CW118C Tellurium Copper (equivalent to C14500) represents a pinnacle of material science, specifically engineered to bridge the gap between high-purity copper and high-speed machinability. In the current global industrial landscape, the shift toward Industry 4.0 and Green Energy has catalyzed an unprecedented demand for materials that offer both electrical efficiency and production scalability.
As a leading CW118C wholesale supplier, Sichuan Kepai New Material Co., Ltd. addresses the "machinability bottleneck." Pure copper, while conductive, is notoriously difficult to CNC machine due to its ductility. CW118C introduces trace amounts of Tellurium, which acts as a chip-breaker, increasing the machinability rating to 85% compared to pure copper’s 20%. This optimization reduces tool wear, slashes production time, and ensures that the final components—whether for EV charging stations or aerospace connectors—maintain superior thermal and electrical conductivity.
Electrical Conductivity
Machinability Rating
Global Patents
Certified Standards
Established in May 2017, Sichuan Kepai New Materials Co., Ltd. is a high-tech private company specializing in R&D, production, and sales of high conductivity and high strength free-cutting tellurium copper and other special copper alloys. Our mission is to provide the "King of Copper" materials to the global market, ensuring that high-end manufacturing needs are met with precision and reliability.
Refining the grain structure of CW118C to enhance fatigue resistance in vibrating environments, such as aeronautics and heavy-duty robotics.
Utilizing vacuum melting technology to produce "Oxygen-Free Tellurium Copper" (OFT), eliminating hydrogen embrittlement risks in high-temperature applications.
Developing 100% recyclable copper alloy chains that meet the strictest EU Environmental Regulations and RoHS standards for a circular economy.
CW118C is the preferred material for high-voltage connectors and charging gun pins. Its low contact resistance prevents overheating during fast-charging cycles.
Generator parts and data transmission components utilize Tellurium Copper for its stability across extreme temperature gradients.
Used in high-frequency surgical tools and MRI components where electrical precision and anti-microbial properties are paramount.
Superior thermal conductivity makes CW118C the standard for plasma cutting electrodes and holder tips, significantly extending consumable life.
| Standard | Status |
|---|---|
| ISO 9001:2015 | Verified Quality System |
| IATF 16949 | Automotive Grade Compliance |
| RoHS / REACH | Environmentally Safe |
| OHSAS 45001 | Occupational Health & Safety |
With an established export network spanning Europe, North America, and Southeast Asia, Kepai provides:
Nickel-silicon precipitation strengthened alloy with outstanding softening resistance for high-load terminals.
The perfect balance of cold forming and mechanical strength. Ideal for deep drawing and stamping.
The highest strength copper alloy (up to 1380 MPa). Essential for precision springs and aerospace bushings.
Optimized for high-volume automatic screw machine operations where conductivity is secondary to speed.
CW118C (Tellurium Copper) offers a machinability rating of 85%, whereas C11000 is only 20%. This allows for faster production of complex parts while maintaining 90-98% of the electrical conductivity. It is also resistant to hydrogen embrittlement.
Yes. We provide various forms including rods, bars, plates, and customized profiles. Our independent R&D and production system allow for bespoke alloy compositions based on specific conductivity or hardness requirements.
It is excellent. The material’s ability to resist "arc-welding" (contact sticking) and its low electrical resistance make it the industry standard for high-current connectors in Tesla-style or CCS charging systems.
Absolutely. All our materials are tested for hazardous substances and comply with European RoHS and REACH regulations, ensuring they are safe for use in consumer electronics and global exports.
Partner with Sichuan Kepai New Material for industry-leading CW118C Tellurium Copper solutions.
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