Established in May 2017, Sichuan Kepai New Materials Co., Ltd. has established itself as an innovative high-tech manufacturer specializing in the research, development, processing, and global supply of high-conductivity, high-strength free-cutting tellurium copper and an extensive portfolio of custom copper alloys.
Our production capabilities focus heavily on solving critical conductive bottlenecks in high-speed rail transmission, heavy-load mechanical assemblies, aerospace connectivity, and EV charging interfaces. We process high-purity raw copper materials with custom alloying agents using gas-shielded induction furnaces to yield unparalleled mechanical integrity, outstanding structural homogeneity, and predictable machining results.
Year of Establishment
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Global Clients Served
Intellectual Patents
Copper alloys are not mere commodities; they represent the structural backbone of mechanical, electrical, thermal, and marine engineering. Understanding phase transformations and chemical optimizations defines performance levels.
In thermal spray deposition and plasma arc welding systems, nozzle and electrode components are continuously exposed to intense electrical arcs exceeding 10,000°C. Pure copper suffers rapid erosion, while standard brass lacks thermal tolerance. Using oxygen-free high-conductivity tellurium copper ensures long-lasting nozzle lifetimes and crisp gas-flow control, reducing downtime in heavy industrial setups.
Modern Electric Vehicles (EVs) utilize rapid liquid-cooled charging couplers that pass up to 500 amps of current. Standard copper terminals build up dangerous resistive heat. High-purity C14500 and C19160 tellurium/nickel-silicon copper pins minimize resistance, prevent terminal deformation, and guarantee hundreds of thousands of connection cycles under various outdoor climates.
Seawater environments call for high resistance to biological fouling and stress corrosion cracking. Our beryllium-copper foils (C17200) and nickel-aluminum-bronzes provide the structural elasticity and anti-spark characteristics required in aircraft landing gear bushings, subsea sensor housings, oil field instrumentation, and deep-sea drilling assemblies.
| Alloy Grade | UNS Number | Electrical Cond. (% IACS) | Tensile Strength (MPa) | Machinability Rating | Primary Industrial Applications |
|---|---|---|---|---|---|
| Tellurium Copper | C14500 | 93% – 98% | 250 – 380 | 85% (Free-Cutting) | EV terminals, plasma nozzles, high-current connectors |
| Beryllium Copper | C17200 | 15% – 25% | 1100 – 1380 | 20% (Aged condition) | Heavy-duty springs, aerospace bushings, non-sparking tools |
| Sulfur Copper | C14700 | 90% – 95% | 240 – 340 | 85% (Optimal chips) | Automotive electronic components, electrical switchgear |
| Phosphor Bronze | C51100 | 15% – 20% | 350 – 620 | 20% | Bellows, diaphragm plates, spring clips, connectors |
| Chromium Zirconium | C18150 | 75% – 85% | 450 – 550 | 30% | Resistance welding electrodes, mold backing plates |
As an internationally recognized exporter, Sichuan Kepai New Materials Co., Ltd. has established robust shipping routes and custom clearing protocols for manufacturing centers across the Americas, the European Union, South Korea, Japan, and Southeast Asia.
Whether catering to precision aerospace component manufacturers in Western Europe or heavy electrical switchgear assemblers in North America, we verify that every billet, rod, wire, and extruded profile is securely packed and accompanied by complete chemical analysis reports, batch test results, and compliance documentation.
Fully integrated logistics, bonded warehouse options, and clear import duty assistance.
Same-week dispatch for standard stock items to Korea, Japan, and ASEAN hubs.
Deploying the right copper alloy makes the difference between product success and structural failure. We supply customized raw formats optimized for specific engineering demands.
High-conductivity tellurium copper alloys supply the structural sensitivity, reliable signal feed, and magnetic insulation required for advanced MRI machines, surgical tools, and precision measurement devices.
We provide raw alloys optimized for high-speed stamping, drawing, and machining of high-voltage charging pin terminals, battery busbars, and complex power electronic control housings.
Beryllium copper and high-strength tellurium alloys are vital for critical aerospace connectors, aircraft alternator components, hydraulic bushings, and structural avionics packaging.
Superior resistance to biofouling, corrosion, and wear makes our copper-nickel and specialized bronze alloys the standard choice for offshore oil rigs, subsea pipe systems, and marine propellers.
High-purity tellurium copper and chromium zirconium copper are machined into plasma cutting electrodes, electrode holders, gas diffusers, and spot-welding tips that handle extreme thermal load.
As smart grids expand, specialized copper alloys facilitate efficient power transmission, solar inverter connections, and high-capacity battery cell link bars.
We maintain a strong commitment to green metallurgy, high precision R&D, and sustainable development processes.
Our in-house research laboratory is staffed by metallurgists and process engineers who continuously test recrystallization temperatures, grain refiners, and stress relief annealing routines. This allows us to customize physical properties to meet demanding customer design blueprints.
To overcome the limitations of standard tellurium copper, we developed an oxygen-free tellurium copper alloy with very low oxygen content. This material avoids hydrogen embrittlement during brazing and welding, maintaining a highly stable and conductive structure.
Our facility actively works to reduce its environmental footprint by upgrading filtration networks and recycling scrap metals. We manufacture lead-free and low-lead alternative alloys to help clients comply with strict RoHS, REACH, and other environmental regulations.
Over the next five years, Kepai is scaling up production of ultra-fine grain copper alloys and sub-micron dispersion-strengthened materials. Our engineering focus includes optimizing Cu-Cr-Zr, Cu-Ni-Si, and high-purity tellurium copper alloys to support next-generation ultra-fast charging stations, aerospace micro-connectors, and high-frequency microwave communications.
Below, our technical team answers common questions regarding engineering properties, processing guidelines, and application choices.
Are you looking to resolve conductivity bottlenecks, improve tool life, or source high-purity custom copper alloys? Connect with our technical team today.
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