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High Strength and High Conductivity Copper Alloy KLF™ 170
CDA No. 19170
KLF™ 170 has electrical conductivity equivalent to C19400 and strength equivalent to 42 alloy.
Good Points
- Has high electrical and thermal conductivity. Electrical conductivity is equivalent to C19400 class.
- Has high strength with good electrical conductivity. Has excellent strength of 42 alloy class. (Temper ESH)
- Has good stamping formability and etching formability, resulting in no smut contamination in the etching process or
pre-plating process. - Has good solderability and platability. Protrusions in the silver plating are reduced.
- Has good bare bondability by gold wire and copper wire. Also applicable for direct bear wire-bonding without plating.
Nominal Compositions
Cu-0.7Ni-0.13P-0.1Fe-0.1Zn (mass%)
Characteristics
Fig. Softening Resistance of KLF™ 170
1. Physical Properties
| Specific Gravity | 8.9 |
|---|---|
| Coefficient of Thermal Expansion (293～573K) |
17.5 x 10-6/K |
| Thermal Conductivity (293K) | 267 W/m.K |
| Electrical Resistivity (293K) | 26.5 nΩ.m |
| Electrical Conductivity (293K) | 65 %IACS |
| Modulus Elasticity (293K) | 110 GPa |
* The above are typical characteristics.
2. Mechanical Properties
| Temper
|
Tensile Strength MPa |
Elongation
% |
Vickers Hardness MHv: 4.9N |
|---|---|---|---|
| SPH | 580～680 | 5 min | 170～210 |
| ESH | 610～730 | 5 min | 180～220 |
* The above tensile strength and hardness are our standard specifications. We will adjust these specifications by your requests.
3. 90°V-type Bend-formability (MBR)
| Temper | Good Way |
Bad Way |
|---|---|---|
| SPH | 0 | 0 |
| ESH | 1.0 | 2.0 |
* The above are typical characteristics.
The value slightly varies depending on the thickness of specimens.
Use
Leadframe for QFP, QFN package, Inner-frame for Heat spreader etc.
Others
Not used cadmium (Cd), lead (Pb), mercury (Hg), six value chrome (Cr+6), polybrominated biphenyl (PBB), Polybrominated biphenyl ether (PBDE) restricted with RoHS etc.
Kobe Steel, Ltd. Advanced Materials Business
Copper Rolled Products Unit
Copper Flat Rolled Products Sales Department
