Products Description
C11000 copper, also known as electrolytic tough copper (ETP copper), is widely used in electrical and industrial fields due to its excellent electrical conductivity, good ductility, and corrosion resistance. C11000 copper is renowned for its high purity (copper content of at least 99.9%), making it particularly suitable for industries requiring extremely low electrical loss and stable performance. GNEE offers a variety of high-quality C11000 copper products, including plates, tubes, bars, angle steel, channel steel, profiles, and fittings, to meet the diverse needs of various industries.
Material Identification
| 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 | - |
Manufacturing Process
Melting
Casting
Extruding
Drawing & Pilgering
Cutting
packing
Inspection
Annealing
Our inventory is in stock
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C11000 copper tube |
C11000 drawn copper tube |
C11000 heat exchanger tube |
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C11000 copper pipe |
Copper alloy C11000 tube |
C11000 plumbing tube |
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C11000 ETP copper tube |
ASTM B75 C11000 tube |
C11000 copper hollow bar |
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C11000 seamless tube |
UNS C11000 copper tube |
C11000 square copper tube |
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C11000 welded tube |
C11000 condenser tube |
C11000 bright annealed tube |
about us
Our Product Portfolio
We supply an extensive inventory of copper products in various forms, grades, and tempers to meet your exact specifications.
1. Copper & Copper Alloy Tubes/Pipes
Type: Copper Seamless Tube, Copper Welded Tube, Capillary Tube, Refrigeration Tube, Heat Exchanger Tube, Condenser Tube, Dehydrated Tube.
Key Alloys: C10200 (OFHC Copper), C11000 (ETP Copper), C12200 (DHP Copper), C44300, C68700, C70600 (Copper Nickel 90/10), C71500 (Copper Nickel 70/30).
2. Copper & Copper Alloy Sheets/Plates
Type: Copper Sheet, Copper Plate, Copper Foil, Copper Thin Sheet, Copper Thick Plate, Embossed Sheet, Perforated Sheet.
Key Alloys: C10200, C11000, C17200 (Beryllium Copper), C26000 (Cartridge Brass), C26800, C28000 (Muntz Metal).
3. Copper & Copper Alloy Bars/Rods
Type: Copper Round Bar, Copper Square Bar, Copper Hexagonal Bar, Copper Flat Bar, Copper Wire Rod.
Key Alloys: C10100, C11000, C36000 (Free-Cutting Brass), C38500 (Architectural Bronze).
4. Copper & Copper Alloy Strips/Wires
Type: Copper Strip, Copper Coil, Copper Flat Wire, Copper Bare Wire, Copper Braided Wire, Copper Tin-Plated Wire.
Key Alloys: C11000, C26000 (Brass Strip), C51900 (Phosphor Bronze), C52100, C70400.
Quality & Standards
We guarantee that all our products comply with international and national standards, ensuring performance, reliability, and safety.
International Standards: ASTM, EN, DIN, JIS, ISO.
Common Standards: ASTM B111,ASTM B68, B75, B88, B96, B152, B187, B465.
Why Choose Us?
One-Stop Shop: A comprehensive range of copper products simplifies your sourcing.
Quality Assured: Rigorous inspection and material traceability.
Global Logistics: Efficient and reliable shipping to destinations worldwide.
Technical Support: Expert assistance with material selection and specification.






