Electrolytic Tough Pitch Copper (UNS C11000)

Image of electrolytic tough pitch Copper C11000 bars

Copper C11000, also known as electrolytic tough pitch (ETP) copper, is a commercially pure copper alloy. It is one of the most widely used copper alloys due to its excellent electrical and thermal conductivity, corrosion resistance, and malleability.

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Chemical Composition
ElementMinMax
Copper99.9%——

The following table provides a list of copper C11000 properties in both SI and US customary/Imperial units.

Click on the button to switch between Metric and Imperial units.

Table of Copper C11000 Properties
Physical Properties
Metric
Density8890 kg/m3
Mechanical PropertiesMetric
Tensile Strength (Ultimate)220 - 410 MPa
Tensile Strength (Yield)69 - 390 MPa
Shear Strength150 - 230 MPa
Young’s Modulus (E)115 GPa
Shear Modulus (G)44 GPa
Elongation at Break50%
Poisson’s Ratio (ν)0.34
Thermal PropertiesMetric
Melting Point1065 - 1083 °C
Thermal Conductivity390 W/m·K
Specific Heat Capacity (Cp)385 J/kg·K
Coefficient of Thermal Expansion (αL)1.7×10-5 1/°C
Electrical PropertiesMetric
Electrical Conductivity5.8×107 S/m
Electrical Resistivity1.7×10-8 Ω·m

The values in this table are approximate and can vary depending on various factors such as the specific manufacturing process and heat treatment applied to the alloy.

Advantages & Disadvantages of Copper C11000

AdvantagesDisadvantages
Excellent electrical conductivityLow strength and hardness
High thermal conductivityVulnerability to stress corrosion cracking
Good corrosion resistanceHigh cost
Malleability and formabilityLimited temperature resistance
Excellent solderability and brazing

Applications of Copper C11000

Copper C11000 finds numerous applications across various industries due to its excellent electrical conductivity, thermal conductivity, corrosion resistance, and malleability. Key applications include:

  • Electrical Wiring and Conductors: Extensively used in electrical wiring and conductors due to its high electrical conductivity. Employed in residential, commercial, and industrial buildings to transmit electricity efficiently and safely.
  • Electrical Components: Used in the production of electrical components such as connectors, terminals, switches, and printed circuit boards (PCBs). Its excellent electrical conductivity ensures reliable performance and low electrical losses.
  • Heat Exchangers: The high thermal conductivity makes it suitable for heat exchangers, where it efficiently transfers heat between two fluids or gases. Commonly used in HVAC systems, refrigeration units, and industrial processes.
  • Plumbing Systems: Widely used in plumbing systems for water supply and distribution. Its corrosion resistance, malleability, and ease of installation make it a preferred choice for pipes, fittings, valves, and faucets.
  • Architecture and Construction: Utilized in architectural applications due to its aesthetic appeal and durability. Used for roofing, gutters, downspouts, decorative elements, and as cladding for buildings. Its corrosion resistance ensures longevity even in outdoor environments.
  • Electronics and Telecommunications: Employed in these industries for various applications including printed circuit boards (PCBs), connectors, switches, transformers, and electromagnetic shielding due to its excellent electrical conductivity and reliability.
  • Industrial and Manufacturing Equipment: Used in various equipment including heat sinks, radiators, heat exchangers, and electrical motor components. Its high thermal conductivity and electrical conductivity make it suitable for efficient heat dissipation and electrical performance.
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