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C101
Copper 101 – High Conductivity (ETP) Coil
C10100 / CW004A
Overview
Copper 101 is the industry standard high-conductivity copper, also known as Electrolytic Tough Pitch (ETP) copper. With a nominal conductivity of 100% IACS, it is the material of choice for electrical conductors, busbars, and components where maximum electrical and thermal conductivity are required. Copper 101 is tough, ductile, and malleable with excellent cold and hot working characteristics.
Chemical Composition
| Element | Min | Max |
|---|---|---|
| Copper (Cu) | 99.90% | — |
| Oxygen (O) | — | 0.04% |
| Others (Total) | — | 0.10% |
Alloy Designations
CENCW004A
BSC101
UNSC11000
ISOCu-ETP
Mechanical Properties
Tensile Strength200–360 MPa
Proof Stress (0.2%)50–340 MPa
Elongation (A50)5–50%
Hardness40–110 HV
Machinability Rating20 (vs. 100 for free-cutting brass)
Physical Properties
Density8.92 g/cm³
Melting Point1,083°C (1,981°F)
Electrical Conductivity100% IACS
Electrical Resistivity0.171 × 10⁻⁶ Ω·m
Thermal Conductivity391 W/m·K
Coefficient of Thermal Expansion16.9 × 10⁻⁶ /K
Modulus of Elasticity117 GPa
Typical Applications
- Electrical busbars and conductors
- Power distribution switchgear
- General engineering components
- Electronics and PCB connectors
- Telecommunications equipment
- Roofing and architectural cladding
- Heat exchangers and heat sinks
Fabrication & Joining
- Excellent cold working in annealed condition
- Very readily hot worked
- Soldering: Excellent
- Brazing: Good
- Butt Welding: Good
- Gas Shielded Arc Welding: Fair
- Annealing temperature: 370–650°C
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