Web Menu

Product Search

Language

Share

Zhejiang Jingliang Copper-Tube Products Co., Ltd

Wholesale Tellurium Copper (C14500)

Tellurium Copper (C14500)

-- Steady & Reliable Manufacturer --

The Machinist's Choice for High-Conductivity Parts

Tellurium Copper, designated as C14500, is the ultimate "Free-Machining" copper alloy. Standard high-purity copper (like C11000) is notoriously difficult to machine; it is "gummy" and tends to wrap around drill bits and create long, stringy chips that can ruin expensive CNC tooling. At Zhejiang Jingliang, we solve this by adding a small, precisely controlled amount of tellurium (about 0.5%). This addition creates tiny inclusions in the copper matrix that act as "chip breakers," allowing the metal to be machined at speeds similar to free-cutting brass. Most importantly, unlike leaded-copper alloys, Tellurium Copper maintains an incredibly high electrical conductivity (≥93% IACS) and thermal conductivity. This makes it the premier material for complex electrical components that require both high precision and high current-carrying capacity.

Our C14500 Tellurium Copper is produced using a specialized casting process that ensures the tellurium is evenly distributed throughout the alloy. This uniformity is critical; if the tellurium "clumps," the material will have inconsistent machining properties and weak spots. We provide this material in rods, hex bars, and plates, all with a "Bright Finish" that is ready for the lathe. In addition to its machinability, C14500 offers excellent resistance to "Hydrogen Embrittlement," making it safer for high-temperature brazing and welding than standard ETP copper. For manufacturers of plasma torch nozzles, electrical connectors, and semiconductor components, Jingliang’s Tellurium Copper provides the "Gold Standard" of productivity and electrical performance.

Machinability & Conductivity Specs

PropertyC14500 Specification
Tellurium Content0.40% - 0.70%
Machinability Rating85% (compared to 20% for ETP copper)
Electrical Conductivity93% - 98% IACS
Thermal Conductivity355 W/(m·K)
Tensile Strength250 - 340 MPa
Hardness (Rockwell)F65 - F90 (Temper dependent)
Elongation≥ 10% (Hard) to 30% (Soft)
Copper Purity (inc. Te)99.9% Minimum
Hydrogen EmbrittlementResistant (Passes ASTM B577)
StandardsASTM B301 / SAE J463

Plasma Cutting, Electrical Connectors, and EV Components

Tellurium Copper is the industry-standard material for "Plasma Cutting Nozzles and Welding Tips" because it can withstand the intense heat while being easy to machine into complex internal geometries. In the "Electric Vehicle (EV)" sector, it is used for "High-Current Battery Connectors" and charging plug pins where low resistance is vital for fast charging. It is extensively used in "Power Distribution" for switchgear components, busbar connectors, and transformer terminals. In the "Semiconductor" industry, C14500 is used for "Lead Frames" and heat sinks. It is also favored by "Audio Engineers" for high-end connectors and speaker terminals due to its purity and conductivity. Additionally, it is used in "Gas Cutting Equipment" where high-precision orifices must be drilled into a heat-resistant copper base.

High Productivity and Superior Surface Finish

The "85% Machinability Rating" is the standout advantage, allowing for "High-Speed CNC Production" that reduces labor costs and "Extends Tool Life" by up to 4 times compared to pure copper. Despite its ease of cutting, it offers "Near-Pure Electrical Conductivity," ensuring that your components do not overheat under high electrical loads. Our C14500 provides "Excellent Surface Finish" directly off the lathe, often "Eliminating the Need for Secondary Polishing." It is "Highly Resistant to Atmospheric Corrosion," ensuring long-term reliability in electrical cabinets. The alloy’s "Resistance to Hydrogen Embrittlement" allows for "Worry-Free Brazing," making it easier to integrate into larger assemblies. Finally, the "Tight Dimensional Stability" of our rods ensures that even the most complex, micro-sized electrical pins maintain their tolerances through high-volume production runs.

Precision Packaging for Machining Rods

C14500 rods are high-value precision materials. We pack them in "Hexagonal Bundles" wrapped in moisture-proof VCI paper and secured in wooden crates. Payment is 30% T/T and 70% L/C. We ship from Ningbo or Shanghai. Every batch comes with a "Chemical Analysis and Conductivity Report" to ensure the material meets the IACS requirements of your project. For high-volume CNC shops, we offer "Chamfered Ends" on the rods to facilitate easier loading into automatic bar feeders.

  • Q: Is Tellurium Copper RoHS compliant?
  • A: Yes, unlike some leaded-copper alloys, C14500 Tellurium Copper is fully RoHS and REACH compliant, making it safe for global electronic manufacturing.
  • Q: Can I weld Tellurium Copper?
  • A: Yes, it has excellent weldability and is much easier to work with than ETP copper during joining processes due to its resistance to gas porosity.
ABOUT US
30+YEARS OF
EXPERIENCE
About Us

A Reliable Partner of the Copper Tube Industry

Zhejiang Jingliang Copper-Tube Products Co., Ltd is China Tellurium Copper (C14500) and Tellurium Copper (C14500) Factory, which established in 1994, has been deeply involved in the copper tube industry for over three decades. The company primarily produce various specifications of products such as copper tubes, brass tubes, copper square tubes, fin copper tubes, copper capillary tubes, condenser copper tubes, copper evaporator tubes, and conductive rods, which are of quality and have earned the trust and acclaim of customers both domestically and internationally.

Wide Applications:

These products are widely used in various fields including air conditioning, refrigeration, heat exchange, sanitary ware, automotive, machinery, electric furnaces, and chemical industries.

Convenient Transportation:

Strategically located in Tangpu Town, renowned as the “home of copper tubes” in East China. Our company enjoys a prime location, adjacent to the Shangsan Expressway and National Highway 104, and is conveniently situated just over 70 kilometers from Hangzhou and Ningbo, ensuring easy accessibility and a business position.

Strong Financial Resources:

With its strong financial resources and advanced copper tube processing technology, our company holds an advantageous position in market share, brand value, technological content, and product quality, becoming a preferred supplier for many listed groups.

Large Scale Production:

The company occupies an area of over 20,000 square meters, with a construction area of 12,800 square meters. In 2022, our annual production exceeded 7,500 tons, with a value output of up to 450 million yuan, demonstrating our strong production capacity and market competitiveness.

Comprehensive Industry Chain:

Jingliang has now developed into a complete industrial chain integrating smelting, extrusion, drawing, precision rolling, and annealing. It has been awarded multiple honors, including "Top Ten Copper Tube Enterprises" and "Leading Taxpayer in the Copper Tube Industry".

Smart Manufacturing:

Jingliang Copper-Tube Products will better integrate the concept of factory construction into its corporate development strategy, insist on refining technology and polishing products more finely, and the future of "intelligent manufacturing".

Genuine Cooperation:

Zhejiang Jingliang Copper-Tube Products Co.,Ltd warmly welcomes friends from all walks of life to visit and offer guidance. We look forward to joining hands with you to create a brilliant future together.

Message Feedback

  • Copper Capillary for Thermostats
  • Copper Nickel Alloy Tubes
  • Copper Fittings & Connectors
  • Corrosion Resistant Copper
    • X Facebook
    Products News