Mixed powder for powder metallurgy

A mixed powder for powder metallurgy, comprising:

• an (a) iron-based powder;
• and
• a (b) lubricant,
• wherein the (b) lubricant contains a fatty acid metal soap,
• the (b) lubricant consists of a low-melting-point lubricant having a melting point of 86° C. or less and a high-melting-point lubricant having a melting point of more than 86° C.,
• the low-melting-point lubricant is at least one of a fatty acid monoamide having a melting point of 80° C. or more and a fatty acid having a melting point of 75° C. or more,
• the low-melting-point lubricant has at least one selected from the group consisting of an amide group, an ester group, an amino group, and a carboxyl group,
• a ratio R1 of the low-melting-point lubricant to whole of the (b) lubricant is 5 mass % or more and less than 90 mass %,
• a ratio R2 of a mass of a (b2) free lubricant to a mass of a (b1) binding lubricant is 0 or more and 15 or less, where the (b1) binding lubricant is the (b) lubricant adhering to a surface of the (a) iron-based powder, and the (b2) free lubricant is the (b) lubricant not adhering to the surface of the (a) iron-based powder, and
• an amount R3 of the low-melting-point lubricant contained as the (b2) free lubricant is less than 0.10 parts by mass with respect to 100 parts by mass of the iron-based powder.