Explore our elite portfolio of high-conductivity, high-strength copper and specialized brass alloys engineered to exceed strict global standards.
Established in May 2017, Sichuan Kepai New Materials Co., Ltd. has rapidly emerged as a preeminent high-tech enterprise focusing on the R&D, advanced processing, and global supply of premium copper-based materials. Spanning over 29,000 square meters of state-of-the-art manufacturing floor space, our facility bridges the gap between metallurgical innovation and industrial scalability.
We specialize in the high-volume extrusion, casting, and precision drawing of high-conductivity, high-strength free-cutting tellurium copper, beryllium copper, phosphor bronze, and eco-friendly lead-free brass formulations. Driven by a mission to address the stringent requirements of clean energy, aerospace, and medical engineering, we provide customized material solutions with verified chemical consistency and dimensional accuracy.
Whether you require components designed for deep drawing (such as our high-ductility C26000 brass) or need specialized materials capable of withstanding extreme mechanical stresses (such as C17200 beryllium copper), Kepai provides the technical support, certified consistency, and supply chain stability required to elevate your market competitiveness.
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Bridging the Gap Between Advanced Metallurgy and Emerging Global Industrial Demands
The global transition to electrification, smart grids, and electric vehicles (EVs) has accelerated the demand for high-performance copper-based alloys. Traditional brass is no longer sufficient for systems requiring high electrical currents, necessitating specialized alloys like tellurium copper (C14500) and beryllium copper (C17200).
Strict environmental and safety standards worldwide, including RoHS and REACH, require manufacturers to minimize lead contents. Our team is at the forefront, engineering high-machinability, low-lead and lead-free alternative alloys that align with future regulatory frameworks without sacrificing tool wear life.
Modern automated manufacturing lines operate at unprecedented feeds and speeds. Highly abrasive materials increase tool wear and operational costs. We develop free-cutting copper alloys containing micro-alloyed tellurium or sulfur to achieve a machinability index of up to 85% compared to free-cutting brass.
How Sichuan Kepai engineers superior mechanical and electrical performance at the molecular level
Traditional open-air melting of copper alloys introduces oxygen, causing internal oxide inclusions that compromise ductility and fatigue strength. Sichuan Kepai implements a specialized vacuum induction melting (VIM) process. This allows our metallurgists to control trace element additions down to the parts-per-million (ppm) scale.
In our high-conductivity Oxygen-Free Tellurium Copper (OFT), we reduce the residual oxygen level to below 5 ppm, virtually eliminating the risk of hydrogen embrittlement during subsequent brazing or welding processes. This ensures an electrical conductivity rating of over 93% IACS (International Annealed Copper Standard).
Through multi-stage solution heat treatment and subsequent aging, elements such as beryllium, nickel, and silicon form sub-microscopic precipitates within the copper matrix. This yields tensile strengths exceeding 1380 MPa in C17200 alloy, while maintaining reliable conductivity.
By utilizing controlled cold-reduction and recrystallization annealing cycles, we produce brass alloys (such as C26000) with homogeneous grain structures. This eliminates structural anisotropy, making them ideal for high-stress deep drawing and stamping operations.
The addition of sulfur (as in C14700) or tellurium (as in C14500) results in the formation of fine, uniformly distributed soft particles. During machining, these particles act as natural chip breakers, reducing friction at the tool tip and decreasing tooling wear.
Operating a vertical production line in Sichuan, China, grants Kepai a competitive advantage in terms of raw material sourcing, processing integration, and shipping logistics. China produces a significant share of the world's refined copper and alloying elements like tellurium. This proximity to raw material supplies protects our customers from volatile international freight costs and geopolitical supply chain disruptions.
Our integrated facility carries out every production phase in-house: casting, billet preparation, extrusion, drawing, straightening, non-destructive testing, and final packaging. By eliminating third-party processors, we maintain close control over quality parameters while reducing production lead times compared to fragmented supply chains.
Additionally, our location provides convenient access to high-speed rail networks and deep-water ports. This enables us to offer reliable, cost-efficient shipping options to industrial hubs across North America, Europe, and the Asia-Pacific region.
Delivering target performance across critical high-precision industries
Copper alloys have natural oligodynamic antimicrobial properties. In medical instruments and structural hardware, our customized, high-strength brass alloys provide corrosion resistance and structural durability while meeting hygiene and infection-control requirements.
EV high-power fast charging connections generate significant thermal energy. Our high-conductivity tellurium copper alloys (C14500) limit resistive heating in charging contacts, helping OEMs design safer, more efficient charging systems.
Aerospace applications require materials that perform reliably under high-vibration and extreme-temperature conditions. Our high-elasticity beryllium copper alloys (such as C17200) are utilized in electrical contacts, springs, and instrument switches.
Seawater environments cause rapid galvanic and pitting corrosion in standard metals. Our specialized phosphor bronzes and brasses resist corrosion and biofouling, extending the service life of marine fasteners and underwater valves.
Plasma cutting electrodes are exposed to continuous electric arcs and high temperatures. Kepai's tellurium copper provides the electrical and thermal conductivity required to stabilize the arc while minimizing electrode degradation.
Utility-scale PV storage systems operate under high-voltage conditions for decades. Our durable conductive alloys reduce transmission losses and mechanical failure rates in battery terminals and busbars.
Certifications and testing protocols protecting your supply chain integrity
Our development of Oxygen-Free Tellurium Copper with independent intellectual property rights meets the requirements of demanding high-end manufacturing applications.
Our operations comply with international quality, environmental, and safety standards, including ISO 9001:2015, ISO 14001:2015, and OHSAS 18001/ISO 45001:2018.
We prioritize environmental responsibility, offering RoHS-compliant, low-lead, and lead-free alloy alternatives that support sustainable product lifecycles.
To verify the quality of every production lot, our quality control team employs advanced testing instrumentation. Our internal laboratory performs Optical Emission Spectrometry (OES) to verify chemical compositions, ultrasonic flaw detection to identify internal porosity, and eddy current testing to verify electrical conductivity. Full material test reports (MTRs) and mill test certificates are provided with every shipment.
Unlocking superior material capabilities through continuous scientific research
Our specialized research group focuses on copper-based alloy formulations and processing techniques. This in-house expertise allows us to collaborate directly with customers on custom alloy designs.
We have successfully commercialized high-conductivity, oxygen-free tellurium copper. This material offers lower hydrogen embrittlement risks than standard tellurium copper while maintaining excellent machinability.
Our quality, environmental, and occupational health systems are certified to ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 standards.
We contribute to the development of national and industry standards for tellurium copper and other specialized copper alloys, supporting technical advancement across the sector.
We utilize energy-efficient melting systems, closed-loop water filtration, and advanced baghouse dust collection systems. These investments minimize emissions and our environmental footprint while maintaining safe, sustainable operations.
Addressing key material, processing, and logistics considerations
Free-cutting brass contains approximately 35% to 40% zinc, which reduces its electrical conductivity to around 26% IACS. Tellurium copper (C14500) contains over 99% copper combined with trace tellurium. This micro-alloyed structure provides an electrical conductivity rating of ≥93% IACS while maintaining 85% of the machinability of free-cutting brass. This allows components to carry higher electrical currents with lower resistive heating.
We perform chemical composition verification using raw material inspection and Optical Emission Spectrometry (OES) during melting. Each production lot is tracked by heat number from casting to final shipment. Mill test certificates detailing chemical compositions and mechanical properties are provided with every order.
We supply C17200 in a range of tempers, including solution-annealed (TB00/A), cold-worked (TD02/H), and precipitation-hardened (TF00/AT, TH02/HT) conditions. We offer rod diameters from 2 mm to 120 mm, wires, sheets, and thin foils. We can also provide custom dimensional tolerances to match specific automated Swiss screw machining applications.
Standard stocked items typically ship within 7 to 10 days of order confirmation. For custom extruded, drawn, or custom-packaged orders, typical lead times range from 20 to 35 days, depending on alloy complexity and quantity. We coordinate with major ocean, air, and express carriers to manage custom clearances and delivery logistics.
Yes. Our R&D team works with customers to develop custom alloys, adjustments to trace elements, and specific tempers. We can adjust parameters like grain size, hardness, tensile strength, and conductivity to match unique stamping, machining, or welding requirements.
Connect with our metallurgical engineering team. We provide material certifications, chemical analysis reports, and volume-pricing quotes for specialized applications.
Let us assist with your material selection
Contact Sichuan Kepai to speak with a technical sales representative regarding composition verification, sample requests, or custom alloy production runs.
Contact Our Engineering TeamHigh-performance copper, bronze, and brass materials processed to international specifications
Kepai New Material
