Steel material for sliding part and method of manufacturing steel material for sliding part

Abstract

A steel material for a sliding part with improved slidability and workability is provided. A steel material for a sliding part includes a steel material with a C content of 0.30 to 0.60 mass %, having a microstructure including (a) at least one of tempered martensite and bainite and (b) an iron carbide, the volume fraction of the tempered martensite and bainite combined being not lower than 80% and the volume fraction of the iron carbide being not lower than 2.0%, the Vickers hardness being not lower than 300 and not higher than 600, the volume fraction of the iron carbide, X, and the Vickers hardness, Hv, satisfying the following relational expression, (1): X ≥ - 0 . 0 ⁢ 65 × Hv + 36. 5 , ( 1 ) where X is in % and Hv is in Hv.

Dependencies are inferred from the claim text.