Coatings For Taps

Below are shown our current recommendations for taps in various materials. They are listed in order of preference. Those in parenthesis should be viewed as alternatives, but not in order of preference. When Maxi #1 is shown, that is our designation for Nitride. Remember to increase SFM by 50% for TiN and TiCN and 100% for TiAlN.

Material Coating
Carbon Steels 1010, 1045 TiCN, TiN, (Oxide, Oxide over Nitride)
Alloy Steels 4140, 8620 TiCN, TiN (Oxide, Oxide over Nitride)
Tool Steels A2, D2, H13 TiCN, TiN (TiAlN, Oxide, Oxide over Nitride)
300 Stainless 304, 316 TiCN, TiN (Oxide, Oxide over Nitride)
400 Stainless 414, 440 TiCN, TiN (Oxide, Oxide over Nitride)
PH Stainless 15-5PH, 17-4PH TiCN, TiAlN (TiN, Oxide, Oxide over Nitride)
Cast Iron, Ductile TiCN, TiN (Oxide, Oxide over Nitride, Maxi #1)
Cast Iron, Gray Class 20-50 TiCN, TiN (Oxide, Oxide over Nitride, Maxi #1)
Aluminum, Wrought1100, 2024 CrN, Maxi #1
Aluminum, Silicon Cast 319, 360, 380 (TiCN, Maxi #1) TiN, CrN
Copper, brass, bronze, Zinc, Magnesium CrN, Maxi #1
Titanium, Pure CP Ti Maxi #1, CrN
Titanium, Alloy Ti-6AL-4V Max #1, (TiN, TiCN, TiAlN, CrN)
Nickel Based Alloy Monel, Inconel TiCN, (TiN, TiAlN, CrN) (Maxi #1, Oxide, Oxide over Nitride)
Iron Based Alloy A-286, Incoloy TiCN, (TiN, TiAlN) (Maxi #1, Oxide, Oxide over Nitride)
Cobalt Based Alloy Haynes TiCN, (TiN, TiAlN, CrN) (Maxi #1, Oxide, Oxide over Nitride)
Plastics, Soft and Abrasive TiCN, (TiN, Maxi #1) CrN
Graphite TiCN, (TiN, Maxi #1) CrN