I'd like to make my own lathe screw. What material should I use?
45 steel rough car, and then quenched and tempered, and finally tune the thread
Lathe design three bar materials are No. 45 steel.
The ordinary lathe screw is only the general precision grade, and the requirement of the abrasion resistance and the material deformation is not particularly high. So use 45# or 40Cr conditioning.If it is a precision machine tool, such as a rib grinder or an ultra long connecting screw, it requires a high resistance to wear, a small amount of deformation, and can maintain the accuracy for a long time. Use 9Mn2V or CrWMn quenching.
