T-122 Introduction
Tantalum tungsten hafnium alloy is made from a certain amount of tungsten and hafnium added to the base of tantalum. Tantalum tungsten hafnium alloy has excellent thermal stability and high creep strength in the temperature range from 93˚C to 1426˚C. Since the year of 1960 to 1963, the United States successfully developed Ta-10W-2.5 Hf-0.01Zr-0.1Nb-0.02Mo alloy. Tantalum tungsten hafnium alloy is divided into solid - soluble strengthening alloy and dispersion strengthened alloy by reinforcement schedule.