There are various causes for the fracture of fastener bolts. In summary, bolt damage generally results from stress factors, fatigue, corrosion, hydrogen embrittlement, and other contributing factors. 1. Bolt Fracture 1.1 Stress Factors Exceeding norm...

Impact Toughness and Brittle Fracture of High-Strength Bolts, Screws, and Studs The inspection of high-strength bolts, screws, and studs is based on GB/T 3098.1-2010, Mechanical Properties of Fasteners – Bolts, Screws and Studs . Products leaving th...

This standard specifies the dimensional requirements and coating thicknesses for electroplated coatings on steel and steel alloy fasteners, and provides recommendations for hydrogen embrittlement relief of high tensile strength, hardened, or surface-...

The Middle East conflict has significantly affected the prices of various metal materials, as detailed below: Precious metals: The Middle East conflict is expected to further raise the price floor of precious metals. Gold's investment value has re-e...

1.Overview The technological advancement of vehicles and mechanical equipment is progressing toward greater safety, comfort, economy, and environmental friendliness. To date, the research, development, and manufacturing technologies for fastener mate...