GB815974A - Improvements in or relating to titanium-base alloys - Google Patents

Abstract

A titanium-base alloy contains one or more of the alpha p promoters Al, Sn and Sb in total amount 0.5-23 per cent, the Al content not exceeding 12 per cent and the Sb content not exceeding 19 per cent, one or more of the eutectoid beta promoters Cu 0.5-20 per cent, Co and Ni 0.5-12 per cent each, Si 0.25-3 per cent, Be 0.1-2 per cent and the remainder Ti at least 50 per cent and impurities. Up to one half of the eutectoid beta promoters may be substituted by one or more of Mo, V, Nb, Ta up to 20 per cent in total, Mn up to 5 per cent, Fe up to 3.5 per cent and Cr and W up to 12 per cent in total, the substitution being on a proportionate basis i.e. where the alloy contains Cu for example in amount of 10 per cent, the substituting elements may be present up to the maximum indicated proportions and proportionally less amounts of these elements are used with lesser amounts of Cu. Specifications 757,383, 762,590, 782,503, 782,564 and 815,975 are referred to.