(57) A sintered material for valve guides consists of, by mass %, 1.3 to 3 % of C, 1 to
4 % of Cu, and the balance of Fe and inevitable impurities. The sintered material
exhibits a metallic structure made of pores and a matrix, the matrix is a mixed structure
of a pearlite phase, a ferrite phase, an iron carbide phase, and a copper phase, and
a part of the pores includes graphite that is dispersed therein. The iron carbide
phase is dispersed at 3 to 25 % by area ratio and the copper phase is dispersed at
0.5 to 3.5 % by area ratio with respect to a cross section of the metallic structure,
respectively.
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