Oxygen-free copper , Tough-pitch copper (Bar)
Main features
Oxygen free copper
The risk of hydrogen embrittlement (blowhole, cracking) during welding and brazing is low, because any oxygen is not contained. Oxygen free copper is recommended for the parts with welding and brazing.
Tough pitch copper
The content of copper is around 99.90%, it contains 200-500 ppm oxygen. The electrical conductivity, the thermal conductivity are same as Oxygen free copper.
Technical Data
Chemical composition
The chemical component of OFC (MOFC-10200) is as follows.
（Weight ％）
| Cu |
|---|
| 99.96Min |
The chemical component of tough-pitch copper (ETC) is as follows.
（Weight ％）
| Cu |
|---|
| 99.90Min |
Physical properties
It shows the physical properties of OFC (MOFC-10200) and tough-pitch copper (ETC).
Note: The
following are representative values.
| Property | Representative Value |
|---|---|
| Specific Gravity (293K) | 8.94 |
| Coefficient of Thermal Expansion (×10-6/K：293～573K) |
17.7 |
| Thermal Conductivity (W/(m・K)：293K) |
391 |
| Volume Resistivity (μΩm：293K) |
0.0171 |
| Electrical Conductivity (%IACS:293K) |
101 |
| Modulus of Elasticity (kN/mm²:293K) |
118 |
Mechanical properties (Sampling Direction : L. D.)
The mechanical properties of MOFC-10200 and ETC are as follows.
MOFC-10200 and ETC have
common
mechanical properties
Note: The data are average values of the results of the testing
performed on test samples taken in a longitudinal direction.
| Size | |||||
|---|---|---|---|---|---|
| ø80 | ø60 | ø35 | ø20 | ø10 | |
| H02 | 230 | 250 | 260 | 280 | 285 |
| H04 | 240 | 260 | 280 | 315 | 360 |