Explore our core range of precision-engineered copper materials, optimized for maximum electrical conductivity, thermal performance, and mechanical durability.
High-strength beryllium copper alloy engineered for demanding spring, connector, and heavy-duty industrial applications.
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Ultra-high purity oxygen-free copper designed for semiconductor, vacuum electronics, and high-conductivity applications.
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Electrolytic tough pitch copper offering exceptional electrical and thermal conductivity for power distribution systems.
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Phosphor bronze alloy featuring superior machinability, wear resistance, and high fatigue strength for bushings and bearings.
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Combining the high conductivity of oxygen-free copper with the outstanding machinability of tellurium copper.
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Highly efficient free-cutting copper alloy optimized for high-speed screw machine applications and electrical components.
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Excellent elastic properties combined with good electrical conductivity, ideal for electronic springs and connectors.
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Proprietary high-conductivity, free-cutting alloy designed for premium plasma cutting nozzles and EV charging connectors.
View DetailsC18150 Chromium Zirconium Copper (CuCr1Zr) represents the pinnacle of precipitation-hardening copper alloys. By precisely alloying copper with Chromium (typically 0.5% to 1.5%) and Zirconium (0.05% to 0.25%), metallurgists create a material that breaks the traditional compromise between mechanical strength and electrical conductivity. In its fully heat-treated state, C18150 achieves an electrical conductivity exceeding 80% IACS (International Annealed Copper Standard) while maintaining a tensile strength of up to 540 MPa and a softening temperature of 500°C.
"The addition of chromium and zirconium induces a highly controlled precipitation hardening phase during thermal treatment. This locks the crystalline structure against dislocation movement, allowing the alloy to withstand extreme thermal and mechanical stresses without losing its structural integrity or electrical efficiency."
In the modern industrial era, global manufacturing demands materials that can survive harsh, high-duty cycle environments. C18150 has emerged as the global standard for resistance welding electrodes, particularly within the highly automated automotive assembly lines of North America, Europe, and Asia. As automotive manufacturers transition to high-strength steels and aluminum alloys for vehicle lightweighting, the demands on welding parameters have intensified. C18150 electrodes provide the necessary resistance to deformation, pitting, and sticking, directly translating to reduced downtime and higher weld consistency.
Beyond welding, the rapid expansion of the global electric vehicle (EV) infrastructure, high-speed rail networks, and aerospace propulsion systems has created a surge in demand for C18150. Its ability to maintain mechanical properties at elevated temperatures makes it irreplaceable for continuous casting molds, semiconductor lead frames, and high-current switchgear components.
A High-Tech Pioneer in Specialized Copper Alloys
Established in May 2017, Sichuan Kepai New Materials Co., Ltd. is a premier high-tech enterprise specializing in the research, development, production, and sales of high-conductivity, high-strength free-cutting tellurium copper, chromium zirconium copper, and other advanced copper alloys. Operating from our state-of-the-art facility, we deliver engineered solutions that empower global industries.
Sichuan Kepai New Materials Co., Ltd. leverages China's highly integrated industrial ecosystem to offer unparalleled efficiency, quality consistency, and cost-effectiveness. Our production processes are optimized from raw material sourcing to final precision machining, ensuring that global procurement managers receive premium-grade C18150 copper alloys without the premium price tag.
We utilize advanced vacuum induction melting (VIM) and continuous casting technologies to eliminate oxygen and hydrogen entrapment, ensuring an exceptionally clean alloy matrix with minimal impurities.
Our proprietary multi-stage solution heat treatment and artificial aging processes are computer-controlled to guarantee uniform precipitation of chromium and zirconium phases across the entire batch.
By integrating R&D, casting, extrusion, drawing, and machining under one roof in Sichuan, we eliminate intermediate transport costs and maintain absolute quality control at every manufacturing node.
Our comprehensive product portfolio is categorized to meet specific engineering requirements. Each alloy category is backed by rigorous testing and international certifications.
High-conductivity, free-cutting alloys optimized for high-speed machining. Ideal for electrical connectors, plasma cutting nozzles, and new energy vehicle components.
The ultimate high-strength copper alloys. Offering outstanding elastic properties, wear resistance, and fatigue strength for critical aerospace and heavy industry parts.
Engineered for specific tribological and electrical applications, including self-lubricating bearings, high-load bushings, and marine hardware.
Our copper alloys are deployed globally across critical industries, driving efficiency, safety, and technological progress.
High-conductivity C18150 and Tellurium copper are vital for EV charging connectors, battery busbars, and traction motor components, ensuring minimal power loss and rapid heat dissipation.
Our high-strength beryllium copper and C18150 alloys are engineered for landing gear bushings, actuator bearings, and high-temperature electrical connectors that operate under extreme atmospheric stresses.
Leveraging copper's natural antimicrobial properties and high-purity composition for advanced imaging systems, surgical tools, and sterile touch surfaces in clinical environments.
Specialized copper-nickel and bronze alloys designed to resist marine biofouling and severe seawater corrosion, ideal for offshore drilling platforms and marine piping systems.
Innovation is the core driver at Sichuan Kepai. Our dedicated R&D team continuously pushes the boundaries of copper metallurgy, developing proprietary formulations that meet the next generation of industrial demands.
Equipped with advanced metallurgical laboratories, scanning electron microscopes (SEM), and mechanical testing systems, our team ensures every alloy meets precise atomic-level specifications.
We operate in strict compliance with global standards. Sichuan Kepai is fully certified under ISO 9001:2015 (Quality Management), ISO 14001:2015 (Environmental Management), and ISO 45001:2018 (Occupational Health and Safety).
We are committed to sustainable manufacturing. By using advanced filtration systems, recycling scrap metal efficiently, and developing lead-free alternative alloys, we minimize our ecological footprint.
Procuring high-performance alloys like C18150 requires a deep understanding of quality indicators to avoid premature component failure. When evaluating a C18150 manufacturer, procurement officers should focus on three critical parameters:
Ensure the manufacturer provides detailed Mill Test Certificates (MTC) showing exact weight percentages of Chromium (0.5-1.5%) and Zirconium (0.05-0.25%). Deviations can severely compromise the precipitation-hardening mechanism, leading to rapid softening under thermal load.
C18150 must exhibit a minimum conductivity of 80% IACS. Lower conductivity indicates high levels of dissolved impurities or improper heat treatment, which will cause excessive resistive heating in welding and electrical applications.
A fully heat-treated C18150 alloy should achieve a hardness of 70-85 HRB. Ultrasonic testing and metallographic analysis should confirm a fine, uniform grain structure free of internal voids, micro-cracks, or macro-segregation.
Get authoritative answers to the most common technical and commercial questions regarding Chromium Zirconium Copper alloys.
Discover our extended range of copper alloys, designed to meet the diverse needs of modern industrial manufacturing and high-tech engineering.
Offering moderate strength combined with high thermal and electrical conductivity, ideal for projection welding dies.
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Leaded beryllium copper alloy providing exceptional strength and spring properties with enhanced machinability.
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Custom-formulated beryllium copper alloys engineered for heavy-duty marine, oil & gas, and aerospace components.
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Premium grade tellurium copper alloy featuring outstanding electrical conductivity and rapid chip formation during machining.
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The industry standard for high-conductivity electrical parts requiring extensive machining and high-speed production.
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Our flagship precipitation-hardened alloy, optimized for resistance welding electrodes and high-stress electrical contacts.
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Engineered for high wear resistance and low friction coefficient, perfect for heavy-load industrial bushings.
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The ultimate free-cutting brass alloy, offering excellent machinability and corrosion resistance for precision components.
View DetailsContact Sichuan Kepai New Materials Co., Ltd. today to request a technical consultation, material samples, or a competitive quote for your custom C18150 copper requirements.
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