Engineered for extreme conductivity, high wear resistance, and high-frequency electronic stability.
Best Characteristics and application of high performance tellurium copper Manufacturers, Factories
View Product DetailsUnderstanding phase transformations, grain boundaries, micro-alloying mechanisms, and mechanical property tailoring for heavy-duty industrial applications.
Copper-tin alloys (commonly referenced as tin bronze) constitute one of the most versatile structural non-ferrous metal families in modern engineering. When tin (Sn) is introduced into pure copper (Cu), it forms an α-phase solid solution up to approximately 15.8 wt% tin at elevated temperatures. In commercial production, tin concentrations typically range between 0.5% and 11%.
The addition of tin drastically increases the tensile strength, hardness, and work-hardening coefficient of the copper matrix without compromising ductile workability. Tin atoms replace copper atoms in the face-centered cubic (FCC) lattice, creating localized lattice strain fields that effectively retard dislocation movements. This mechanism, known as solute-strengthening, enables custom copper-tin suppliers to engineer materials capable of enduring high mechanical stress, continuous friction, and severe vibrational loads.
In high-grade custom copper tin formulations, phosphorus (P) is introduced during the melting process in small concentrations (typically 0.01% to 0.35%). Phosphorus serves two vital metallurgical roles:
Technical parameter cross-reference for high-performance copper-tin, phosphor bronze, tellurium, and beryllium alloys supplied by Sichuan Kepai New Material Co., Ltd.
| Alloy Grade (UNS / DIN) | Nominal Composition | Tensile Strength (MPa) | Hardness (HRB / HV) | Electrical Conductivity (% IACS) | Machinability Rating | Primary Industrial Scenarios |
|---|---|---|---|---|---|---|
| C54400 (CuSn4Zn4Pb4) | Cu Rest, Sn 4%, Zn 4%, Pb 4% | 440 - 620 | 75 - 95 HRB | 19% IACS | 80% (Free-Machining) | Bushings, bearings, screw machine products, electrical connectors |
| C51100 (CuSn4) | Cu Rest, Sn 4.0%, P 0.2% | 380 - 550 | 65 - 85 HRB | 20% IACS | 20% | Stamped springs, terminal clips, switch components, fuse clips |
| C51900 (CuSn6) | Cu Rest, Sn 6.0%, P 0.2% | 450 - 680 | 120 - 200 HV | 15% IACS | 20% | Heavy-load diaphragm springs, slide bearings, sleeve bushings |
| C14500 (Tellurium Copper) | Cu 99.5%, Te 0.5%, P 0.008% | 250 - 380 | 45 - 80 HRB | 93% - 98% IACS | 85% (High Speed) | Plasma cutting nozzles, EV fast-charge plugs, welding tips |
| C18150 (CuCr1Zr) | Cu Rest, Cr 1.0%, Zr 0.15% | 480 - 600 | 140 - 175 HV | 80% - 85% IACS | 30% | Resistance welding electrodes, spot welding tips, continuous casting molds |
| C17500 / C17510 (Be-Cu) | Cu Rest, Be 0.4%, Co/Ni 2.5% | 680 - 960 | 92 - 100 HRB | 45% - 60% IACS | 40% | High-stress electrical relays, plunger tips, thermal injection molds |
| C11000 (ETP Copper) | Cu 99.90%, O 0.04% | 220 - 380 | 40 - 65 HRB | 100% - 101% IACS | 20% | Power distribution busbars, transformers, grounding systems |
Why leading Fortune 500 tech companies partner with Sichuan Kepai New Material Co., Ltd. for strategic non-ferrous alloy sourcing.
Sichuan Kepai New Material Co., Ltd. is strategically situated in the western sector of the Sichuan Guanghan Industrial Development Zone, directly adjacent to National Highway 108. This prime location delivers seamless transportation corridors connecting our production hubs directly to major international deep-water seaports (Shanghai, Shenzhen) and rail hubs servicing the Belt & Road logistics network. Our streamlined supply chain logistics ensure rapid international dispatch, minimized transit times, and dependable delivery schedules for high-volume custom alloy orders.
Founded as a high-tech enterprise integrating research, continuous casting, precision extrusion, and global marketing, Kepai focuses on strategic emerging materials highlighted in national industrial modernization roadmaps. We specialize in special copper alloys—including tellurium copper, high-conductivity oxygen-free copper, silver copper, dispersion-strengthened copper, and customized phosphor-tin bronzes—engineered specifically to fill structural voids in high-end electronic and electrical supply chains.
How advanced custom copper-tin alloys are empowering key technological transformations across emerging global sectors.
The rapid shift toward 800V high-voltage EV architectures demands interconnects and high-current relays capable of resisting electrical arcing, thermal degradation, and vibrational fatigue. Custom copper-tin and tellurium copper alloys provide superior stress relaxation resistance at working temperatures exceeding 150°C, ensuring reliable power transmission in EV battery management systems (BMS) and DC fast-charging guns.
5G base stations and millimeter-wave telecommunication hardware require connectors with extremely consistent spring back rates and high surface conductivity. Micro-alloyed tin bronzes (such as C51100 and C51900) enable ultra-thin stamping tolerances (down to 0.05mm thickness) without micro-cracking during deep drawing or precision bending processes.
High-power CNC fiber laser cutting torches and plasma arc cutting systems subject nozzles and contact tips to severe thermal shocks and molten metal splatter. Kepai's tellurium-copper and customized tin-bearing alloys maintain dimensional stability under thermal stress while optimizing thermal conductivity to instantly dissipate heat from the cutting orifice.
Rigorous testing protocols guaranteeing total compliance with ASTM, DIN, JIS, and EN standards for worldwide industrial clients.
To comply with stringent international compliance frameworks including RoHS, REACH, and ISO standards, Sichuan Kepai operates an in-house chemical and physical testing laboratory equipped with state-of-the-art diagnostic instruments. Every custom copper-tin melt batch undergoes meticulous multi-stage quality assurance before shipment:
When evaluating global custom copper tin suppliers, procurement officers must consider total cost of ownership (TCO) beyond initial raw metal spot pricing:
Our 9,000 square meter factory utilizes full-spectrum advanced machinery for processing, drawing, and inspecting special copper alloys.
Continuous Smelting
Precision Laying-off
Hot Extrusion Press
Cold Drawing Bench
Precision Straightening
Protective Packaging
Eddy Current Conductance Tester
Chemical Composition Lab
Metallographic Polisher
Universal Testing Machine
LCD Electronic Tester
Precision Hardness Tester
Independent R&D combined with university-industry collaboration ensures our technological achievements reach international advanced standards.
Technological innovation is Kepai's core engine. Guided by senior metallurgical experts, Kepai continuously pushes material boundaries in high-performance tellurium copper, lead copper, and phosphor tin bronzes.
From basic pure copper profiles to customized complex multi-element alloys, our portfolio reduces client production costs while elevating component lifespan across global markets.
Rooted in Sichuan, Kepai radiates products across Europe, North America, Southeast Asia, and the Middle East, maintaining long-term partnerships with multinational engineering leaders.
We advocate an ethos of "integrity, innovation, collaboration, and win-win," constantly striving to deliver unmatched value to customers and industry partners.
High-durability brass, tellurium-copper, sulfur-copper, and beryllium-nickel specialized alloys.
High-Quality OFT oxygen free high conductivity tellurium copper Exporter, Exporters
View Product Details
OEM C26000 Brass (CuZn30) – For Deep Drawing, Stamping & Forming Supplier, Companies
View Product Details
Custom C14700 Sulfur Copper: Make The Production More Efficient Material Factories, Exporter
View Product DetailsExpert technical answers addressing real-world metallurgical, machining, and alloy procurement inquiries.
Partner with Sichuan Kepai New Material Co., Ltd. for engineering expertise, precision casting, and rapid global supply.
Looking ahead, Sichuan Kepai New Materials Co., Ltd. will continue to uphold its original intention, with even greater enthusiasm and determination, to engage in research and application in the field of new materials, contributing to the development of the new copper alloy materials industry in China and globally. We look forward to working hand in hand with friends from all walks of life to create a brilliant future together!
Kepai
