What is C11000 copper?
C11000 electrolytic tough pitch copper, or ETP copper, is produced by the direct conversion of selected refined cathodes and castings under carefully controlled conditions. C11000 electrolytic copper has inherent fabrication qualities that readily allow it to be bent, soldered, drilled, welded, and formed to fit almost any design specification.
ETP Copper is the most commonly used copper, since it's universal for electrical applications. C11000 has a minimum conductivity rating of 100% and is required to be 99.9% pure.
Equivalent Grade Chart Of C11000 Copper Tubing
| Designation System | Code | Standard Reference |
|---|---|---|
| UNS Number | C11000 | ASTM B124/B152 |
| European Standard | CW004A | EN 1412 |
| Japanese Standard | C1100 | JIS H3100 |
| ISO Designation | Cu-ETP | ISO 1634-1 |
Chemical Composition (wt%)
| Element | Minimum | Maximum | Typical | Notes |
|---|---|---|---|---|
| Copper + Silver | 99.90 | - | 99.95 | Primary constituent |
| Oxygen | 0.015 | 0.040 | 0.025 | 150-400 ppm as Cu₂O |
| Silver | - | 0.030 | 0.015 | Counted in copper total |
| Lead | - | 0.005 | 0.002 | Impurity control |
| Iron | - | 0.005 | 0.002 | Impurity control |
| Tin | - | 0.002 | <0.001 | Impurity control |
| Zinc | - | 0.002 | <0.001 | Impurity control |
| Total Other Impurities | - | 0.050 | 0.020 | Excluding oxygen |
Physical Properties at 20°C
| Property | Metric Value | Imperial Value | Test Method |
|---|---|---|---|
| Electrical Properties | |||
| Electrical Conductivity | ≥58 MS/m (100% IACS) | ≥100% IACS | ASTM E1004 |
| Electrical Resistivity | 1.724 µΩ·cm | 6.79 µΩ·in | ASTM B193 |
| Temperature Coefficient | 0.00393 /°C | 0.00218 /°F | - |
| Thermal Properties | |||
| Thermal Conductivity | 390 W/m·K | 270 BTU·ft/(h·ft²·°F) | ASTM E1461 |
| Specific Heat Capacity | 0.385 J/g·K | 0.092 BTU/(lb·°F) | - |
| Thermal Expansion (20-300°C) | 16.5 × 10⁻⁶ /°C | 9.2 × 10⁻⁶ /°F | ASTM E228 |
| Physical Constants | |||
| Density | 8.94 g/cm³ | 0.323 lb/in³ | - |
| Melting Point | 1,083°C | 1,981°F | - |
| Elastic Modulus | 117 GPa | 17,000 ksi | ASTM E111 |
| Poisson's Ratio | 0.34 | 0.34 | - |
Mechanical Properties
Annealed Condition (O60/O61)
| Property | Value Range | Typical | Test Standard |
|---|---|---|---|
| Ultimate Tensile Strength | 210-250 MPa | 230 MPa | ASTM E8/E8M |
| 0.2% Yield Strength | 70-100 MPa | 85 MPa | ASTM E8/E8M |
| Elongation (50mm gauge) | 45-55% | 50% | ASTM E8/E8M |
| Rockwell Hardness | 45-65 HRB | 55 HRB | ASTM E18 |
FAQ
What grade of copper is C1100?
C1100 is the Japanese Industrial Standard (JIS) designation, which is the direct equivalent of the U.S. C11000. Therefore, C1100 is the JIS grade for Electrolytic Tough Pitch copper. The specifications are essentially identical to C11000, with the same high purity, conductivity, and properties.
What is the purity of C11000 copper?
C11000 copper has a minimum copper purity of 99.90%. The primary impurity is a controlled amount of oxygen (typically 0.02% to 0.04%), which is intentionally present to improve castability and workability. The remaining trace elements are strictly limited by specification.
What is the copper equivalent of C11000?
C11000 has direct international equivalents. Key equivalents include: CW003A / CW004A (European EN standard), C1100 (Japanese JIS standard), and Cu-ETP (common ISO designation). All these represent Electrolytic Tough Pitch copper with virtually identical composition and properties.
Is C11000 copper the same as C110?
Yes, they are the same. "C110" is a shortened, colloquial form of the full UNS designation "C11000." In technical documents and procurement, the full "C11000" is preferred, but in everyday industry conversation, "C110" is universally understood to refer to this material.
What is the difference between C11000 and C10100 copper?
The key difference is oxygen content and purity. C11000 (ETP) contains 0.02-0.04% oxygen and is 99.90% pure. C10100 (OFE - Oxygen-Free Electronic) is 99.99% pure copper and contains virtually no oxygen (<0.0005%). This makes C10100 essential for high-vacuum electronics and applications where hydrogen embrittlement is a risk, while C11000 is the standard for most electrical and thermal uses.
Product Forms We Can Provide
| Product Category | Material Standards | Common Alloys | Key Specifications (Can be Customized) |
|---|---|---|---|
| Copper Tubes | ASTM B75, B88, B280,B111; EN 12449, 12451; DIN EN 12735; JIS H3300 | C10100 (OFE), C11000 (ETP), C12200 (DHP), C23000, C70600,C71500 | OD: 3mm - 300mm Wall Thickness: 0.5mm - 20mm Temper: Soft (O), Half-Hard (H50), Hard (H80) Form: Straight Lengths, Coils, U-Bends |
| Copper Sheets / Plates | ASTM B152, B248, B248M; EN 1652; DIN 1787; JIS H3100, H3250 | C10100 (OFE), C11000, C10200 (OF), C26000, C86200 | Thickness: 0.3mm - 100mm Width: Up to 1200mm Length: Up to 3000mm (or coils) Surface: Mill, Polished, Brushed |
| Copper Rods / Bars | ASTM B187, B301, B411; EN 12163, 12164; DIN 17672; JIS H3250 | C10100 (OFE), C11000, C14500, C36000, C63000 | Diameter/Rect. Size: 3mm - 300mm Shape: Round, Square, Hexagonal, Rectangular Condition: Drawn, Extruded, Hot Rolled |
| Copper Wires | ASTM B1, B2, B3, B258; EN 13601; IEC 60228; JIS H3100 | C10100 (OFE), C11000, C14420, C14500 | Diameter: 0.1mm - 20mm Temper: Soft, Annealed, Hard-Drawn Form: Bare, Tinned, Stranded, on Spools |
| Copper Foils / Strips | ASTM B103, B370; EN 1652; DIN 1787; JIS H3100 | C10100 (OFE), C10200, C11000, C19400, C26800 | Thickness: 0.02mm - 2.0mm Width: Up to 600mm Temper: Rolled, Annealed |
| CNC Machining Parts | As per Customer Drawing/Req. | All Common Copper Alloys (including C10100, C11000, C86200, etc.) | Process: Turning, Milling, Drilling, Tapping Tolerance: ±0.005mm - ±0.1mm Post-Processing: Deburring, Polishing, Plating |
Our factory
Our manufacturing facility operates a comprehensive and modern production line, equipped with advanced continuous casting, precision rolling, high-speed drawing, and multi-axis CNC machining centers, enabling us to process copper and copper alloys (such as C10100, C11000, C12200, C71500,C70600 etc.) into a full range of products including tubes, sheets, rods, wires, and foils. To ensure top-tier quality, we have implemented a rigorous in-process and final inspection system, utilizing state-of-the-art equipment such as spectrometers for material verification, digital tensile testers for mechanical property checks, precision dimensional gauges, and eddy current or ultrasonic testers for defect detection, guaranteeing that every product meets or exceeds international standards such as ASTM, EN, and JIS, as well as specific customer requirements.
