Explore our elite portfolio of high-purity and micro-alloyed copper products engineered for severe industrial operations.
Sichuan Kepai New Materials Co., Ltd., established in May 2017, is a premier, high-tech manufacturing entity dedicated to the research, development, custom fabrication, and global export of advanced metallurgical solutions.
We specialize in the creation of ultra-high conductivity, high-strength free-cutting tellurium copper, oxygen-free copper, and an array of tailored high-performance copper alloys designed for modern, high-precision industrial sectors. Strategically positioned as an industry leader, our state-of-the-art facilities bridge the gap between basic raw copper materials and critical electrical, mechanical, and aerospace components.
By implementing cutting-edge extrusion processes, high-precision drawing lines, and integrated thermal processing controls, Kepai delivers custom pure copper bars that strictly satisfy global demands for chemical purity, dimensional accuracy, and exceptional thermodynamic performance.
Understanding chemical compositions, conductivity thresholds, and crystalline structures crucial to engineering operations.
Representing the industry standard for general electrical and structural projects. C11000 features a minimum copper purity of 99.90% and exhibits an electrical conductivity rating of at least 100% IACS (International Annealed Copper Standard). It is highly optimized for busbars, switches, grounding arrays, and power distribution terminals where thermal dissipation is critical.
Specifically processed to limit residual oxygen to less than 10 ppm (parts per million). C10100 (OFE - Oxygen-Free Electronic) features a refined purity level of 99.99%, providing resistance to hydrogen embrittlement when exposed to reducing atmospheres at high temperatures. It is highly valued for high-vacuum electronics, particle accelerators, and semiconductor tooling.
A precision-alloyed material combining the thermal and electrical performance of high-purity copper with superior machining characteristics. By incorporating controlled levels of tellurium (0.4%–0.7%), C14500 retains approximately 93%–98% IACS conductivity while increasing the material machinability rating to 85% relative to free-cutting brass (100%).
Why leading global corporations partner with Sichuan Kepai for high-volume custom pure copper fabrication.
The southwestern industrial corridor of China, home to Sichuan Kepai, is recognized for its abundant hydroelectric power and rich primary non-ferrous reserves. By leveraging local, low-carbon energy infrastructure, we greatly reduce the carbon footprint associated with smelting and refining high-purity copper.
Additionally, China’s industrial ecosystem provides complete local access to essential alloying materials like Tellurium, Beryllium, and Zirconium, minimizing supply chain risks and stabilizing material costs.
Kepai operates highly automated continuous extrusion (Conform) machines alongside modern upward continuous casting lines. These advanced technologies prevent typical defects like micro-voids, oxide inclusions, and scale lines. Rigorous automated drawing systems guarantee incredibly tight tolerances (+/-0.02mm) across round, square, hexagonal, and custom-profile flat copper bars.
Every delivery batch is accompanied by comprehensive chemical composition reports via Optical Emission Spectrometry (OES), Inductively Coupled Plasma (ICP) analysis, and electrical conductivity verifications (IACS testing).
Our in-house die design department can engineer, validate, and mill custom extrusion tooling configurations within 10 to 14 working days, significantly reducing project lead times for new engineering specifications.
We comply fully with RoHS and REACH standards. We feature enclosed air filtration setups and closed-loop process water recycling, aligning with the sustainability objectives of global corporate buyers.
From deep-sea engineering to orbital systems, our custom copper bars excel under demanding operational stresses.
High-purity oxygen-free copper (OFC) serves as the primary material inside Magnetic Resonance Imaging (MRI) scanners and radiation therapy equipment. Excellent chemical purity prevents signal interference and magnetic field distortion, while copper's inherent antimicrobial properties make it ideal for high-touch hospital installations.
Electric propulsion systems demand high-amperage current transmission. Our custom pure C11000 and tellurium copper flat bars are widely used in critical battery busbars, high-voltage distribution terminals, high-speed EV charging interfaces, and heavy-duty hybrid electric drive motors.
High-altitude generators, navigation instrumentation, and communications hardware operate in extreme thermal and atmospheric environments. Our micro-alloyed chromium-zirconium copper (C18150) and high-strength beryllium copper alloys provide structural durability and wear resistance without compromising essential electrical and thermal performance.
Offshore structural components must withstand seawater corrosion and biological fouling. Advanced copper-nickel and specialized lead-bronze compositions offer robust bio-fouling protection and corrosion resistance, securing underwater communications, marine power grids, and deep-sea exploration operations.
Large-scale photovoltaic plants and utility-grade battery energy storage systems (BESS) require high-conductivity busbar grids to minimize line losses. Kepai's custom-engineered pure copper profiles optimize the performance and efficiency of power conversion systems.
Plasma cutting electrodes and electrode holders demand optimal thermal and electrical transfer under intense arc heat. Our proprietary oxygen-free tellurium copper stands up to severe operating wear, extending consumable lifespan and reducing industrial downtime.
A forward-looking analysis of next-generation copper metallurgy, sustainability targets, and processing trends.
Modern electrical installations require conductors that maintain high conductivity while demonstrating superior physical strength and creep resistance. Micro-alloying (incorporating precise levels of elements like Chromium, Zirconium, Tellurium, or Iron) enables precipitation hardening. This alters the crystal structure, maintaining over 90% IACS electrical conductivity while doubling the alloy's mechanical yield strength.
High-resolution 3D printing of pure copper components is transforming industrial design. The process requires ultra-pure, spherical, and gas-atomized copper powders that have zero internal micro-cavities. By optimizing high-purity, oxygen-free raw stock, Kepai produces high-density feedstocks that support advanced laser powder bed fusion (L-PBF) operations.
How our comprehensive quality assurance framework supports supply chain continuity and regulatory compliance.
Sichuan Kepai operates in strict accordance with ISO 9001:2015 (Quality Management), ISO 14001:2015 (Environmental Management), and OHSAS 45001:2018 (Occupational Health and Safety). Every step of our manufacturing workflow is documented and traceable, meeting the safety requirements of international compliance inspectors.
We maintain an in-house R&D division staffed by metallurgy experts and structural engineers. We collaborate with national technical research centers to continuously improve physical performance, refine our high-conductivity tellurium copper alloys, and help customers develop custom alloy profiles tailored to unique applications.
Every shipment is marked with an individual batch identification number, linking directly to the corresponding chemical composition metrics, hardness ratings, and conductivity data. We use specialized transport packaging, including moisture-resistant barrier wraps and heavy-duty wooden framing, to ensure materials arrive in perfect condition.
Answering critical engineering questions regarding chemical purities, machining methods, and custom copper manufacturing.
Compare our specialized brasses, bronzes, and high-strength precipitation-hardened copper profiles.
Request detailed material spec sheets, custom dimensional quotes, or consult with our metallurgical specialists today.
Whether your project requires high-conductivity C11000 ETP bars for electrical switchgear or custom-extruded C14500 tellurium copper profiles for precision CNC applications, our team delivers high-quality solutions on time.
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