Discover our certified range of specialized copper components and sheet materials for heavy-duty applications.
Established in 2017, Sichuan Kepai New Material Co., Ltd. is an industry-leading high-tech enterprise integrating pioneering research and development, smart production, and global B2B distribution of high-performance copper sheets and specialized copper alloys. Covering an expansive 9,000 square meters factory floor alongside 1,000 square meters of high-tech testing laboratories and office spaces, we stand at the absolute forefront of strategic material supply. Our core product portfolio centers on the high-precision fabrication of advanced copper sheets and strategic alloy variants tailored to meet the strict physical and electrical requirements of tomorrow's infrastructure.
We actively produce specialized new materials listed in China's national development frameworks. Our main capabilities focus on tellurium copper, oxygen-free copper, silver copper, and dispersion copper, alongside other high-strength, easy-to-machine alloys.
Through strict independent testing structures, our processing plant implements inline eddy current detection, high-accuracy metallographic assessments, and microcomputer servo testing to guarantee structural reliability.
Understanding metallurgical properties, processing tempers, and industry standard classifications.
In industrial procurement, the term "100 Pure Copper Sheet" typically refers to copper alloys containing at least 99.90% to 99.99% pure elemental copper. Selecting the correct chemistry is vital for system performance:
While pure copper is the standard for high-purity electrical applications, modern demanding environments often require a balance of high electrical conductivity and superior mechanical strength or machinability. Sichuan Kepai solves this issue through advanced micro-alloying:
Why global OEMs choose Sichuan Kepai as their long-term supply partner for high-purity copper materials.
Our facility houses the complete production cycle, from controlled raw material smelting to high-pressure extrusion and final sizing. By managing the supply chain directly in Sichuan, we reduce production losses and maintain strict chemical purity across all batches.
Our quality control labs monitor key physical metrics throughout the production cycle. Every shipment is accompanied by a certified material test report details, indicating chemistry verification, exact IACS conductivity, and tensile properties.
Located within the Sichuan Guanghan Industrial Development Zone, we benefit from convenient logistics links via China's national rail and highway networks. This allows us to supply international markets quickly and efficiently while maintaining competitive pricing.
How raw high-purity cathode copper is converted into precision industrial sheets and custom profiles.
Cathode copper is melted in induction furnaces under gas shielding to control oxygen and trace impurities.
Solidified billets are hot-extruded to form the base plates, ensuring uniform grain structure and density.
Multi-stage precision rolling and cold drawing are used to achieve strict target thickness tolerances.
The sheets are straightened, cut to size, and tested using inline sensors before packaging.
Showcasing the heavy machinery and testing systems used in our manufacturing process.
Analyzing how pure copper sheets and advanced alloys drive efficiency in emerging sectors.
The shift toward vehicle electrification has increased global demand for high-purity copper sheet materials. High-conductivity sheets are key components for busbars, battery packs, power distribution boards, and rapid charging terminals:
High-frequency communications require extremely low signal distortion and loss. Our high-purity oxygen-free copper sheets provide the clean surfaces and low internal resistance needed for RF connectors and coaxial components:
Technical parameters for copper and specialized alloys across various industrial standards.
| Alloy Grade | UNS Standard | Minimum Purity (Cu) | Electrical Conductivity | Tensile Strength (MPa) | Primary Industrial Applications |
|---|---|---|---|---|---|
| Electrolytic Tough Pitch (ETP) | C11000 | 99.90% | ≥100% IACS | 220 - 380 | Electrical busbars, switchgear, power distribution panels |
| Oxygen-Free Copper (OFC) | C10200 | 99.95% | ≥101% IACS | 220 - 350 | Vacuum chambers, high-frequency coax components, electric motors |
| Oxygen-Free Electronic (OFE) | C10100 | 99.99% | ≥101.5% IACS | 220 - 340 | Semiconductor tools, high-purity vacuum seals, particle accelerators |
| Tellurium Copper | C14500 | 99.20% (with Te) | ≥93% IACS | 250 - 390 | CNC machined components, electrical terminals, gas cutting tips |
| Sulfur Copper | C14700 | 99.60% (with S) | ≥95% IACS | 240 - 380 | Automated lathe machined contacts, high-speed connector pins |
| Beryllium Copper | C17200 | Remainder (Be 1.9%) | 22% - 28% IACS | 680 - 1300 | Heavy-duty wear plates, springs, oilfield components, non-sparking tooling |
Every delivery is certified to comply with ISO 9001, RoHS, and strict global industrial standards.
Addressing technical and logistical questions for international procurement teams.
ETP (Electrolytic Tough Pitch) copper contains traces of oxygen, which can cause hydrogen embrittlement if welded at temperatures above 400°C. OFC (Oxygen-Free Copper) is processed to keep oxygen levels below 10ppm, making it suitable for clean welding, vacuum systems, and advanced electronic components.
We operate fully integrated casting and extrusion lines in our Guanghan plant. Standard tests include optical emission spectrometry for chemical purity, eddy current testing for conductivity, and tensile testing to verify mechanical properties for every batch.
Yes. We supply copper sheets in a range of tempers (O, H01, H02, H04) and offer custom slitting, edge shearing, and specific surface protection. Contact our technical team with your dimensional specifications to receive a custom quote.
Our sheets are packed on reinforced wooden pallets with vapor-corrosion-inhibiting (VCI) paper and plastic wrap to protect against sea spray and moisture during transport, ensuring the material arrives in clean condition.
Pure copper is soft and can clog cutting tools. Micro-alloys like tellurium copper (C14500) produce short, brittle chips during machining, which reduces heat buildup, increases cutting tool life, and improves the surface finish of the finished parts.
Yes, our entire product range is certified to comply with current RoHS and REACH regulations, making them suitable for use in electronic assemblies and international markets.
Browse our selection of specialized alloys, tellurium coppers, and high-strength bronzes.
Kepai
