CORROSION-RESISTANT NI ALLOY WITH SUPERIOR RESISTANCE TO EMBRITTLEMENT AT MEDIUM TEMPERATURE

摘要

PURPOSE:To obtain a corrosion-resistant Ni alloy with superior resistance to embrittlement at medium temp. by adding specified amounts of Mo, B, Fe and other element to Ni. CONSTITUTION:This Ni alloy contains 26-30% Mo, 4-6% Fe, 0.05-1% one or more among V, Ti and Nb, and 0.001-0.01% B. Inevitable impurities in the alloy are regulated to 1% Cr, 1% Mn, 2.5% Co, 1% Si, 0.05% C, 0.025% P and 0.03% S. When parts made of this Ni alloy are annealed after cold working, welding, etc., annealing cracks are hardly caused and parts with superior resistance to embrittlement at medium temp. are obtd.