The most common variety of copper available on the market, electrolytic tough pitch (ETP) copper is highly conductive, making it an ideal material for delivering electrical current for a wide range of applications. Also known as C11000 copper, ETP copper is considered to be commercially pure, with a minimum copper purity level of 99.9%.
What is a C11000 copper pipe?
ETP copper may be found in most electrical systems. The material's useful properties make it well-suited for both electrical and industrial use. C11000 copper's unique qualities include:
Workability and formability. ETP copper is highly workable at both hot and cold temperatures, with a Vickers hardness (HV) range of 45 to 155.
Solderability. ETP copper is highly solderable, which makes it ideal for building circuitry and other electrical components.
Conductivity. In addition to offering high thermal conductivity, ETP copper possesses electrical conductivity of up to 101% IACS.
Corrosion resistance. Like most copper materials, ETP copper is highly resistant to corrosion.
Compatibility with heat treatments. ETP copper may be heat-treated or annealed to improve its resistance to stress.
Recyclability. The material is also a sustainable option as it's recyclable.
Hydrogen embrittlement susceptibility. When hydrogen is present, ETP copper may become brittle and experience damage or fracturing.
Available Forms of C11000 Copper
Copper sheets. SBC offers Cu-ETP copper sheets up to 3/16 of an inch thick.
Copper plates. While similar to our sheets, our copper plates are available in thicknesses greater than 3/16 of an inch.
Copper rods. Our team provides round ETP copper cylinders in various sizes for applications ranging from large cables to small electrical wires.
Square and rectangular copper bars. We also carry square and rectangular ETP copper stock applicable for forming and machining projects.
Electrolytic Copper Applications
Busbars. ETP copper busbars are used for power distribution in electrical installations.
Motor windings. ETP copper is used for coils in motor windings to enhance electrical efficiency.
Transformer windings. This copper variety is highly valued for use in foil-wound transformers within electrical transmissions and panels as it's less susceptible to metal fatigue than other metals.
Welding fixtures. ETP copper is often used in welding fixtures due to its excellent thermal conductivity.
Anodes. ETP copper anodes are valued for their high conductivity and are used in a range of electrical arrays.
Grounding straps. The metal is an excellent option for grounding straps on a variety of equipment due to its high electrical conductivity.
Commutators. These ETP copper components ensure smooth directional flow within a motor or generator.
Additional electrical components. In addition to the items above, ETP copper may also be involved in the manufacture of the following: electrical conductors, contacts, switch parts, terminals, shielding tapes, and cable wraps.
Industrial products. Finally, ETP copper is good for industrial products like punched or stamped metal components, heat sinks, and chlorine battery caps.
Chemical composition
| Cu [%] | min. 99.9 |
| O [%] | max. 0.04 |
Physical properties
| Physical properties¹ | |
|---|---|
| Density | 8.9 g/cm³ |
| Electrical conductivity | 58 m/Ω·mm² 100% IACS² |
| Thermal conductivity | 385 W/m·K |
| Thermal expansion coefficient | 17.7·10-6/K |
| E modulus | 130 GPa³ |
Processing information
| Weldability | medium |
| Solderability | medium |
| Stress crack corrosion | none |
Mechanical properties
| Condition | Tensile strength Rm [MPa] | Yield strength Rp0.2 [MPa] | Elongation A50 [%] |
Hardness HV |
|
| R200/H40 | 200-250 | max. 100 | min. 33 | 40-65 | |
| R220/H40 | 220-260 | min. 140 | min. 33 | 40-65 | |
| R240/H65 | 240-300 | min. 180 | min. 8 | 65-95 | |
| R290/H90 | 290-360 | min. 250 | min. 4 | 90-110 | |
| R360/H110 | min. 360 | min. 320 | min. 2 | min. 110 |
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
