Use of a dispersion hardened martensitic non-rusting chromium-nickel steel in the manufacture of machine-driven rotating tools, preferably drilling, milling, grinding and cutting tools

摘要

Use of a dispersion hardened martensitic non-rusting chromium-nickel steel in the manufacture of machine-driven rotating tools, preferably drilling, milling, grinding and cutting tools is new. The steel contains (in wt.%) 10-14 Cr, 7-11 Ni, 0.5-6 Mo, 0.5-4 Cu, 0.05-0.55 Al, 0.4-1.4 Ti, up to 0.3 C + S, less than 0.05 S, less than 0.05 P, up to 0.5 Mn, up to 0.5 Si, up to 0.2 Ta, Nb, V and W, optionally up to 9.0 Co, optionally 0.0001-0.1 B, and iron the remainder. An Independent claim is also included for a machine-driven rotating tool made from the above steel alloy.