Explore our foundational range of high-performance tellurium, beryllium, phosphor, and sulfur coppers engineered for superior thermal and electrical conductivity.
Oxygen-free high conductivity tellurium copper engineered specifically for electrical applications requiring high conductivity, machinability, and resistance to hydrogen embrittlement.
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Custom-engineered tin-phosphorus bronze alloy. Features exceptional elastic properties, high strength, and superior wear resistance, optimized for precision electrical springs and connectors.
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A highly efficient free-machining copper alloy containing controlled sulfur levels. Combines excellent electrical conductivity (exceeding 90% IACS) with excellent machinability.
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High-strength, precipitation-hardened copper-beryllium alloy with added lead for maximum machinability. Delivers reliable performance in high-stress electrical components.
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Premium heat-resistant copper alloy characterized by excellent electrical conductivity, thermal conductivity, and high hardness at elevated temperatures, ideal for welding electrodes.
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High-conductivity, high-strength beryllium-cobalt-copper alloy offering outstanding thermal stability, wear resistance, and high structural reliability in demanding environments.
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Engineering-grade brass alloy combining high cold ductility and mechanical strength. Specially rolled for deep drawing, stamping, bending, and complex structural formwork.
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Nickel-silicon precipitation strengthened copper alloy. Boasts high structural strength, softening resistance, and excellent electrical conductivity, ideal for heavy-duty connections.
View SpecificationsEstablished in May 2017, Sichuan Kepai New Materials Co., Ltd. is a high-tech private enterprise specializing in the research, development, production, and global export of high conductivity, high strength free-cutting tellurium copper and other specialized copper alloys.
From our state-of-the-art facility, we service the global high-power electrification, precision electronics, and thermal management industries. Through proprietary manufacturing processes, we bypass the traditional trade-off between conductivity and machinability, supplying metals that set new standards in purity, mechanical properties, and structural integrity.
Analysis of high conductivity copper's role in driving energy transition, clean technology, and precision microelectronics globally.
Global transition to smart grids and high-voltage transmission requires ultra-low loss materials. Our Oxygen-Free High Conductivity Tellurium Copper offers greater electrical performance and durability under thermal cyclical loads.
Electric vehicle fast-charging infrastructures require high-conductivity components. Our C14500 tellurium copper alloys are widely deployed in DC high-power terminals and contact pins to control resistance and heat generation.
Whether in high-speed welding electrodes (C18150) or precision aerospace gearboxes (Lead Bronze), our alloys provide the necessary hardness, wear resistance, and high electrical load support required in extreme industrial environments.
At Sichuan Kepai, our development roadmap centers on modifying alloy microstructures to achieve high performance under critical operating conditions.
Our engineering-grade alloys are deployed in high-stress, high-purity, and high-frequency environments worldwide.
Utilized in magnetic resonance imaging (MRI) equipment, radiation shielding components, and precise surgical electronics due to the alloys' high non-magnetic purity, electrical performance, and stability.
High thermal conductivity is essential to limit heating in EV battery packs and high-power connections. Our Tellurium Copper components deliver reliability during high-power fast charging.
Used in high-altitude electrical connectors, radar structures, and auxiliary power units where resistance to vibration, stress relaxation, and extreme thermal variation is required.
Alloy systems specifically customized to withstand marine environments. Resists bio-fouling and galvanic corrosion in deep-sea sensors, offshore power generation systems, and marine structures.
Specially developed to resist thermal erosion in high-frequency plasma torches, nozzle tips, and contact tips. Minimizes downtime and improves cutting precision under high temperatures.
We configure specialized compositions including variable nickel, cobalt, and phosphorus content to match clients' friction, electrical, and environmental constraints.
In addition to our strong share of the domestic copper alloy market, Kepai has established an international footprint, exporting premium alloys to leading global industrial corporations.
Quality and consistency backed by rigorous testing protocols, advanced manufacturing lines, and international compliance certifications.
We maintain an in-house laboratory to analyze every melt charge. Our quality control team checks every batch for exact chemical composition, conductivity, hardness, and straightness to ensure consistency across shipments.
Sichuan Kepai has passed ISO9001:2015, ISO14001:2015, and OHSAS 45001:2018 certifications, reflecting our international standards in quality, environmental stewardship, and occupational health and safety.
Additionally, we work closely with tier-one global suppliers in automotive and electronics industries, aligning our production with strict international requirements like RoHS, REACH, and IATF 16949 standards.
In-depth technical answers addressing common engineering queries regarding high conductivity copper alloys.
OFT Tellurium Copper is processed in an oxygen-controlled atmosphere to keep oxygen levels below 10 ppm. This low oxygen content prevents hydrogen embrittlement during brazing or welding. In contrast, standard tellurium copper may contain higher trace oxygen, which can cause micro-voids and cracking when exposed to hydrogen at elevated temperatures.
C19160 is a nickel-silicon precipitation strengthened copper alloy. By using thermal aging processes, we precipitate fine silicides within the copper matrix. These silicides block dislocation movement, which increases structural strength and softening resistance. Because the alloying elements precipitate out of solid solution, the copper matrix remains clean, preserving high electrical conductivity (typically exceeding 50-60% IACS depending on temper).
Tellurium is added to copper to improve its machinability. It forms small copper telluride particles within the copper matrix. These particles act as chip breakers during machining, reducing tool wear and heat buildup. This allows for higher machining speeds (reaching a machinability index of 85% relative to free-cutting brass) while retaining up to 98% of the electrical conductivity of pure copper.
C18150 contains chromium and zirconium, which form secondary phases upon heat treatment. This composition helps the alloy maintain its mechanical strength and hardness at elevated temperatures, resisting softening up to 500°C. Combined with high electrical and thermal conductivity, C18150 is suited for resistance spot welding electrodes, where it withstands cyclic thermal and mechanical stresses.
We source raw materials of documented purity and run controlled refining processes. Every production batch is tested for hazardous substances to meet RoHS and REACH standards. We also offer specialized sulfur-doped and lead-free copper alloys as alternatives for applications with strict lead-content restrictions.
Contact our metallurgy specialists for customized material profiles, OEM production, and competitive exporting options.
Send Inquiry NowBrowse our selection of specialized alloys, including high-elasticity beryllium coppers, wear-resistant bronzes, and free-machining sulfur coppers.
High-conductivity, high-strength beryllium copper alloy (CuNi2Be). Commonly used in high-stress electrical contacts, resistance welding equipment, and spring connectors.
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High-performance free-machining copper alloy. Provides an optimal combination of electrical conductivity, thermal conductivity, corrosion resistance, and machinability.
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Leaded bronze alloy formulated for low friction and wear resistance. Ideal for sleeve bearings, bushings, and high-load sliding components in machinery.
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A detailed technical profile of our high-performance tellurium copper alloy, showcasing its metallurgical characteristics and key applications in precision engineering.
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Our standard-setting C14500 tellurium copper material, available in wire, rod, and sheet forms to support precision CNC machining and automated production lines.
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OEM-grade leaded copper bronze material. Combines high thermal conductivity with self-lubricating properties, reducing friction and wear under load.
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High-machinability beryllium copper alloy containing trace lead. Delivers high strength, wear resistance, and reliable conductivity for electronic contacts.
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OEM high-performance oxygen-free copper. Characterized by high electrical and thermal conductivity (100% IACS minimum) and resistance to hydrogen embrittlement.
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Kepai New Material