Q. Which material is used to make ejector pin?

Answer

One of the most crucial parts in producing molded goods is a set of straight ejector pins made from high-quality die steel, such as EN-31, H-13(SKD 61), or HSS(M2). Hot forging and stress relieving the heads of the straight ejector pins ensures a high tolerance and a consistent surface quality. In injection molding, plastic is injected into a metal mold at high pressure and temperature, causing the plastic to harden into the exact shape of the mold. In galling, the adhesion component causes the crystalline structure to slip and rip, depositing or welding tiny particles on the neighboring surface. Galling wears down surfaces far more quickly than other types of wear.