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TAPS ENGINEERING DATA MATERIALS / TREATMENTS / FLUIDS
MATERIAL HOOK OR RAKE ANGLES,
SUGGESTED SURFACE TREATMENTS,
CUTTING FLUIDS & CUTTING SPEEDS
(Starting Recommendations Only)
DRILLS Material Hook or Suggested Lubricant / Coolant Speed / SFM
To Be Tapped Rake Angle Surface Treatment**
Soluble, Light Base, or Lard Oil 90 - 150
ALUMINUM (WROUGHT) 12 - 15 HOOK TiN, TiCN Soluble or Lard Oil 65 - 75
ALUMINUM DIE CASTING 20 - 60
ALUMINUM BRONZE 8 - 10 HOOK TiN, TiCN, CrN, TiAlN+WC/C Mineral Oil w/Lard, or Light Oil 25 - 40
BAKELITE (HARD PLASTIC) Dry or Air Jet 50 - 90
END MILLS BERYLLIUM COPPER 0 - 3 RAKE N, TiN 100 - 200
BRASS Soluble Light Base Oil 80 - 150
BRONZE (FREE-MACHINING) 0 - 3 RAKE TiCN Soluble Light Base Oil 100 - 200
CAST BRASS Soluble Light Base Oil 20 - 80
CAST IRON (GRAY) 12 - 14 HOOK TiAlN+WC/C, CrN, N Soluble Light Base Oil 80 - 150
COPPER 10 - 20
COPPER - NICKEL 0 - 3 RAKE None, TiCN Dry or Soluble Oil 65 - 100
DELRIN Soluble Light Base Oil 30 - 50
DUCTILE IRON 2 - 6 HOOK None, TiCN, N Soluble Light Base Oil 50 - 90
DURALUMIN Dry, Air Jet, or Water Soluble 8 - 20
FERRO-TIC 2 - 5 RAKE N, TiCN Soluble or Sulphur Based Oils 25 - 40
FIBERGLASS 8 - 20
ROUTERS HASTELLOY 0 - 3 RAKE N, TiCN Soluble or Lard Oil 8 - 20
INCONEL Anti-Seize Compound 100 - 150
MAGNESIUM 18 HOOK TiAlN+WC/C, CrN 30 - 50
MALLEABLE IRON Dry or Air Jet 8 - 20
MANGANESE 12 HOOK N, TiCN Sulphur Based Oils 20 - 60
MANGANESE BRONZE Sulphur Based Oils 20 - 45
MOLYBDENUM 5 - 8 HOOK TiAlN+WC/C, TiN, N Soluble Light Base Oil 8 - 20
MONEL Soluble or Sulphur Based Oils 100 - 200
NAVAL BRASS 3 - 6 HOOK N+O, TiN, TiCN Sulphur Based Oils 80 - 150
NAVAL BRONZE Soluble Light Base Oil 20 - 60
THREAD MILLS NICKEL SILVER 12 - 14 HOOK TiAlN+WC/C, CrN Sulphur Based Oils 5 - 25
& TAPS NICKEL (PURE) Sulphur Based Oils 8 - 20
NITRALLOY 0 - 3 NEG RAKE None Soluble Light Base Oil 8 - 20
NITRONIC (*NO GUARANTEE) Soluble Light Base Oil 65 - 100
NYLON 0 - 3 RAKE TiCN Sulphur Based Oils
PLASTICS: Soluble Light Base Oil 65 - 100
12 - 15 HOOK CrN Sulphur Based Oils
THERMOPLASTIC (SOFT) Sulphur Based Oils 25 - 40
ABS, DELRIN, NYLON, PVC, etc. 12 - 15 HOOK N, CrN Dry, Air Jet or Water Soluble
25 - 80
THERMOSETTING (HARD) 18 - 20 HOOK (MUST) CrN Dry, Air Jet or Water Soluble 50 - 200
BAKELITE, L AMINATES, 20 - 60
ENGRAVERS PHENOLIC, POLYESTERS, etc. 3 RAKE N+O, TiN, TiCN Dry or Air Jet
40 - 90
POWDERED METAL (Sintered) 0 - 3 RAKE TiCN Soluble Light Base Oil 40 - 90
RUBBER, HARD Dry 20 - 50
SILICON BRONZE 0 - 3 RAKE N, TiCN 40 - 90
STEEL: Soluble Light Base Oil
12 - 14 HOOK N, TiN, TiCN 20 - 40
CARBON STEEL Sulphur Based Oils 8 - 20
COLD-ROLLED STEEL (1018, etc.) 12 - 15 HOOK N, TiCN Sulphur Based Oils 20 - 50
FORGED Sulphur Based Oils 20 - 50
BORING BARS LEADED (12L14, etc.) 0 - 3 RAKE N Sulphur Based Oils 8 - 20
STAINLESS: 65 - 100
2 - 6 HOOK None, TiCN Sulphur Based Oils 50 - 200
FREE MACHINING Sulphur Based Oils 50 - 200
PRECIP. HARDENING 0 - 3 RAKE N, TiCN Sulphur Based Oils
TOOL STEEL Sulphur Based Oils
TITANIUM 12 - 15 HOOK N, TiCN Sulphur Based Oils
TUNGSTEN Dry, Air Jet or Water Soluble
TURCITE (SOFT PLASTIC) 0 RAKE N, TiCN Soluble Light Base Oil
ZAMAK (ZINC DIE CAST) Soluble Light Base Oil
ZINC 12 - 14 POS RAKE N, TiN, TiCN
5 - 8 HOOK N, TiN
REAMERS 5 - 8 HOOK N, TiN
0 - 3 RAKE TiCN
SAWS 0 RAKE TiCN
0 - 3 RAKE None
TECHNICAL 0 - 3 RAKE N, TiCN
INDEX 10 - 12 HOOK O, N, TiN
10 - 12 HOOK O, N, TiN
10 - 12 HOOK O, N, TiN
O, N, TiN
12 HOOK
N, TiN, TiCN
12 - 14 HOOK N, TiN, TiCN
12 - 14 HOOK N, TiN, TiCN
12 - 14 HOOK
15 - 20 HOOK O, N, CrN
TiN
5 RAKE
5 - 8 HOOK N, TiN
10 - 12 RAKE TiCN, TiN, CrN, TiAlN+WC/C
10 - 12 RAKE TiCN, TiN, CrN, TiAlN+WC/C
* If problems are encountered when tapping nitronic (or any other material), please consult Tool Designers.
** See page 206 for definitions of tool coating abbreviations.
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