Because in use, the need to clamp the workpiece repeatedly, it is required that the fixed pin shaft should have good wear resistance, therefore, should choose a better material t10a or choose 20th Steel table carburizing quenching.
1, pin commonly used materials are: Q235, No. 20th Steel, 35th steel, 45th Steel, 40CR and so on. 2, PIN is a class of standardized fasteners, can be static fixed connection, can also be connected with the relative movement, mainly for 20 pieces of the hinge, forming a hinge connection. Pin shafts are usually locked with open pins for reliable operation and easy disassembly. The international standard for PIN shafts is ISO 2,341:1986. Domestic Standard gb/t882-2008.