A method for producing a Cr-Cu alloy containing between 30% to 80% by mass of Cr, wherein 30% by mass is excluded, and the remainder is composed of Cu and unavoidable impurities, comprising the steps of: - one of the following sintering and infiltrating steps to form a infiltrated compact being a material of Cr-Cu alloy containing a Cu matrix and Cr phases and Cr dissolved in the Cu-Matrix, wherein 0.1 % to 2.0 % by mass of the total amount of Cr is dissolved in the Cu-Matrix: (i) sintering a Cr powder to form a porous compact, and infiltrating the porous compact with Cu to form an infiltrated compact containing between more than 30% and 80% by mass of Cr; (ii) sintering a mixed powder compact of Cr and Cu, and further infiltrating the sintered compact with Cu to form an infiltrated compact containing between more than 30% and 80% by mass of Cr; (iii) sintering a mixed powder compact of Cr and Cu to form an infiltrated compact containing between more than 30% and 80% by mass of Cr; - a step of heating the infiltrated compact formed in the sintering and infiltrating step at a temperature in the range of 300°C to 1050°C to form fine particulate Cr, which is precipitated from the Cu-Matrix, wherein the fine particulate Cr is formed from the Cr dissolved in the Cu-matrix of the material of Cr-Cu alloy; - cold-rolling the infiltrated compact subsequently to the heating step; from the Cr-phases of the material of the Cr-Cu-alloy, thereby forming flattened Cr phases present in the Cu matrix of the Cr-Cu alloy; wherein a cold rolling reduction is at least 10%; wherein the cold rolling is for adjusting the average aspect ratio of the flattened Cr phases to be in the range from 2.0 to less than 100. - one of the following sintering and infiltrating steps to form a infiltrated compact being a material of Cr-Cu alloy containing a Cu matrix and Cr phases and Cr dissolved in the Cu-Matrix, wherein 0.1 % to 2.0 % by mass of the total amount of Cr is dissolved in the Cu-Matrix: (i) sintering a Cr powder to form a porous compact, and infiltrating the porous compact with Cu to form an infiltrated compact containing between more than 30% and 80% by mass of Cr; (ii) sintering a mixed powder compact of Cr and Cu, and further infiltrating the sintered compact with Cu to form an infiltrated compact containing between more than 30% and 80% by mass of Cr; (iii) sintering a mixed powder compact of Cr and Cu to form an infiltrated compact containing between more than 30% and 80% by mass of Cr; (i) sintering a Cr powder to form a porous compact, and infiltrating the porous compact with Cu to form an infiltrated compact containing between more than 30% and 80% by mass of Cr; (ii) sintering a mixed powder compact of Cr and Cu, and further infiltrating the sintered compact with Cu to form an infiltrated compact containing between more than 30% and 80% by mass of Cr; (iii) sintering a mixed powder compact of Cr and Cu to form an infiltrated compact containing between more than 30% and 80% by mass of Cr; - a step of heating the infiltrated compact formed in the sintering and infiltrating step at a temperature in the range of 300°C to 1050°C to form fine particulate Cr, which is precipitated from the Cu-Matrix, wherein the fine particulate Cr is formed from the Cr dissolved in the Cu-matrix of the material of Cr-Cu alloy; - cold-rolling the infiltrated compact subsequently to the heating step; from the Cr-phases of the material of the Cr-Cu-alloy, thereby forming flattened Cr phases present in the Cu matrix of the Cr-Cu alloy; wherein a cold rolling reduction is at least 10%; wherein the cold rolling is for adjusting the average aspect ratio of the flattened Cr phases to be in the range from 2.0 to less than 100.