Discover Kepai's flagship C14500 tellurium copper rods, profiles, and wire configurations developed specifically to withstand strict European DIN testing regimes.
Our top-tier conductive material offers unmatched thermal dissipation and electric-arc resistance, perfect for automotive switchgear assemblies in Germany.
View Specifications
Unmatched purity levels offering maximum conductivity and excellent protection against hydrogen embrittlement in critical applications.
View Specifications
Expertly engineered to deliver an 85% machinability rating, drastically reducing tooling wear on automated German CNC systems.
View Specifications
Optimized for long life cycles under demanding cyclic thermal environments, satisfying strict VDE and EN compliance frameworks.
View SpecificationsGermany has long maintained its status as the industrial engine of Europe, driven by its commitment to engineering precision, automation, and high-performance quality standards. In this landscape, materials are expected to meet strict requirements. Standard electrolytic tough pitch copper (ETP) offers excellent electrical conductivity, but it presents significant challenges when subjected to high-speed CNC machining. Conversely, free-machining brass offers high productivity but lacks the electrical and thermal properties needed for modern high-current applications.
C14500 Tellurium Copper (CuTe) bridges this gap. By incorporating controlled levels of tellurium (typically between 0.4% and 0.7%), metallurgical engineers can create copper telluride (Cu2Te) inclusions. These microscopic inclusions function as natural chip breakers during precision turning, milling, and drilling operations, dramatically lowering cutting forces and reducing friction-induced heat.
Within Germany's automotive industry (especially in Baden-Württemberg and Bavaria), the shift toward electric vehicle (EV) architectures has created challenges in thermal and electrical contact performance. High-speed EV charging interfaces—such as CCS Type 2 plug systems—must handle currents exceeding 400A under safe operating temperatures. C14500 Tellurium Copper achieves over 93% IACS (International Annealed Copper Standard) conductivity while allowing manufacturers to machine complex connector profiles with tight tolerances. This minimizes contact resistance, controls heating, and prevents thermal degradation.
In addition, German manufacturers of plasma and laser-cutting machines rely on Tellurium Copper for torch tips and gas nozzles. The material's high thermal conductivity dissipates heat away from critical cutting edges, while its high recrystallization temperature prevents dimensional distortion during extended high-temperature operations.
The 85% machinability index increases tool life by up to 400% compared to pure copper, lowering machining costs for German contract manufacturers.
Retains near-peak electrical and thermal transmission efficiency, far exceeding standard brass (28% IACS) and bronze alloys.
Kepai’s Oxygen-Free Tellurium Copper (OFT) avoids micro-fissuring and structural failure during high-temperature brazing processes.
Established in 2017, Sichuan Kepai New Materials Co., Ltd. has developed into a specialized manufacturer of high-performance copper alloys. Our 9,000-square-meter facility in the Sichuan Guanghan Industrial Development Zone integrates smelting, extrusion, cold drawing, straightening, and finishing operations under one roof. This configuration ensures consistent quality across our entire production portfolio.
For German procurement teams, sourcing from Kepai offers distinct supply chain advantages:
By maintaining a vertically integrated facility, Kepai minimizes common defects—such as spatial composition variations and oxygen inclusions—that often occur when outsourcing smelting or drawing to third parties. Our raw materials are refined in induction melting furnaces using advanced protective atmospheres to control trace elements. This process produces high-purity C14500 and OFT alloys with minimal impurities, meeting and exceeding international ASTM B301/B301M and European EN 12164 standards.
Our location in Western China also provides strategic logistics options. Through the Chengdu-Europe Express Railway, we can transport finished copper bars, wires, and profiles directly to major German logistics hubs like Duisburg, Hamburg, and Munich in 15 to 18 days. This offers a faster alternative to traditional maritime shipping while remaining more cost-effective than air freight.
Ensuring high performance requires rigorous quality testing. Kepai utilizes a range of advanced manufacturing and inspection equipment to monitor material properties at every stage, from melting to final dispatch.
Smelting & Casting Control
Precision Laying-off Processes
Heavy-Duty Extrusion Press
Cold Drawing Capabilities
Straightening Equipment
Standardized Packaging Lines
Eddy Current Conductance Testing
Chemical Composition Lab
Metallographic Polishing
Electro-Hydraulic Servo Testing
Universal Mechanical Testing
Brinell/Vickers Hardness Testing
The global push toward decarbonization has accelerated the electrification of transport, power distribution, and industrial manufacturing systems. Consequently, demand for copper alloys with high electrical conductivity and robust mechanical properties is growing rapidly.
This shift is particularly clear in Germany’s renewable energy and smart grid sectors. Wind and solar installations, which often operate in demanding marine and outdoor environments, require power electronics that can withstand cyclic thermal loads and resist atmospheric corrosion.
C14500 Tellurium Copper provides an effective solution for these systems. Its phosphorus-deoxidized matrix limits oxygen content, protecting the alloy from embrittlement in hydrogen-rich or reducing atmospheres. This feature makes it highly suitable for hermetic seals, cooling tubes, and gas distribution components in next-generation green hydrogen production facilities throughout Central Europe.
For international purchasing managers, managing the Total Cost of Ownership (TCO) of these materials is critical. Sichuan Kepai helps optimize TCO by producing high-yield, net-shape profiles and customized extrusions. By delivering extruded profiles shaped to your specific requirements, we help German manufacturers reduce machining waste and minimize overall manufacturing costs.
Our production lines maintain compliance with European safety and environmental regulations, including RoHS, REACH, and ISO 9001.
International metal sourcing requires careful balancing of material cost, logistics lead times, quality assurance, and compliance risks. German industrial standards leave no room for deviation.
Sichuan Kepai simplifies international purchasing by providing:
By utilizing optimized production routes and direct logistics through the China-Europe railway, we help German businesses reduce procurement lead times while ensuring access to high-conductivity copper alloys.
Find answers to frequently asked technical and commercial questions about Tellurium Copper applications, logistics, and processing.
In addition to C14500, Kepai offers a range of high-conductivity, high-strength copper alloys designed for demanding electrical, automotive, and industrial applications.
Combining the machinability of C14500 with high purity levels to prevent hydrogen embrittlement in demanding vacuum electronics.
View Product
Designed for ultra-high conductivity applications, including wind turbine generators and industrial power transformers.
View Product
Combines high hardness and fatigue resistance with good conductivity, suitable for contact springs and connector terminals.
View Product
Offers excellent wear resistance and low friction, designed for heavy-duty automotive and machinery bearings.
View Product
Maintains high electrical and thermal conductivity, suitable for busbars, electrical panels, and industrial grounding systems.
View Product
Formulated to offer excellent spring properties, wear resistance, and high electrical conductivity in switchgear and relays.
View Product
Designed to maintain high mechanical strength and electrical conductivity under high temperatures, ideal for automotive assembly lines.
View Product
Formulated for applications requiring a combination of moderate thermal conductivity and high yield strength at elevated temperatures.
View ProductPartner with Sichuan Kepai to source high-conductivity C14500 and specialized copper alloys that meet your precise manufacturing requirements. Contact our engineering team for customized profiles and batch pricing.
Send Inquiry Now
Kepai