A metal paste for joints, comprising: metal particles; and linear or branched monovalent aliphatic alcohol having 1 to 20 carbon atoms, wherein the metal particles comprise sub-micro copper particles having a volume average particle diameter of 0.12 μm to 0.8 μm, wherein the volume average particle diameter indicates a 50% volume average particle diameter and is obtained by a method of dispersing dry copper particles in which a volatile component is removed from the copper particles or the metal paste for joints that are a raw material, in a dispersion medium by using a dispersion agent, and of performing measurement with a particle size distribution measurement device of a light scattering method as indicated in the description, and wherein the term "sub-micro copper particles" indicates copper particles having a particle diameter of greater than or equal to 0.1 μm and less than 1 μm, wherein a content of the monovalent aliphatic alcohol is 0.3 part by mass to 1.8 parts by mass with respect to 100 parts by mass of the metal particles, wherein the metal particles further comprise flake-shaped micro copper particles having a maximum diameter of 2 μm to 50 μm and an aspect ratio of greater than or equal to 3.0, a content of the sub-micro copper particles is 30 mass% to 90 mass% on the basis of a total mass of the metal particles, and a content of the micro copper particles is 10 mass% to 70 mass% on the basis of the total mass of the metal particles, wherein the term "micro copper particles" indicates copper particles having a particle diameter of greater than or equal to 1 μm and less than 50 μm, wherein the metal particles further comprise at least one type of metal particles selected from the group consisting of zinc and silver, at a content of 0.01 mass% to 10 mass% on the basis of the total mass of the metal particles, wherein the metal paste further comprises a solvent component at a content of 2 mass% to 50 mass% on the basis of a total mass of the metal paste for joints, and wherein the metal paste further comprises a carboxylic acid having carbon atoms of greater than or equal to 10, wherein a content of the carboxylic acid is 0.07 part by mass to 2.10 parts by mass with respect to 100 parts by mass of the metal particles. metal particles; and linear or branched monovalent aliphatic alcohol having 1 to 20 carbon atoms, wherein the metal particles comprise sub-micro copper particles having a volume average particle diameter of 0.12 μm to 0.8 μm, wherein the volume average particle diameter indicates a 50% volume average particle diameter and is obtained by a method of dispersing dry copper particles in which a volatile component is removed from the copper particles or the metal paste for joints that are a raw material, in a dispersion medium by using a dispersion agent, and of performing measurement with a particle size distribution measurement device of a light scattering method as indicated in the description, and wherein the term "sub-micro copper particles" indicates copper particles having a particle diameter of greater than or equal to 0.1 μm and less than 1 μm, wherein a content of the monovalent aliphatic alcohol is 0.3 part by mass to 1.8 parts by mass with respect to 100 parts by mass of the metal particles, wherein the metal particles further comprise flake-shaped micro copper particles having a maximum diameter of 2 μm to 50 μm and an aspect ratio of greater than or equal to 3.0, a content of the sub-micro copper particles is 30 mass% to 90 mass% on the basis of a total mass of the metal particles, and a content of the micro copper particles is 10 mass% to 70 mass% on the basis of the total mass of the metal particles, wherein the term "micro copper particles" indicates copper particles having a particle diameter of greater than or equal to 1 μm and less than 50 μm, wherein the metal particles further comprise at least one type of metal particles selected from the group consisting of zinc and silver, at a content of 0.01 mass% to 10 mass% on the basis of the total mass of the metal particles, wherein the metal paste further comprises a solvent component at a content of 2 mass% to 50 mass% on the basis of a total mass of the metal paste for joints, and wherein the metal paste further comprises a carboxylic acid having carbon atoms of greater than or equal to 10, wherein a content of the carboxylic acid is 0.07 part by mass to 2.10 parts by mass with respect to 100 parts by mass of the metal particles.