Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of C14500 (UNS C14500)Tellurium Copper Supplier in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
C14500 Tellurium Copper (UNS C14500) is a free-machining copper alloy that contains a small amount of tellurium (0.4–0.7%), which significantly improves machinability while maintaining high electrical and thermal conductivity.
It is mainly used for electrical connectors, switch components, relay parts, CNC precision machined parts, and welding tips, where both conductivity and machining efficiency are required.
Compared with pure copper, C14500 offers much better cutting performance, reduced tool wear, and higher production efficiency, making it a preferred material for industrial and electrical manufacturing applications.
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C14500 Tellurium Copper (UNS C14500) High Performance Copper Alloy
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
| Item | Specification |
|---|---|
| Alloy Grade | C14500 / UNS C14500 |
| Standard | ASTM B301 / ASTM B124 |
| Copper Content | ≥ 99.5% |
| Tellurium Content | 0.4 – 0.7% |
| Electrical Conductivity | ~90% IACS |
| Machinability | ~85% |
| Density | 8.9 g/cm³ |
| Hardness | 80–110 HV |
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
CNC machined precision parts
Welding and soldering tips
Automotive electrical systems
Bus bars and conductive components
Transformer and power distribution parts
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
PROCESSING ADVANTAGE
C14500 Tellurium Copper is specifically engineered for high-speed machining applications, producing short chips that improve CNC efficiency and reduce tool wear, making it ideal for mass production precision components.
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.
Q6: What is C14500 Tellurium Copper used for?
A6：It is widely used in electrical connectors, switches, CNC machined parts, and conductive components.
Q7: What makes C14500 copper special?
A7：It combines high conductivity with excellent machinability due to tellurium addition.
Q8: Is C14500 suitable for CNC machining?
A8：Yes, it is one of the best free-machining copper alloys.
Q9: What standard does C14500 follow?
A9：It follows ASTM B301 / UNS C14500 standards.
Q10: Can it be customized?
A10：Yes, rods, plates, sheets, and machined parts are all available.
WHY CHOOSE US
✔ Factory direct copper alloy supplier
✔ Stable ASTM B301 certified material
✔ Custom size and precision cutting
✔ Fast global export delivery
✔ Full Mill Test Certificate (MTC)
✔ Strict quality inspection system
INSPECTION & QUALITY CONTROL
Each batch of C14500 copper is tested for:
Chemical composition verification
Electrical conductivity test
Machinability performance check
Dimensional accuracy inspection
Third-party inspection (SGS / BV optional)
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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