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| RECOMMENDED TAPPING SPEEDS AND LUBRICANTS | |||||||
| COMPONENT MATERIAL |
|
LUBRICANT | |||||
| 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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