Fabrication of Ultra High Strength Bol t and Its Mechanical Properties

Abstract

A set of hexagon bolt, hexagon nut and plain washers, of which strength is 1700MPa-class, were fabricated from a 0.6%C-2%Si-1%Cr-1%Mo steel. The feature of this steel is both ultra high strength and high resistance against delayed fracture. The fabrication process and the mechanical properties that were obtained from the standard materials tests were reported in this study.