Generally speaking, fixtures depend on where you use them. If you need a lot of strength or support, you need materials like steel. If it is only used for general positioning, use aluminum or Jacob riser (Jacob riser refers to pvc plastic with certain strength and hardness). If steel is used, generally speaking, the most commonly used is 45 # steel (medium carbon steel). You need high hardness and wear resistance, so this steel needs quenching at 50~60 degrees. If it is generally hard and elastic, it needs 30~40 degrees quenching.

The fixture is only suitable for the ground, and the materials used on the machine tool belong to steel, spring steel, No.45 steel, SKT material and so on. If it is used to facilitate the processing of parts, it is generally enough, and any material can be used as long as it meets your requirements.