Patent ID: 7381369

Claim:
A metal component composed of a free cutting alloy, having at least a part of the surface thereof subjected to cutting, wherein the free cutting alloy is constituted as austenite iron containing alloy containing: 2 to 50 mass % Ni; 12 to 50 mass % Cr; 5 to 85.926 mass % Fe; 0.021 to 0.4 mass % C; one or more of Ti and Zr such that W Ti +0.52 W Zr =0.03 to 3.5 mass %, wherein W Ti and W Zr denote respective contents in mass % of Ti and Zr; and one or more of S and Se in the respective ranges of 0.06 to 1 mass % for S and 0.01 to 0.8 mass % for Se so that the total amount of S and Se is more than the C content; wherein a total content in mass % of Ti and Zr is 1.55 or more times as much as a total content in mass % of S and Se; wherein a (Ti,Zr) based compound containing one or more of Ti and Zr as a metal element component, C being an indispensable element as a bonding component with the metal element component, and one or more of S, Se and Te is dispersed in a matrix metal phase; wherein S content is determined such that a value of W S /(W Ti +0.52W Zr ) is 0.45 or less, wherein W S and W C denote a S content and a C content, respectively.