For transitional shaft components, is 45 steel or 2Cr13 a better material choice?
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Dear experts, I have a question: for transitional shaft components that are used to connect electric or pneumatic actuators, such as shafts that do not come into contact with the medium and operate once every half hour, would it be better to use 45 steel or 2Cr13 as the material for these shafts?
Both have similar strengths; 45 steel will rust, but it is cheaper. These two are acceptable for pneumatic use; it is recommended to choose them based on the material of the valve stem, aiming for a material that is stronger than that of the valve stem.
45 steel will do; the shafts that connect the valves to the actuators are generally made of carbon steel