Patent ID: 6068814
Filing Date: 2000-05-30
Classification: C03B,C22C,Y02P

Abstract:
A cobalt-based heat-resisting alloy containing Co, Cr, Ni, W, C, Nb, Si and Zr and impurities, wherein the alloy comprises the following chemical composition by wt % in Table 1 without containing any rare earth metal except unavoidable impurities, selectively contained in Table 2TABLE1  Element Scope Element Scope Element Scope  Cr 25.about.33% Nb 2.5.about.4.8% Si 0.1.about.0.3% Ni 9.about.12% Zr 0.1.about.0.3% Mn 0.1.about.[03%]0.3% W 6.about.12% C 0.6.about.1.0% Ti 0.1.about.0.3% V 0.05.about.0.8% Co Balance  TABLE 2  Impurity Scope Impurity Scope  S 0.06% or less Hf* *The indicative composition Al 0.07% or less Ta* contains less than 2.6% of a Fe 0.7% or less Y* combined total weight of Hf, Ta P 0.01% or less and Y