Patent ID: 6752883
Filing Date: 2004-06-22
Classification: C22C

Abstract:
A free-cutting Ni-base heat-resistant alloy containing Ni as a major component;containing C in an amount of 0.01 to 0.3 wt % and Cr in an amount of 14 to 35 wt %; containing at least one element selected from Ti, Zr and Hf in a total amount of 0.1 to 6 wt %, and S in an amount of 0.015 to 0.5 wt %; having dispersed in the matrix thereof a machinability improving compound phase, said phase containing any one of Ti, Zr and Hf as a major constituent of the metal elements, essentially containing C and either S or Se as a binding component for such metal elements; and satisfying the relations of: WTi+0.53WZr+0.27WHf>2WC+0.75WS; and WC>0.37WS where WTi represents Ti content (wt %), WZr represents Zr content (wt %), WHf represents Hf content (wt %), WC represents C content (wt %) and WS represents S content (wt %).