What is a C11000 copper pipe?
GNEE supplies C11000 Electrolytic Tough Copper (ETP) bars or solid copper strips. We offer a variety of sizes and can cut to length to your specifications.
C11000 Electrolytic Tough Copper (ETP) is produced directly from carefully selected refined cathodes and castings under strictly controlled conditions to prevent contamination of the pure oxygen-free metal during processing. This OFHC copper production method ensures ultra-high purity, with a copper content of up to 99.99%. Due to the extremely low impurity content, the inherent properties of elemental copper are fully expressed.
This is the most commonly used copper, suitable for a wide range of electrical applications. The minimum conductivity rating for ETP is 100% IACS, with a purity requirement of 99.9%. Its oxygen content is typically 0.02% to 0.04%. Most ETP currently on the market meets or exceeds the 101% IACS specification. Similar to OF copper, for purity purposes, the silver (Ag) content is included in the copper (Cu) content.
Products Description
| Diameter (in) | Part Number |
| 0.3750 | 1100S-3 |
| 0.6250 | 1100S-5 |
| 1.1250 | 1100S-9 |
| 1.2500 | 1100S-10 |
| 1.3750 | 1100S-11 |


TYPICAL USES
Building Fronts, Gutters, Skylight Frames, Roofing, Flashing, Downspouts, Spouting
Pressure Vessels, Chemical Process Equipment, Chlorine Cells, Chimney Cap Screens, Heat Exchangers, Printing Rolls, Anodes, Rotating Bands, Kettles, Pans, Vats, Road Bed Expansion Plates
CHEMICAL COMPOSITION
| Cu(1) | O | |
| Min./Max. | 99.90 min | - |
| Nominal | - | .04 |
MECHANICAL PROPERTIES
| Temper | Section Size |
Cold Work |
Typ/ Min |
Temp | Tensile Strength |
Yield Strength (0.5% ext. under load) |
Yield Strength (0.2% offset) |
Yield Strength (0.05% offset) |
El | Rockwell Hardness |
Vickens Hard. |
Brinell Hard. |
Shear Strength |
Fatigue Strength* |
Izod Impact Strength |
||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| in. | % | F | ksi | ksi | ksi | ksi | % | B | C | F | 30T | 500 | 500 | 3000 | ksi | ksi | ft-lb | ||
| mm. | C | MPa | MPa | MPa | MPa | MPa | MPa | J | |||||||||||
| Flat Products | |||||||||||||||||||
| H02 | 0.04 | 0 | TYP | 68 | 42 | 36 | - | - | 14 | 40 | - | 84 | 50 | - | - | - | 26 | 13 | 0.0 |
| 1 | 20 | 290 | 248 | - | - | 14 | 40 | - | 84 | 50 | - | - | - | 179 | 90 | 0.0 | |||
| M20 | 0.025 | 0 | TYP | 68 | 32 | 10 | - | - | 50 | - | - | 40 | - | - | - | - | 22 | - | 0.0 |
| 0.64 | 20 | 221 | 69 | - | - | 50 | - | - | 40 | - | - | - | - | 152 | - | 0.0 | |||
| Rod | |||||||||||||||||||
| M20 | 1 | 0 | TYP | 68 | 32 | 10 | - | - | 55 | - | - | 40 | - | - | - | - | 22 | - | 0.0 |
| 25.4 | 20 | 221 | 69 | - | - | 55 | - | - | 40 | - | - | - | - | 152 | - | 0.0 | |||
| Shapes | |||||||||||||||||||
| M30 | 0.5 | 0 | TYP | 68 | 32 | 10 | - | - | 50 | - | - | 40 | - | - | - | - | 22 | - | 0.0 |
| 12.7 | 20 | 221 | 69 | - | - | 50 | - | - | 40 | - | - | - | - | 152 | - | 0.0 | |||
| M20 | 0.5 | 0 | TYP | 68 | 32 | 10 | - | - | 50 | - | - | 40 | - | - | - | - | 22 | - | 0.0 |
| 12.7 | 20 | 221 | 69 | - | - | 50 | - | - | 40 | - | - | - | - | 152 | - | 0.0 | |||
| Flat Products | |||||||||||||||||||
| H04 | 0.04 | 0 | TYP | 68 | 50 | 45 | - | - | 6 | 50 | - | 90 | 57 | - | - | - | 28 | - | 0.0 |
| 1 | 20 | 345 | 310 | - | - | 6 | 50 | - | 90 | 57 | - | - | - | 193 | - | 0.0 | |||
| Rod | |||||||||||||||||||
| H04 | 0.25 | 40 | TYP | 68 | 55 | 50 | - | - | 10 | 60 | - | 94 | - | - | - | - | 29 | - | 0.0 |
| 6.35 | 20 | 379 | 345 | - | - | 10 | 60 | - | 94 | - | - | - | - | 200 | - | 0.0 | |||
| Flat Products | |||||||||||||||||||
| H08 | 0.04 | 0 | TYP | 68 | 55 | 50 | - | - | 4 | 60 | - | 94 | |||||||
why choose us

why choose our products
We are a leading manufacturer and exporter specializing in a comprehensive range of high-quality copper products, including copper tubes, copper plates/sheets, copper bars, copper rods, copper wires, and copper strips. Our advanced manufacturing facilities are equipped with state-of-the-art continuous casting lines, extrusion presses, cold rolling mills, and drawing machines to ensure precision and consistency. Rigorous quality control is integral to our process, conducted through spectrometers for material verification, tensile testers, eddy current testers, and hydrostatic pressure testers, guaranteeing that all our products meet international standards for performance and durability.
E-mail: sales@gneesteel.com







