Use of an iron based alloy for plastic molds

摘要

Iron-based alloy contains (in wt.%): 0.25-1, pref. 0.4-0.8, C; max. 1 Si; max. 1.6, pref. 0.3-0.8, Mn; 0.1-0.35, pref. 0.12-0.29, N; max. 1, pref. 0.002-0.8, Al; max. 2.8 Co, 14-25, pref. 16-19, Cr; 0.5-3, pref. 0.8-1.5, Mo; max. 3.9, pref. max 1.5 Ni; 0.04-0.4, pref. 0.05-0.2, V; max. 3 W; max. 0.18 Nb; max. 0.2 Ti; and balance Fe plus melting impurities. The sum of C+N is 0.5-1.2, pref. 0.61-0.95. The alloy may contain 0.02-0.45, pref. 0.2-0.3 S. The alloy may be provided with a surface coating of carbide and/or nitride and/or oxide of Ti and/or V and/or Al.