BOLT MADE OF TITANIUM ALLOY

摘要

PROBLEM TO BE SOLVED: To provide a bolt made of a titanium alloy which has a low Young's modulus and high strength and is highly elastically deformable. SOLUTION: This bolt made of the titanium alloy consists of the titanium alloy which contains at least a group Va (vanadium group) element and titanium (Ti) as an essential component, and exhibits the characteristics that the inclination of the tangent on a stress-strain diagram obtained by a tension test decreases with an increase in the stress within the elastic deformation region existing in the range up to the tensile elasticity limit strength defined as the stress when the stress to be exerted truly attains 0.2% in permanent strain in the tension test from 0.