C19400 copper alloy strip for semi-etching and preparation method of C19400 copper alloy strip

The invention discloses a C19400 copper alloy strip for semi-etching and a preparation method of the C19400 copper alloy strip, and belongs to the technical field of alloy preparation. The preparation method comprises the following steps: S1, burdening: taking a fine iron wire, copper, zinc and a copper-phosphorus intermediate alloy as smelting raw materials; s2, smelting, wherein the smelting raw materials are roasted, and the roasted smelting raw materials are put into a smelting furnace to be smelted to form melt; transferring the melt to a holding furnace for standing; the element content of the melt is measured, and when the Fe element content in the melt is lower than 2.1%-2.6%, the melt is supplemented into the heat preservation furnace in the form of copper-iron intermediate alloy; s3, casting, wherein the melt obtained after standing in the heat preservation furnace is subjected to casting forming, and a cast ingot is obtained; s4, hot rolling and on-line quenching are conducted ...