Which Type of Form Tap Is Best for Stainless Steel?

          When machining stainless steel such as 304, 316 and 303, ordinary form taps often face problems like material adhesion, overheating, high torque and even tap breakage. For stable and high-efficiency threading, fluted form taps with high-performance coatings are the most suitable choice.
          First,We need select the high quality materials PM-HSS or HSS-E for the form taps,Stainless steel will harden during processing, so the cutting edge of the extrusion tap must be extremely sharp and wear-resistant. Taps made of cobalt (Co) or through powder metallurgy have high hardness and good red hardness, which can resist high-temperature and wear.
          Form taps with axial oil grooves can supply cutting fluid directly to the forming zone, delivering efficient cooling and lubrication. This greatly reduces friction and torque, prevents built-up edge and workpiece welding, and ensures smooth, precise threads.
          Paired with coatings like TiAlN, AlTiN or CrN, these taps offer excellent heat resistance and anti-adhesion properties, perfectly matching the tough characteristics of stainless steel. They extend tool life significantly and ensure consistent thread quality in mass production.
        In short, coated form taps with oil grooves are the optimal solution for threading stainless steel, delivering reliability, precision and long service life.