Selection of threading tools for carbon steel and heat-treated workpieces
Selection of threading tools for carbon steel and heat-treated workpieces
Carbon steel, alloy steel, and other steel grades may undergo significant changes in their final physical properties after:
• Quenching and tempering
• Hardening
• Tempering
• Stress relief
• Other heat treatments
Therefore, the selection of threading tools should not solely rely on the "material grade," but should be based on the final hardness of the threaded location.
When the workpiece hardness increases, the life of HSS taps may decrease significantly. In this case, the following options should be re-evaluated:
