In the landscape of modern metallurgy, C18700 Leaded Copper stands as a pinnacle of engineering balance. Often referred to as "Free-Machining Copper," this alloy is uniquely designed to provide the highest possible electrical conductivity (min 96% IACS) while offering a machinability rating of 85-90% relative to free-cutting brass.
As leading C18700 copper manufacturers, we recognize that global enterprises require more than just raw materials; they need consistency, compliance, and technological depth. This whitepaper-grade analysis explores why C18700 is becoming the preferred choice for EV charging components, high-speed connectors, and precision medical devices.
Established in May 2017, Sichuan Kepai New Materials is a high-tech private company specializing in the R&D, production, and sales of high-conductivity and high-strength special copper alloys. Our facility spans 29,000 square meters, housing state-of-the-art oxygen-free melting and precision drawing equipment.
Established
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Our unique oxygen-free melting process ensures that C18700 and Tellurium Copper alloys achieve maximum purity, eliminating the risk of hydrogen embrittlement in high-temp applications.
Unlike standard leaded alloys, our C18700 maintains an electrical conductivity of up to 98% IACS, crucial for the next generation of 5G infrastructure and EV power modules.
We adhere to IATF 16949, ISO 9001, and ISO 14001. All products are fully compliant with RoHS and REACH regulations, ensuring seamless integration for global enterprises.
From Plasma Cutting Electrodes to specific OEM alloys tailored to your blueprint.
Learn More →In today's volatile market, procurement managers seek more than just a C18700 factory; they seek a resilient partner. China's copper alloy supply chain, led by innovators like Kepai, offers unmatched advantages:
Kepai has successfully exported to high-demand markets including Germany, Japan, and the USA, establishing a reputation for "Quality First" in the global distribution network.
The demand for copper is projected to double by 2035. For C18700 specifically, the trend is shifting towards:
1. Miniaturization: Requiring ultra-fine grain structures for micro-machining.
2. Sustainability: Circular economy models where scrap copper is recycled back into high-purity billets.
3. Digital Twins: AI-driven material modeling to predict alloy performance in extreme environments.
We provide localized technical support for global clients, ensuring that our C18700 products meet specific regional standards like DIN, JIS, and BS. Our compliance team ensures all documentation for customs and environmental auditing is provided upfront, mitigating risk for international buyers.
While both are free-machining, C18700 uses lead as the machining agent, which can offer slightly better surface finish in certain high-speed turning operations. C14500 is often preferred for applications requiring total lead-free compliance.
Yes, C18700 has excellent soldering and brazing properties. However, caution should be used during welding due to the lead content, which can affect weld pool integrity.
Standard billets and rods are typically shipped within 3-4 weeks. Custom profiles or specific grain size requirements may take 6-8 weeks depending on the order volume.
Absolutely. Every shipment is accompanied by a Mill Test Certificate (MTC) according to EN 10204 3.1, detailing chemical composition and physical properties.
Sichuan Kepai is a direct manufacturer with its own 29,000 sqm factory. We handle the entire process from smelting to final inspection.
Contact our technical sales team today for a comprehensive breakdown of costs and logistics for your specific C18700 requirements.
Partner with Sichuan Kepai New Material for industry-leading C18700 Copper solutions.
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