Electrolytic Tough Pitch Copper (ETP / C11000)
Reliable Electrical Copper Solutions by Huaxiao-Alloy
1. What Is Electrolytic Tough Pitch Copper?
Electrolytic Tough Pitch Copper (ETP Copper) is the most commonly used copper grade for industrial electrical applications. Unlike Oxygen Free Copper, ETP contains a controlled level of oxygen (typically 0.02–0.04%), which improves hot-working properties and machinability while still providing excellent electrical conductivity.
At Huaxiao-Alloy, we treat ETP Copper as a comprehensive electrical and thermal solution, not just raw copper.
Our expertise ensures that busbars, wiring, tubes, and other components made from ETP copper meet high conductivity, formability, and reliability standards for industrial projects worldwide.
2. ETP Copper Grades & UNS Numbers
| Grade | UNS No. | Common Name |
|---|---|---|
| C11000 | UNS C11000 | Electrolytic Tough Pitch Copper (ETP) |
| C11100 | UNS C11100 | ETP Copper with enhanced purity |
| C11300 | UNS C11300 | ETP Copper, higher conductivity |
Professional Tip from Huaxiao-Alloy:
C11000 is ideal for standard electrical applications and wiring.
C11100 / C11300 are used where slightly higher purity or conductivity is required.
3. Chemical Composition
| Element | C11000 (%) | C11100 (%) | C11300 (%) |
|---|---|---|---|
| Copper (Cu) | ≥ 99.90 | ≥ 99.90 | ≥ 99.90 |
| Oxygen (O) | 0.02–0.04 | 0.02–0.04 | 0.02–0.04 |
| Phosphorus (P) | ≤ 0.04 | ≤ 0.04 | ≤ 0.04 |
| Other Elements | ≤ 0.05 | ≤ 0.05 | ≤ 0.05 |
Oxygen improves hot working and machinability while keeping conductivity high (~100% IACS).
4. Mechanical & Physical Properties
| Property | Typical Value |
|---|---|
| Electrical Conductivity | ≥ 97–101% IACS |
| Thermal Conductivity | ~390 W/m·K |
| Density | 8.94 g/cm³ |
| Tensile Strength | 210–250 MPa |
| Elongation | ≥ 30% |
Huaxiao-Alloy Advantage:
We provide custom rolling, drawing, and heat treatment to optimize these properties for your project requirements.
5. Key Advantages of ETP Copper
Excellent electrical and thermal conductivity
Strong mechanical strength for industrial applications
High hot workability for busbars, strips, and tubes
Cost-effective solution for large-scale electrical installations
Compatible with standard soldering, welding, and brazing
6. Typical Applications
Huaxiao-Alloy supplies ETP Copper for:
Electrical wiring & cable conductors
Busbars and connectors
Transformer windings
Switchgear components
Tubes and heat exchangers
Power distribution panels
By choosing Huaxiao-Alloy, you get reliable copper material and engineering guidance for all your industrial projects.
7. Available Forms & Supply Capabilities
Sheets & Plates
Bars & Rods
Tubes & Pipes
Wires & Strips
Standards Supported: ASTM B187 / ASTM B152 / ASTM B170
UNS C11000 / C11100 / C11300
EN CW004A / CW008A
Huaxiao-Alloy Services:
Custom dimensions & tolerances
Precision machining and cutting
Global export-ready packaging
8. ETP Copper vs OFHC Copper
| Property | ETP Copper | Oxygen Free Copper (OFHC) |
|---|---|---|
| Oxygen Content | 0.02–0.04% | ≤ 0.001% |
| Electrical Conductivity | Slightly lower | Higher |
| Mechanical Workability | High | Moderate |
| Best Use | General industrial electrical | High-end electronics, vacuum |
Engineering Insight:
ETP is cost-efficient for large-scale industrial use, while OFHC is reserved for precision electronics and vacuum applications.
9. Standards & Quality Assurance
ASTM B152 / B187 / B170
UNS C11000 / C11100 / C11300
ISO / EN compliance
ROHS & REACH ready
Huaxiao-Alloy guarantees full traceability and compliance, supporting project-critical supply chains.
Yes, it has excellent machinability and welding performance, suitable for standard electrical components.
Absolutely. Huaxiao-Alloy offers tailored sizes, shapes, and processing.
ETP copper has slightly lower conductivity but is highly cost-effective for industrial electrical applications.
11. Why Choose Huaxiao-Alloy?
One-stop metal solutions for all copper grades
Expert guidance in material selection, processing, and export compliance
Stable, large-scale supply chain for industrial projects
Competitive pricing without compromising quality
Engineering-oriented solutions, not just raw material trading
We don’t just supply copper — we solve your material challenges.
12. Get a Quote – Work with a Professional Copper Supplier
📧 Email: [email protected]
📱 WhatsApp: +1 (579) 300-2733
Huaxiao-Alloy delivers reliable ETP Copper solutions for global industrial applications.
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