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Copper C101 (OFE Copper)

Copper C101 (Oxygen-Free Electronic) is 99.99% pure copper with the highest electrical and thermal conductivity of any commercial copper. It is used in critical electronic and high-vacuum applications where maximum conductivity is required.

Machinability

20/100

Tolerance

±0.02 mm

Category

Copper Alloys

Material Properties

PropertyValue
Tensile Strength220 MPa (32 ksi)
Yield Strength69 MPa (10 ksi)
Hardness42 HRF
Density8.94 g/cm³
Machinability Rating20/100
Thermal Conductivity391 W/m·K
Melting Point1,083 °C
Tolerance±0.02 mm

Common Grades

C101C10100OFEOFHC

Advantages

  • Highest conductivity
  • Excellent for vacuum applications
  • Superior purity (99.99%)
  • Non-magnetic

Limitations

  • Very soft and gummy to machine
  • Expensive
  • Tarnishes easily
  • Low strength

Common Applications

Waveguides

Superconductor components

Vacuum chambers

Electron tube parts

Bus bars

Industries Served

ElectronicsTelecommunicationsEnergyAerospace

Available Surface Finishes

Nickel PlatingTin PlatingSilver PlatingPassivation

Material Comparisons

Copper C101 (OFE) vs C110 (ETP): Which Grade to Choose?

View Comparison→

Related Materials

Copper C110 (ETP Copper)

Machinability: 20/100

View Details→

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