Tap Cutting Conditions

Recommended Tapping Speeds and Lubricants
 
 
Component Material Tapping Speed Lubricant
Ft/Min M/Min
STEEL MILD STEEL 30-50 9-15 SOLUBLE OR SULPHURISED OIL
STEEL up to 0.4% CARBON 20-40 6-12 SOLUBLE OR SULPHURISED OIL
STEEL up to 0.7% CARBON 20-30 6-9 SOLUBLE OR SULPHURISED OIL
STEEL over 0.7% CARBON 15-25 4.5-8 SOLUBLE OR SULPHURISED OIL
STEEL ALLOYS up to 60 Tons Tensile 15-25 4.5-8 SOLUBLE OR SULPHURISED OIL
STEEL ALLOYS over 60 up to 80 Tons Tensile 10-15 3-4.5 SULPHURISED OIL
STAINLESS STEEL MARTENSISTIC 10-20 3-6 SULPHURISED OIL
STAINLESS STEEL AUSTENITIC 10-15 3-4.5 SULPHURISED OIL
TOOL STEEL 15-25 4.5-8 SULPHURISED OIL
TITANIUM 15-25 4.5-8 SULPHURISED OIL
TITANIUM ALLOYS 8-12 2-4 SULPHURISED OIL
NICKEL ALLOY STEELS NIMONIC & INCONEL 8-12 2-4 SULPHURISED OIL
IRON GREY CAST 20-40 6-12 SOLUBLE OIL OR AIR BLAST
IRON MALLEABLE 20-40 6-12 SOLUBLE OIL OR AIR BLAST
IRON CAST ALLOY 15-30 4.5-9 SULPHURISED OIL
ALUMINIUM 50-70 14-21 SOLUBLE OIL OR PARALLEL
ALUMINIUM ALLOYS 30-50 9-15 SOLUBLE OIL OR PARALLEL
BRASS SOFT 70-100 20-30 SOLUBLE OIL OR PARALLEL
BRASS HARD 40-50 12-15 SOLUBLE OIL OR PARALLEL
BRONZE PHOSPHOR 30-40 9-12 SOLUBLE OIL OR PARALLEL
BRONZE HIGH TENSILE 25-35 8-11 SOLUBLE OIL OR PARALLEL
COPPER SOFT 50-70 15-20 SOLUBLE OIL OR PARALLEL
COPPER HARD 30-50 0-15 SOLUBLE OIL OR PARALLEL
GUN METAL 30-50 9-15 SOLUBLE OIL OR PARALLEL
MAGNESIUM ALLOYS 50-70 15-21 SOLUBLE OIL OR PARALLEL
ZINC BASE ALLOYS 50-70 15-21 SOLUBLE OIL OR PARALLEL
BAKELITE 30-50 10-15 AIR BLAST
PLASTIC SOFT 30-50 10-15 AIR BLAST
PLASTIC HARD 15-30 4.5-9 AIR BLAST

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