Ni-W alloy with excellent corrosion resistance and abrasion resistance

摘要

PURPOSE: To obtain an Ni-W alloy excellent in corrosion resistance and wear resistance in the region ranging from ordinary temp. to a high temp. by specify ing a composition consisting of C, Si, Mn, Al, Fe, Cr, N, W, Mo, Nb, and Ti and also controlling the contents of P and S among impurities. ;CONSTITUTION: The alloy is an Ni-W alloy having a composition which consists of, by weight, 0.2-1.0% C, ≤1.0% Si, 0.1-2.0% Mn, 0.03-15.0% A, ≤10.0% Fe, 10.0-19.5% Cr, ≤0.3% N, 15.5-55.0% W independently or in combination with Mo (where ≤20% Mo in the case of combination), further either or both of 3.0-15.O% Nb and 3.0-10.0% Ti, and the balance Ni with inevitable impurities and further contains, if necessary, one or more kinds among ≤0.01% each of Mg, Ca, Y, La, Ce, and B and in which the contents of P and S among the impurities are regulated to ≤0.030% and ≤0.010%, respectively. This alloy combines, in the region from room temp. to a high temp., the wear resistance comparable to that of stellite with the corrosion resistance equal to or higher than that of alloy 718.;COPYRIGHT: (C)1993,JPO&Japio