High Strength and High Conductivity Copper Alloy SuperKFC™

Enhanced characteristics superior to the original KFC™

CDA No.19240
SuperKFC™ is a precipitation-hardened copper alloy with fine iron-phosphorus intermetallic compounds in the matrix, formed by adding iron and phosphorus to copper, in a similar manner to the original KFC™. With increased amounts of iron and phosphorus content, this product achieves both higher strength and higher electrical conductivity than the original by employing the process metallurgy approach. SuperKFC™ offers properties comparable to or higher than C19400 but contains a smaller amount of iron content, enabling higher yield rate, direct bear wire-bonding, and improved surface conditions, and lowering overall manufacturing costs.

Features

  • High electrical and thermal conductivity, and higher electrical conductivity than C19400
  • High strength and high electrical conductivity. Available for a variety of applications. (Temper ESH)
  • Free of smut contamination during pre-plating process and etching process.
  • Excellent stamping formability and etching formability
  • Excellent bondability for gold and copper wires
  • Excellent platability for a variety of metals, such as Ag, Ni, Sn, solder, etc., achieving high Ag-plating reflection required for high-luminosity LED leadframes
  • Excellent solderability

Applications

  • Leadframes for QFP and QFN packages
  • Inner-frame for heat spreader, etc.

Nominal Compositions

Cu-0.3Fe-0.1P (mass%)

Characteristics

Physical Properties

Heat Resistance of SuperKFC™
Specific Gravity 8.9
Coefficient of Thermal Expansion (293~573K) 17.5 x 10-6/K
Thermal Conductivity (293K) 311 W/m.K(Temper H 337W/m.K)
Electrical Resistivity (293K) 22.1 nΩ .m(Temper H 20.3nΩ .m )
Electrical Conductivity (293K) 78 %IACS(Temper H 85%IACS)
Modulus Elasticity (293K) 122 GPa
  • *Note: The above are typical characteristics.

Mechanical Properties

Temper Tensile Strength
MPa
Elongation
%
Vickers Hardness
MHv: 4.9N
H 430–530 3 min 130–160
ESH 500–600 3 min 150–180
  • *Note: The above tensile strength and hardness are standard specifications. Technical specifications will be determined according to consumer requests.

90°V-Type Bend-Formability (MBR)

Temper Good Way Bad Way
H 0.5 1.0
ESH 1.0 1.5
  • *Note: The above are typical characteristics. The value slightly varies depending on the thickness of specimens.

Contact Us

You can reach us by clicking the inquiry button.