| 摘要 |
A leadless copper alloy bar and a preparation method therefor. The copper alloy bar is composed of the following components in percentage by weight: 0.5 to 1.5% of nickel, 0.03 to 0.5% of manganese, 0.1 to 0.5% of aluminum, 0.1 to 0.5% of iron, 1 to 2.5% of zinc, 0.5 to 1.5% of tin, 0.2 to 1.0% of silicon, 0.01 to 0.3% of phosphorus, 0.1 to 0.5% of antimony and the balance of copper. A blank ingot is obtained by continuous cast, and then a copper alloy tube is produced by extrusion by using an extruder. |
