum order - single pieces available from inventory
• Cut-to-length service: 1kg minimum for precision cutting and surface finishing
• Custom machining: 10kg minimum for CNC operations
• Custom extrusions: 50kg minimum for new profile tooling
• Surface treatments: Batch minimums vary by process (anodizing, plating, etc.)

Sample quantities (under 1kg) available for material evaluation at standard pricing. Volume discounts apply for orders over 100kg.