Oxygen Free Copper - CDA 103

Element 

Composition

Copper                            

99.95 min (incl.Ag)

Lead  

0.005% max

Bismuth                 

0.0010% max

Total Imps

0.03% max (excl. O₂ & Ag)

Property

Value

Density

8.89 to 8.94 g/cm³

Melting Point

1083°C (1981°F)

Electrical Conductivity

101% IACS (minimum)

Thermal Conductivity

399 W/m·°C

Specific Heat

385 J/kg·K

Thermal Expansion Coefficient (20-200°C)

17.3 × 10⁻⁶ /°C

Electrical Resistivity

0.017 microhm·m

Modulus of Elasticity

118,000 N/mm²

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)

222 to 385 MPa (32 to 56 × 10³ psi)

Tensile Strength: Yield (Proof)

60 to 325 MPa (8.7 to 47 × 10³ psi)

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

Property

Value

Hot Working Temperature Range

750-950°C

Hot Formability

Good

Cold Formability

Excellent

Cold reduction between anneals

95% max.

Machinability rating (free cutting brass = 100)

20%

Annealing Temp.

Range 200-650°C

Stress Relieving Temp

Range 150-200°C