Premium Grade Precision Cast and Extruded Copper Solutions for Electrical, Aerospace, and High-Performance Engineering Projects.
Established in 2017, Sichuan Kepai New Materials Co., Ltd. is a premier manufacturing pioneer integrated with rigorous research and development, cutting-edge production lines, and high-efficiency global distribution networks. Operating inside a state-of-the-art 9,000 square meter factory along with a modern 1,000 square meter administrative hub, we are positioned within the western area of the Sichuan Guanghan Industrial Development Zone.
Our facility sits strategically adjacent to National Highway 108, granting us premium transportation connectivity for rapid bulk raw material procurement and immediate shipping. We specialize in producing national 13th Five-Year Plan strategic emerging new materials. Specifically, our focus lies in high-conductivity, easy-to-machine, and high-strength custom copper alloys (such as tellurium copper, high-conductivity oxygen-free copper, silver copper, and dispersion copper).
In the contemporary landscape of global manufacturing, high-quality pure copper (specifically Class-A cathode copper and high-purity electrical grades exceeding 99.9% purity) represents the fundamental infrastructure of the green transition. Often designated as the "metal of electrification," pure copper is critical for modern power generation, smart grids, and electric drivetrain topologies. Because of copper's superior electrical conductivity—only surpassed by silver—it serves as the baseline measurement of the International Annealed Copper Standard (IACS).
As governments worldwide accelerate their decarbonization initiatives, pure copper's market volume has experienced unprecedented expansion. The structural demand is shifting from traditional civil construction projects toward complex clean energy architectures, high-voltage substations, and automotive electrification. Advanced smelting and refining factories face the technical challenge of extracting high purity while minimizing the traces of oxygen, hydrogen, and iron—impurities that can degrade conductivity and compromise structural integrity at scale.
Industrial demand has catalyzed the development of premium pure grades such as oxygen-free high-conductivity (OFHC) copper, which restricts oxygen levels to less than 10 ppm (parts per million). Oxygen-free copper avoids hydrogen embrittlement during high-temperature manufacturing, making it irreplaceable in vacuum electronics, high-vacuum seals, and superconducting semiconductor magnets. Factories capable of maintaining these specialized micro-alloys represent the vanguard of global manufacturing.
How Sichuan Kepai Integrates Proprietary R&D With High-Volume Industrial Capability
Technological innovation represents the core competitiveness of Sichuan Kepai New Materials. We have formed a high-level development panel consisting of senior metallurgical scientists and production experts. Through a system of joint industry-university-research collaborations, Kepai has achieved key breakthrough advancements in premium grades including high-performance tellurium copper material, lead copper, and free-machining sulfur copper. Our proprietary melting configurations ensure that impurities are minimized without sacrificing mechanical durability.
Our comprehensive copper alloy catalog is engineered to reduce production overheads and secure high electrical and thermal performance. We deliver pure copper, oxygen-free copper, oxygen-free high-conductivity tellurium copper, nickel tellurium copper, tin bronze, beryllium copper, lead bronze, sulfur copper, and chromium zirconium copper. All alloys are produced to reach the international standards required in advanced precision parts production and high-power applications.
Kepai operates on a strategic development framework: "Rooted in Sichuan, radiating nationwide, and moving towards the world." Our global footprint spans Europe, the Americas, and Southeast Asia. We supply international enterprises with reliable, consistent metal profiles. By complying strictly with global standardization schemas (such as RoHS and REACH regulations), we ensure our raw copper meets cross-border customs requirements.
We advocate the corporate spirit of "integrity, innovation, collaboration, and win-win." This value system encourages our technicians to constantly push the limits of material science. Every batch of copper is manufactured to match the precise expectations of our partners, securing high-performance engineering yields and trust in the industrial manufacturing sector.
The development roadmap of specialized copper metallurgy is shaped by two conflicting engineering challenges: improving mechanical tensile strength while maintaining maximum electrical conductivity. In traditional metallurgy, adding alloying elements to increase hardness significantly reduces electrical performance. However, modern industrial solutions demand alloys that excel in both areas.
In high-speed CNC machining hubs, production throughput depends on the machinability index of raw materials. Pure copper is naturally soft and sticky, which leads to high tool wear and heat accumulation. By introducing 0.4% to 0.7% tellurium, factories create C14500 tellurium copper. This alloy achieves a machinability rating of 85% (compared to free-cutting brass at 100%), while maintaining an electrical conductivity rating of over 93% IACS. This makes it perfect for plasma cutting nozzles, electrical contacts, and electric vehicle charging connectors.
For high-stress industrial applications, precipitation-hardened alloys are required:
Global environmental regulations, including RoHS and REACH, have pushed the industry away from traditional leaded alloys. Historically, lead was added to improve machinability in alloys like C36000. Today, forward-looking manufacturers use sulfur, tellurium, or bismuth as eco-friendly alternatives. These modern formulations provide the necessary machinability without environmental contamination risk.
Our adherence to ISO and global metal specifications ensures reliable product performance
From vacuum smelting to electromagnetic testing, we control quality at every stage of the process.
In modern industrial applications, copper alloys serve as specialized engineering solutions rather than raw metals. Depending on the electrical and mechanical stresses of the project, we formulate specific alloys to meet performance demands.
The high current densities in EV battery packs and high-power charging networks generate significant heat. Standard copper alloys risk thermal softening under these conditions. We provide high-conductivity oxygen-free copper and tellurium copper for:
The high-frequency signals of 5G antennas require clean contact paths to prevent signal degradation. Our high-purity copper and lead-free alloys are used in coaxial connectors, micro-switches, and waveguide components. This helps maintain stable data transmission in harsh outdoor environments.
Industrial laser cutting nozzles must withstand backsplatter from molten steel while maintaining gas flow geometry. The thermal conductivities of tellurium copper prevent slag adhesion, keeping cutting paths clean and extending nozzle service life. This minimizes maintenance downtime for heavy-scale manufacturers.
Expert Answers Concerning Copper Metallurgy, Alloy Selection, and Quality Parameters
Need assistance selecting the right alloy grade for your application? Contact our metallurgy engineering team to request a quote and technical review.
Premium Grade Precision Cast and Extruded Copper Solutions for Electrical, Aerospace, and High-Performance Engineering Projects.
Kepai