C14500 Tellurium Copper, also known as TeCu or CDA 145, is a high-performance copper alloy that combines excellent electrical and thermal conductivity with superior machinability. Available in a wide range of specifications and forms-including C14500 copper rods, bars, plates, sheets, and custom machined parts-this material is ideal for applications requiring precision machining, high strength, and corrosion resistance. We supply C14500 Tellurium Copper in standard ASTM B301 / UNS C14500 specifications, ensuring consistent quality for electrical components, connectors, terminals, and precision parts.
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High Quality
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Advanced Equipment
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Professional Team
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Custom Service
Products Description
C14500 Tellurium Copper (TeCu), also known as CDA 145 or Copper Telluride Alloy, is a free-machining copper alloy that offers outstanding electrical and thermal conductivity while maintaining excellent machinability and corrosion resistance.
The addition of tellurium (0.4–0.7%) improves cutting performance and tool life without significantly affecting copper's conductivity, making it ideal for high-speed automatic machining and electrical applications.
We supply C14500 Tellurium Copper in multiple forms, including:
Rods / Bars / Plates / Sheets / Strips / Wires / Custom Machined Parts
Standard specifications: ASTM B301 / UNS C14500 / CDA 145
Available in both metric and inch sizes, with custom cut-to-length service
Chemical Composition (Typical)
| Element | Content (%) |
| Copper (Cu) | 99.5 min |
| Tellurium (Te) | 0.4 – 0.7 |
| Others (total) | ≤ 0.1 |
Mechanical Properties
| Property | Value (Typical) |
| Tensile Strength | 340 – 400 MPa |
| Elongation | 45 – 55% |
| Hardness (HV) | 80 – 110 |
| Electrical Conductivity | 90% IACS (approx.) |
| Density | 8.9 g/cm³ |
Applications
C14500 Tellurium Copper is widely used in industries such as electrical, automotive, mechanical, and precision tooling.
Typical applications include:
Electrical connectors and terminals
Switch and relay components
Bus bars and contact tips
Transformer parts and terminals
Welding tips and electrodes
Machined parts requiring conductivity and strength
Available Sizes & Forms
| Product Type | Diameter / Thickness Range | Length |
|---|---|---|
| Rods / Bars | Ø 3 mm – Ø 200 mm | Up to 3000 mm |
| Plates / Sheets | 1 mm – 100 mm | Custom sizes available |
| Strips | 0.1 mm – 3 mm | Coil or cut length |
| Wires | 0.5 mm – 10 mm | Continuous coils |
Custom dimensions and tolerances are available upon request.
Packaging & Delivery
Standard export seaworthy packaging
Plastic wrapping + wooden cases / pallets
Custom labeling & OEM accepted
Fast delivery within 7–15 working days (depending on order quantity)
Quality Assurance
All C14500 Tellurium Copper materials are sourced from certified mills and tested according to ASTM B301 standards.
Each batch includes:
Material test certificate (MTC)
Chemical composition analysis
Mechanical property report
Dimensional inspection report
FAQ – Frequently Asked Questions
Q1: What is the difference between C14500 and pure copper (C11000)?
A1: C14500 contains a small amount of tellurium, improving machinability while maintaining ~90% conductivity of pure copper. It's preferred for parts requiring both precision machining and conductivity.
Q2: Is C14500 suitable for welding or soldering?
A2: Yes. C14500 can be brazed and soldered easily, but it is not recommended for fusion welding.
Q3: Can I order custom sizes or machined parts?
A3: Absolutely. We offer custom machining services based on drawings or samples, including turning, milling, drilling, and surface finishing.
Q4: What are the international equivalents of C14500?
A4:
UNS C14500
ASTM B301
CDA 145
EN CW118C
Q5: How can I get a quotation?
A5: Simply send your required dimensions, quantity, and delivery location, and we will provide a competitive quote within 24 hours.
contact us
📧 Email: office@dongmjd.com
📞 Phone / WhatsApp: +86 15769214734
We are a professional supplier of C14500 Tellurium Copper rods, bars, plates, and custom parts with competitive prices and fast delivery worldwide.
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