Explore our flagship range of high-performance tellurium copper, beryllium bronze, and custom wear-resistant alloys engineered to global specification benchmarks.
Established in May 2017, Sichuan Kepai New Materials Co., Ltd. has developed into a premier high-tech enterprise focusing on the complete manufacturing lifecycle—incorporating robust R&D, sophisticated vertical production systems, and global logistics optimization. Specialized in custom OEM Bronze Copper+ materials, we engineer tailored grades that merge exceptional electrical conductivity with the extreme mechanical properties demanded by the modern automotive, plasma cutting, medical device, and aerospace sectors.
Our core mission revolves around addressing critical material science challenges. Traditional copper alloys have long presented a compromise: either providing excellent electrical pathing at the cost of poor machining characteristics, or offering excellent cutting speeds at the expense of high tool wear and degraded electrical behavior. Through patented high-conductivity oxygen-free tellurium copper processes and controlled sulfur-copper matrix precipitation, Kepai offers a zero-compromise solution designed for precision Swiss-type lathes and high-speed CNC manufacturing centers.
An Industrial Guide on Engineering High-Performance Copper Alloys for Critical Wear, High-Conductivity, and High-Temperature Environments.
In contemporary electrical and mechanical engineering, the demand for performance optimization has pushed materials to their thermodynamic limits. Pure copper (such as standard ETP or oxygen-free copper grades) provides exceptional electrical conductivity peaking above 100% IACS (International Annealed Copper Standard). However, its yield strength, fatigue resistance, and thermal softening temperatures are notoriously low, rendering it useless under high dynamic loading or high-temperature friction conditions.
To solve this, alloying addition is the primary mechanism. Adding zinc, tin, aluminum, or nickel changes the crystal grid structure to create traditional bronze and brasses. Yet, standard solutions often cause massive degradation of electrical pathing; for instance, standard phosphor bronze yields only 15% to 20% IACS. Our OEM Bronze Copper+ category integrates micro-alloying and precipitation-hardening techniques (utilizing trace elements of beryllium, cobalt, chromium, zirconium, tellurium, or sulfur) to preserve a high baseline conductivity (up to 85-93% IACS for tellurium copper, and 45-60% IACS for premium beryllium-cobalt-copper alloys) while simultaneously driving tensiles upward of 1400 MPa.
The global high-performance copper alloy market is experiencing a profound transition driven by electrification, smart infrastructure, and high-speed CNC manufacturing demand. The rise of Electric Vehicles (EVs) alone requires a reliable supply chain of connectors, high-current charging pins, and busbars that can withstand prolonged thermal cycling without degradation. Similarly, the aerospace and deep-sea exploration markets require materials immune to stress corrosion cracking (SCC) and biofouling.
As a premier OEM manufacturer, Sichuan Kepai New Materials operates under stringent control configurations to stabilize raw material procurement, vertical integration of continuous casting, extrusion, and drawing processes. This vertical structure protects global clients against the violent price fluctuations of primary metals and guarantees chemical uniformity down to parts-per-million (ppm) levels. Through our advanced Sichuan refinery, we deliver customized cross-sections, precision profiles, and tight-tolerance wire/rod configurations globally, serving over 1,000 major manufacturing hubs across North America, Europe, and East Asia.
Operating internationally requires more than exporting alloy rods; it demands direct localized engineering support and full regulatory compliance. Kepai’s technical sales division partners directly with customer design desks during the initial prototyping phase. Whether verifying stress relaxation margins in high-density spring contact designs or running thermal simulations on heavy-duty plasma cutting electrode nozzles, our in-house metallurgical team provides actionable computational modeling data.
Compliance represents the cornerstone of modern corporate responsibility. All of Kepai’s manufacturing stages have passed standard audits, securing ISO 9001:2015 for quality systems, ISO 14001:2015 for environmental standards, and OHSAS 45001:2018 for occupational health. Crucially, our ongoing material research supports global environmental mandates like Europe's RoHS and REACH regulations. By designing next-generation lead-free, high-machinability alternatives using bismuth, tellurium, and sulfur compounds, we ensure our global partners can easily clear stringent border control declarations and environmental product declarations (EPDs).
High-purity copper exhibits natural antimicrobial behaviors. Our advanced custom alloys are engineered into surgical instrumentation, MRI signal pathings, and cleanroom interfaces where biocompatibility meets structural strength.
New energy charging terminals process high currents continuously. The high conductivity and softening resistance of C14500 and C14700 alloys prevent localized thermal runaway, guaranteeing safe rapid-charge capabilities.
In rocketry, telemetry shieldings, and internal power alternators, our premium beryllium-cobalt-copper alloys deliver robust mechanical reliability under extreme shock, vibration, and ultra-cold vacuum cycles.
Unmatched resistance against salt spray, chemical attacks, and dynamic cavitation. Ideal for ship propellers, specialized dynamic marine bushings, underwater fasteners, and robust seawater cooling circuits.
Plasma arc cutting nozzles operate under intense heat. Standard copper fails rapidly due to localized erosion. Our specialized high-purity oxygen-free tellurium copper grades yield clean electrode discharge channels, uniform heat dissipation, and extended consumable lifespans, lowering operation overheads for dynamic cutting industries globally.
The trajectory of advanced metallurgy points toward cleaner, more precise microstructures. Historically, adding lead was the standard mechanism to improve machinability in alloys such as leaded brass C36000 or leaded copper bronze. When cutting, lead act as an internal lubricant, reducing the friction coefficient and causing the chips to fracture cleanly. Today, environmental directives demand the complete elimination of lead.
Our research division has established a dynamic technical roadmap focused on "Green Free-Cutting Alloys". By replacing toxic lead atoms with stable tellurides and sulfides, we achieve excellent micro-chip fragmentation on Swiss-type turning centers without risking environment contamination. These elements distribute as tiny, isolated particles within the copper structure, breaking chips efficiently while leaving the surrounding copper crystal matrix unimpeded to carry electrical current.
Simultaneously, we are developing vacuum-induction-melted (VIM) super-alloys that integrate chromium, zirconium, and cobalt to generate nanometer-scale secondary phase precipitates during heat treatment. These sub-microscopic blockages lock dislocations in the copper crystal grid, maintaining high structural rigidity and yield strengths under operating temperatures up to 500°C.
Providing high-precision materials custom-tailored to global tolerances and mechanical classifications.
Grades: C14500, OFT High Conductivity
Delivers up to 93% IACS conductivity while optimizing lathe cutting speeds. Unmatched suitability for gas cutting nozzles, plasma electrodes, high-voltage EV connectors, and heavy-duty switchgear components.
Grades: C17200, C17300, C17500, C17510
The high-strength king of non-ferrous metals. Hardened to reach tensiles up to 1400 MPa. Perfect for high-fatigue springs, pressure sensors, dynamic non-sparking hand tools, and aerospace landing gear bushings.
Grades: C14700, Free-Cutting Matrix
Our ecological response to leaded brass. Offers exceptional electrical conductivity, superb anti-sticking properties under high heat, and extremely clean high-speed micro-machining capabilities on Swiss-lathes.
Grades: C36000, Custom High-Wear Bronzes
Featuring a low friction coefficient, exceptional wear resistance, and resistance to corrosion and seizing. Engineered primarily for industrial planetary gear bushings, wear plates, heavy thrust washers, and marine pump sleeves.
Grades: C10100, C11000, High Purity Tubes & Foils
Smelted under strict vacuum conditions to keep oxygen levels below 5 ppm. Guarantees maximum signal path integrity, preventing hydrogen embrittlement during brazing or welding. Indispensable for semiconductor fabrication, vacuum electronics, and ultra-high-vacuum (UHV) science fields.
Answering high-intent technical questions from engineers, buyers, and plant directors concerning material performance, specifications, and manufacturing.
Have custom requirements for high-conductivity parts, specialized tolerances, or green lead-free alternatives? Get a professional consultation and quotation within 24 hours.
Send Technical InquiryComplete your supply chain requirements with our specialized sulfur-copper matrices, chromium-zirconium alloys, and ultra-purity oxygen-free pure coppers.
Kepai New Material
