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In the highly demanding realm of industrial hardware manufacturing, the selection of raw materials dictates not only the performance of the final product but also the efficiency of the entire production line. C18700 Leaded Copper stands out as a premier material choice, engineered specifically to bridge the gap between exceptional electrical conductivity and superior machinability. Comprising approximately 99% pure copper alloyed with roughly 1% lead, this unique metallurgical composition creates a material that is highly sought after in precision engineering.
The magic of C18700 lies in the physical behavior of lead within the copper matrix. Unlike other alloying elements that dissolve into the copper, lead remains insoluble, forming microscopic, finely dispersed particles throughout the microstructure of the metal. During CNC machining, turning, or milling, these lead particles act as an internal, natural lubricant. They cause the metal chips to break off cleanly and rapidly, preventing the long, stringy chips that typically plague the machining of pure copper. This characteristic grants C18700 an impressive machinability rating of 85 (compared to free-cutting brass at 100), making it the ultimate choice for high-speed automatic screw machines and complex hardware fabrication.
Furthermore, despite the addition of lead, C18700 retains an extraordinary electrical conductivity rating of approximately 96% IACS (International Annealed Copper Standard). This ensures that industrial hardware components manufactured from this alloy can handle high electrical loads with minimal resistance and heat generation, a critical factor for modern electromechanical systems.
Established in 2017, Sichuan Kepai New Materials Co., Ltd. is a high-tech enterprise integrating research and development, production, and sales. Currently, the factory covers an area of approximately 9,000 square meters, with an office space of about 1,000 square meters. The company primarily engages in the production of strategic emerging new materials for the national 13th Five-Year Plan, including special copper alloys such as tellurium copper, high-conductivity oxygen-free copper, silver copper, and dispersion copper, while also focusing on the research and development of high-conductivity, easy-to-machine, high-strength copper alloys like C18700. The products are mainly applied in high-tech fields such as new energy vehicles, 5G technology, laser cutting, and lithium battery relays.
Located in the western area of the Sichuan Guanghan Industrial Development Zone, adjacent to National Highway 108, we boast a superior geographical location and convenient transportation. Since our establishment, Kepai has adhered to the business philosophy of "innovation-driven development, quality wins the market," committed to providing customers with the highest quality high-end copper alloy materials, and promoting industrial upgrading and sustainable development.
The global industrial hardware market is experiencing a paradigm shift. With the rapid expansion of automation, robotics, and the Internet of Things (IoT), the demand for highly reliable, precision-engineered hardware components has skyrocketed. In this landscape, C18700 Leaded Copper has transitioned from a niche specialty metal to a mainstream industrial staple. Its commercial viability is driven by a simple yet powerful economic equation: the slight premium in raw material cost is exponentially offset by drastic reductions in machining time, tool wear, and part rejection rates.
From a supply chain perspective, manufacturers of industrial fasteners, fluid control valves, and electrical switchgear are increasingly standardizing their specifications around C18700. Tooling costs are a significant overhead in hardware manufacturing. Because the lead in C18700 significantly reduces friction at the cutting edge, the lifespan of expensive carbide and diamond-tipped cutting tools is extended by up to 300% compared to machining pure C11000 copper. This translates to fewer machine stoppages for tool changes, maximizing throughput and lowering the total cost of ownership (TCO) for production facilities.
Looking at development trends, the miniaturization of industrial hardware is pushing the limits of material science. As components become smaller, the tolerances become tighter. C18700 allows for micro-machining with exceptional dimensional stability. Furthermore, as the world pivots towards green energy, the infrastructure required—such as EV charging stations, solar inverters, and wind turbine slip rings—demands hardware that won't degrade under heavy electrical loads or harsh environmental conditions. C18700 fits this matrix perfectly, offering the necessary corrosion resistance, thermal conductivity, and mechanical strength to support the next generation of industrial infrastructure.
Technological innovation is the core competitiveness of Sichuan Kepai New Materials Co., Ltd. We possess a research and development and production team composed of senior industry experts who keep pace with international cutting-edge technology trends. Through independent R&D and industry-university-research collaboration, Kepai has made breakthrough progress in high-performance tellurium copper, lead copper (C18700), and sulfur copper. Our technological achievements have reached international advanced levels, applied successfully in EV, precision machining, and energy storage.
Kepai's product line is rich and diverse, covering solutions from basic materials to high-end customization. We provide high-performance copper alloy products, including pure copper, oxygen-free copper, tellurium copper, tin bronze, beryllium copper, lead bronze, and chromium zirconium copper. These products play an important role in reducing production costs and enhancing product performance due to their excellent physical and chemical properties and environmental friendliness.
Facing global market competition, Sichuan Kepai adheres to "rooted in Sichuan, radiating nationwide, and moving towards the world." By optimizing our market layout and sales network, we have established stable customer bases across the country and formed long-term cooperative relationships with internationally renowned enterprises. We actively expand into overseas markets, participating in international competition to promote Kepai's global brand influence.
We understand that long-term development is inseparable from an excellent corporate culture. We advocate "integrity, innovation, collaboration, and win-win," encouraging employees to explore boldly while emphasizing teamwork and talent cultivation. We strive to create a harmonious, open, and inclusive work atmosphere, believing that continuously pursuing excellence creates value and wins the trust of customers and society.
The versatility of C18700 Leaded Copper allows it to dominate a multitude of specific industrial hardware applications. One of the most prominent uses is in the manufacturing of Electrical Connectors and Terminals. In high-voltage industrial environments, connectors must endure frequent mating cycles without galling, while maintaining absolute electrical integrity. The self-lubricating nature of the lead content in C18700 prevents contact wear, while the 99% copper base ensures minimal power loss. Similarly, in Fluid Control Hardware (such as specialized valves, fittings, and manifolds for non-potable industrial fluids), C18700 provides excellent thread strength and pressure tightness, ensuring leak-proof performance under high-stress conditions.
Another critical application is in Heavy Machinery Bushings and Bearings. Industrial hardware isn't just static; it involves moving parts subjected to high friction. C18700 hardware components exhibit remarkable anti-friction properties, operating smoothly even in environments where external lubrication might fail or be difficult to apply. Additionally, precision Fasteners, Screws, and Rivets made from this alloy are highly valued in the aerospace and telecommunications sectors, where the balance of torque resistance and conductivity is non-negotiable.
The Role of AI and Smart Manufacturing: The production and processing of C18700 are currently undergoing an AI-driven revolution. Modern metallurgical plants are utilizing Artificial Intelligence to monitor the smelting and extrusion processes in real-time. By analyzing thousands of data points—from furnace temperature gradients to cooling rates—AI algorithms can precisely control the dispersion of lead particles within the copper matrix, ensuring absolute uniformity across every batch. Furthermore, in the CNC machining of C18700 hardware, AI-powered predictive maintenance tools analyze acoustic emissions and vibration data to optimize feed rates and predict tool wear before it impacts the dimensional accuracy of the hardware. This integration of AI technology guarantees that every piece of C18700 industrial hardware meets the exact specifications required by next-generation engineering projects.
Smelting
Laying-off
Extrusion
Drawing
Straightening
Package
Eddy Current Conductance Instrument
Chemical Composition Test Room
Metallographic Sample Polishing Machine
Electro-Hydraulic Servo Testing Machine
Electronic Universal Testing Machine
Hardness Tester
Looking ahead, Sichuan Kepai New Materials Co., Ltd. will continue to uphold its original intention, with even greater enthusiasm and determination, to engage in research and application in the field of new materials, contributing to the development of the new copper alloy materials industry in China and globally. We look forward to working hand in hand with friends from all walks of life to create a brilliant future together!
