Method for producing a strip-shaped workpiece made of metal, wherein the metal is copper, or an alloy of a metal, wherein the alloy of a metal is a copper alloy, namely CuFe, in particular CuFe 2 P, or CuNiSn, CuNiSi, brass (CuZn), CuBe or CuSnZn or Bronze, in particular CuSn 4, CuSn 6, CuSn 8, with - a coating consisting of at least one layer of tin or a tin alloy, and - an optional intermediate layer, which is another layer, arranged between the metal or the alloy of the metal and the coating, of another metal, namely nickel or an alloy of another metal, namely a copper-nickel alloy, and - between the metal or the alloy of the metal and the coating, or between the metal or the alloy of the metal and the optional intermediate layer, an intermetallic phase containing the metal and tin or, when the optional intermediate layer is present, the metal and the other metal, wherein a) the coating or the optional intermediate layer, and then the coating, is/are deposited in sections onto a strip consisting of the metal or the alloy of the metal, b) then, in order to form or strengthen the intermetallic phase to a thickness of at most 500 nm, the strip is heated in sections to a temperature above 100°C and below the melting point of the coating, or is held at such a temperature, c) the strip passes through multiple processing stations, depending on the length, such that various processing steps are carried out simultaneously on the strip, with the exception of processing the start and the end of the strip, and d) after deposition of the layer when passing through one of the processing stations, a section of the strip that moves along the strip is heated to the temperature or is held at the temperature, wherein no point on the strip is heated to the temperature or held at the temperature for less than 10 seconds or for more than 40 seconds. - a coating consisting of at least one layer of tin or a tin alloy, and - an optional intermediate layer, which is another layer, arranged between the metal or the alloy of the metal and the coating, of another metal, namely nickel or an alloy of another metal, namely a copper-nickel alloy, and - between the metal or the alloy of the metal and the coating, or between the metal or the alloy of the metal and the optional intermediate layer, an intermetallic phase containing the metal and tin or, when the optional intermediate layer is present, the metal and the other metal, a) the coating or the optional intermediate layer, and then the coating, is/are deposited in sections onto a strip consisting of the metal or the alloy of the metal, b) then, in order to form or strengthen the intermetallic phase to a thickness of at most 500 nm, the strip is heated in sections to a temperature above 100°C and below the melting point of the coating, or is held at such a temperature, c) the strip passes through multiple processing stations, depending on the length, such that various processing steps are carried out simultaneously on the strip, with the exception of processing the start and the end of the strip, and d) after deposition of the layer when passing through one of the processing stations, a section of the strip that moves along the strip is heated to the temperature or is held at the temperature, wherein no point on the strip is heated to the temperature or held at the temperature for less than 10 seconds or for more than 40 seconds.