This silver/oxygen-free copper is used as the commutator material in motors for automobiles. This material is produced by adding 0.03 to 0.2% of silver to oxygen-free copper. The silver provides excellent wear-resistance while retaining the superior electrical conductivity of oxygen-free copper demanded of commutator material. Dual gauge copper strip is also available.
| Alloy |
Chemical composition
(wt%) |
Electrical Conductivity
(%IACS) |
Softening temperature
(deg.C) |
|---|
| 3Ag-OFC |
Ag : 0.027~0.034,
Cu+Ag >= 99.96 |
97 |
350 |
| 4Ag-OFC |
Ag : 0.030~0.040,
Cu+Ag >= 99.96 |
97 |
350 |
| 20Ag-OFC |
Ag : 0.15~0.25,
Cu+Ag >= 99.96 |
97 |
360 |
|
* Link to Copper products.
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