Finite Element Failure Analysis on 34crnimo6 Firing Pin in Fatigue Fracture

Weapon made by Pindad Company is an individual assault weapon which is set as standard weapon of TNI. Firing pin is one part of a weapon that has an important role in the shooting cycle. If the firing pin is damaged, it will result in the weapon not being able to fire. Damage to the firing pin can be caused by several things, such as material properties, treatment, design, cyclic load and heat factor. In this case, the authors use the finite element method to determine which factors are most influencing by impact and heat factor that made the failure of the firing pin. At the end of the paper, the authors draw the conclusion that the heat factor from the explosion has major influence in the fatigue fracture, and carbon content increasing caused CO2 emission from explosion as additional factor, which made the firing pin become brittle. (paper)