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Oxygen Free Copper - CDA 102

Oxygen Free Copper (CDA 102) is 99.95% pure copper with oxygen content below 0.001%. It offers high conductivity, corrosion resistance, and superior thermal performance, ideal for electrical connectors, transformers, and heat exchangers.

Chemical Composition

Element

Composition (%)

Copper (Cu)

99.95min.

Oxygen (O)

0.0010% Max

Other Elements (total)

0.05% Max

 

Physical Properties

Property

Value

Color

Copper

Melting Point (Solidus)

1981°F (1083°C)

Flow Point (Liquidus)

1981°F (1083°C)

Specific Gravity

8.94

Density

0.323 lbs/in³

Electrical Conductivity

101% IACS (minimum)

Electrical Resistivity

1.71 microhm-cm

Mechanical Properties

Property

Value

Elastic (Young's) Modulus

120 GPa (17 × 10⁶ psi)

Elongation at Break

1.5% to 50%

Poisson's Ratio

0.34

Rockwell F Hardness

40 to 100

Rockwell Superficial 30T Hardness

27 to 70

Shear Modulus

43 GPa (6.3 × 10⁶ psi)

Shear Strength

150 to 240 MPa (22 to 34 × 10³ psi)

Tensile Strength: Ultimate (UTS)

220 to 410 MPa (32 to 60 × 10³ psi)

Tensile Strength: Yield (Proof)

69 to 400 MPa (10 to 58 × 10³ psi)

Thermal Properties

Property

Value

Melting Point

1083°C (1981°F)

Specific Heat

385 J/kg·K

Thermal Conductivity

399 W/m·°C

Thermal Expansion Coefficient (20-200°C)

17.3 × 10⁻⁶ /°C

Brazing Temperature Range

1093°C - 1149°C (2000°F - 2100°F)

Fabrication Properties

Property

Value

Hot Working Temperature Range

600-800°C

Hot Formability

Good

Cold Formability

Excellent

Cold Reduction Between Anneals

95% max.

Machinability Rating

20% (of free-cutting brass)

Soldering

Excellent

Brazing

Excellent

Oxy-acetylene Welding

Good

Gas-shielded Arc Welding

Excellent

Resistance Welding: Spot and Seam

Not recommended

Resistance Welding: Butt

Good

Brazing Temperature Range

1093°C - 1149°C (2000°F - 2100°F)

Common Applications

Common Applications of Oxygen Free Copper (CDA 102):

  • Electrical connectors and terminals
  • Transformer windings
  • Busbars and conductors
  • Heat exchangers and radiators
  • High-end audio and video cables
  • Semiconductor components
  • Microwave and RF connectors
  • Vacuum tubes and specialized electrical equipment

How Can Drawn Metal Help

If you have any queries about the metal products that we offer, don’t hesitate to get in touch with us. 



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