Page 136 - Cobra-Carbide-2020-Catalog

CARBIDE DRILLS

Speeds & Feeds

3FL DRILLS

Cutting Speed 3 Flute Drills
Material Group Material Type
m/min SFM
Steel Structural Steel
Free Cutting Steel
Unalloyed Heat Treatable Steel
Unalloyed Case Hardened Steel
Alloyed Case Hardened Steel
Nitriding Steel
Acid Resistant / Stainless Steel,

Stainless Steel Sulphured Austenitic Steel, Martensitic
High Tensile Steel Low Carbon Steel
Medium Carbon Steel
Alloyed Heat Treatable Steel
Tool Steel
High Speed Steel
Spring Steel
Cast Materials Cast Iron
Spheroidal Graphite & Malleable Ci
DRILLS Aluminum & Aluminum Alloys 200 - 215 654 - 703
Chilled Ci

Al Wrought Alloys
Aluminum Alloys
Al Cast Alloys < 10%si 200 - 215 654 - 703
654 - 703
200 - 215
Al Cast Alloys > 10%si 150 - 165 491 - 540
Special Alloys Special Alloys
Ti Alloys
Non Ferrous Metals Copper Low Alloyed 70 - 80 229 - 262
Brass 70 - 80 229 - 262
Bronze 70 - 80 229 - 262
Plastics Duro Plastics 90 - 100 294 - 327
Thermo Plastics 90 - 100 294 - 327
Magnesium Alloys Mg Alloys

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