High-performance custom copper solutions engineered to rigorous international standards and optimized for complex industrial applications.
C1100, scientifically designated as Electrolytic Tough Pitch (ETP) Copper (UNS C11000), stands as the cornerstone for components demanding maximum electrical and thermal transfer efficiency. Characterized by a minimum copper content of 99.90%, C11000 possesses an electrical conductivity rating of at least 100% IACS (International Annealed Copper Standard), and frequently achieves 101% IACS in optimized metallurgical conditions.
As a highly sought-after material, C1100 ETP exhibits an optimal balance of electrical conductivity, ductility, and malleability. It is highly resistant to atmospheric corrosion and shows excellent cold and hot workability. Our custom engineering allows client enterprises to define specific mechanical tempers (ranging from soft-annealed O60 to hard-rolled H04) and precise tolerances to match automatic stamping, CNC machining, and deep-drawing processes perfectly.
Established in 2017, Sichuan Kepai New Materials Co., Ltd. is a modern, high-tech enterprise dedicated to the R&D, processing, and exportation of high-performance copper alloys. Operating from a highly efficient 9,000-square-meter facility with an advanced 1,000-square-meter collaborative workspace, we focus on the frontier of strategic new materials.
Our focus centers on high-conductivity, easy-to-machine, and high-strength alloys. We supply essential components for next-generation electric vehicles (EVs), 5G telecommunication networks, heavy electrical grids, and automated industrial machinery. Conveniently located adjacent to National Highway 108 in Sichuan Guanghan Industrial Development Zone, we offer rapid logistics to major global shipping hubs.
The shift toward clean energy and high-frequency communication is transforming the global demand for custom C1100 copper alloys.
The automotive industry's pivot toward electric drivetrains relies on copper components. C1100 ETP copper is the material of choice for high-voltage busbars, distribution blocks, traction motor coils, and fast-charging interfaces. Its thermal stability guarantees reliable operation under high current densities, preventing thermal runaway and maximizing vehicle efficiency.
Next-generation communication infrastructure requires low-loss signal propagation. The uniform microstructure of our custom-processed C1100 plates and foils minimizes skin-effect losses in RF connectors, coaxial cables, and high-frequency waveguides. This ensures stable data transmission speeds and reliable signal integrity.
In high-power fiber laser cutting heads, thermal management around the nozzle base is critical. C1100 copper provides the rapid thermal dissipation required to prevent slag adhesion and nozzle deformation, maintaining cutting accuracy and extending the lifespan of optical components.
With the growth of utility-scale solar and wind farms, energy storage systems require robust switchgear. Custom C1100 profiles are used in high-voltage circuit breakers and switchgear assemblies. Their high conductivity minimizes resistance and heat generation during peak loads, ensuring grid stability.
A detailed look at our quality control processes and modern equipment used to manufacture high-conductivity C1100 alloys.
Our manufacturing workflow is designed to maintain high purity and structural uniformity. During the smelting phase, we monitor oxygen levels to prevent defects in the copper matrix. The subsequent extrusion and drawing phases are optimized to eliminate internal stresses and achieve tight dimensional tolerances.
Each production batch undergoes testing in our laboratories. We use eddy current conductance instruments to verify electrical standards, and metallographic microscopes to evaluate grain-structure characteristics. This testing ensures our copper meets performance requirements for critical applications, including laser cutting components and new energy vehicle relays.
Sichuan Kepai maintains a reliable supply chain by sourcing premium raw materials and leveraging proximity to regional transport networks. Our location in western China provides access to energy resources and raw copper cathodes, allowing us to manage production costs and pass those savings to clients.
Our integrated manufacturing line houses casting, drawing, machining, and testing in a single location. This reduces logistical overhead and enables short lead times. We offer flexible scheduling to accommodate custom or large-scale orders, helping our international partners minimize inventory risks.
Additionally, we work with global logistics networks to provide door-to-door sea, rail, and air freight options. This ensures safe and prompt delivery of C1100 copper plates, rods, and custom profiles to manufacturing destinations worldwide.
Review the chemical and mechanical properties of our main copper grades to select the optimal material for your application.
| Alloy Grade | UNS No. / Equivalent | Chemical Composition | Elec. Conductivity | Tensile Strength (MPa) | Key Applications |
|---|---|---|---|---|---|
| C1100 (ETP Copper) | UNS C11000 / Cu-ETP | Cu ≥ 99.90%, O ~ 0.04% | ≥ 100% IACS | 220 - 380 | Busbars, switchgears, electrical connections, 5G electronics |
| Oxygen-Free Copper | UNS C10200 / Cu-OF | Cu ≥ 99.95%, O ≤ 0.001% | ≥ 100% IACS | 220 - 340 | High-vacuum devices, audio conductors, hydrogen environment bonding |
| Tellurium Copper | UNS C14500 / Cu-Te | Cu ~ 99.5%, Te 0.4 - 0.7% | ≥ 93% IACS | 250 - 360 | Laser cutting nozzles, plasma torches, EV relay contacts |
| Chromium Zirconium Copper | UNS C18150 / CuCr1Zr | Cr 0.5 - 1.2%, Zr 0.03 - 0.3% | ≥ 80% IACS | 420 - 540 | Resistance welding electrodes, high-stress continuous casting molds |
| Beryllium Copper | UNS C17200 / CuBe2 | Be 1.8 - 2.0%, Co+Ni ≥ 0.2% | 22 - 38% IACS | 1100 - 1380 | High-strength springs, non-sparking safety tools, aerospace bushings |
We maintain rigorous quality standards throughout our manufacturing processes. Sichuan Kepai is ISO 9001:2015 certified, establishing high standards for operational traceablity, raw material validation, and production control.
Our custom C1100 copper exports are RoHS and REACH compliant, meeting global environmental regulations. We provide Mill Test Certifications (MTC) with each shipment, documenting chemical composition, electrical conductivity, and mechanical performance parameters.
Find answers to technical questions about custom C1100 copper procurement, design specifications, and logistics.
C1100 (Electrolytic Tough Pitch) copper contains a small amount of oxygen (typically 0.02% to 0.04% in the form of cuprous oxide), which helps scavenge impurities to maintain electrical conductivity of >100% IACS. C10200 (Oxygen-Free) copper is smelted under a vacuum or reducing atmosphere to limit oxygen to <0.001%. While both share similar electrical and thermal conductivity profiles, C10200 is preferred for high-vacuum electronic components and applications involving high-temperature brazing or welding, as it prevents hydrogen embrittlement. For standard electrical contacts, busbars, and distribution systems, C1100 provides a balance of cost and performance.
Yes. C1100 contains trace oxygen, which can react with hydrogen at temperatures above 370°C (700°F) to form steam. This steam forms high-pressure pockets along grain boundaries, resulting in micro-cracks and structural failure (hydrogen embrittlement). To avoid this, C1100 components are typically joined using mechanical fastening (bolting), low-temperature soldering, or brazing techniques with inert shielding gases. If high-temperature welding or brazing in a hydrogen-rich atmosphere is required, C10200 or C10100 Oxygen-Free copper is recommended.
Sichuan Kepai manufactures C1100 in various formats, including high-purity rods, sheets, plates, foils, and specialized profiles. We support dimensional tolerances down to ±0.02 mm, depending on the thickness and geometry. We also customize tempers from fully annealed (O60) to extra hard (H04) to match stamping, forming, or CNC machining requirements. Surface treatments, such as tin, nickel, or silver plating, are also available to improve oxidation resistance.
We implement a quality management system certified under ISO 9001:2015. Every production batch is tested for chemical composition via spark emission spectrometry and tested for electrical conductivity using eddy current conductance meters. Mill Test Certificates (MTC) detailing composition, hardness, tensile strength, and conductivity are provided with every shipment. Our materials comply with RoHS and REACH regulations, and are inspected to ensure they meet ASTM, EN, and JIS standards.
Standard lead times range from 15 to 30 days, depending on order volume and customization requirements. To prevent oxidation and mechanical damage during shipping, materials are wrapped in moisture-resistant vapor barrier paper, secured with edge protectors, and packed in reinforced, IPPC-compliant wooden crates. We manage shipping through major ports (such as Shanghai and Shenzhen) to ensure prompt delivery to our global clients.
Contact our technical engineering team for inquiries regarding material grades, custom profile designs, production capacities, or localized compliance standards.
We offer a wide selection of copper formulations, from high-tensile brasses to conductive bronzes, designed for demanding industrial environments.
Kepai
