Brand with limited spring effect

摘要

The strand has electrical wires made of copper and tin alloy, where transversal cross sectional area of the strand is 0.35 square mm. The copper and tin alloy comprises tin content of 17000 parts per million, oxygen content of 400 parts per million and unavoidable impurities content of 100 parts per million, where the rest of content of the alloy is copper. The electrical wires are free-from thermal treatment during fabrication of the strand.