MITSUBISHI MATERIALS CORPORATION
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MZE / MZS / Micro CUTTING CONDITIONS
USE AND CHARACTERISTICS OF THE SOLID CARBIDE DRILL
  • Solid Carbide Drill Ideal drill for all materials - the Solid Carbide Drill offers a combination of wide
    flute and quality proven coating technology.
  • Linear cutting edge permits easier regrinding and simple cutting edge honing.
  • Easy discharge of chips because of wide and deep flute.
  • Much higher drilling accuracy than HSS drill.
  • 5 times higher efficiency and 10 times longer tool life than HSS drill.

RECOMMENDED CUTTING CONDITIONS OF MZE/MZS DRILLS
MZE(External Coolant)
Workpiece Hardness Drill Diameter
Ø .114 - Ø .236 Ø .236 - Ø .394
Conditions Conditions
Cutting Speed
(SFM) 		Feed
(IPR) 		Cutting Speed
(SFM) 		Feed
(IPR)
P Mild steel ≤180HB 150 .008 180 .010
Carbon steel
Alloy steel 		180 - 280HB 130 .008 165 .010
280 - 350HB 115 .006 150 .008
M Stainless steel ≤200HB 65 .004 80 .0048
K Cast Iron Tensile Strength
≤350MPa		 165 .010 195 .012
Ductile Cast iron Tensile Strength
≤450MPa		 150 .008 180 .010
S Heat Resistant Alloy - 65 .004 80 .005
H Hardened steel 40 - 60HRC 65 .004 80 .0048

  Ø .394 - Ø .551 Ø .551 - Ø .630
Conditions Conditions
Workpiece Hardness Cutting Speed
(SFM) 		Feed
(IPR) 		Cutting Speed
(SFM) 		Feed
(IPR)
P Mild steel ≤180HB 215 .012 230 .014
Carbon steel
Alloy steel 		180 - 280HB 195 .012 215 .014
280 - 350HB 180 .010 195 .012
M Stainless steel ≤200HB 80 .006 80 .008
K Cast Iron Tensile Strength
≤350MPa		 230 .014 230 .016
Ductile Cast iron 230 - 300HB
≤450MPa		 215 .012 230 .014
S Heat Resistant Alloy - 80 .006 98 .008
H Hardened steel 40 - 60HRC 80 .006 100 .008

MZS(Internal Coolant)
Workpiece Hardness Drill Diameter
Ø .078- Ø .236 Ø .236 - Ø .394
Conditions Conditions
Cutting Speed
(SFM) 		Feed
(IPR) 		Cutting Speed
(SFM) 		Feed
(IPR)
P Mild steel ≤180HB 260 .008 425 .010
Carbon steel
Alloy steel 		180 - 280HB 230 .008 360 .008
280 - 350HB 195 .006 230 .008
M Stainless steel ≤200HB 130 .004 230 .008
K Cast Iron Tensile Strength
≤350MPa		 330 .010 425 .012
Ductile Cast iron Tensile Strength
≤450MPa		 195 .008 230 .008
N Aluminum Alloy - 390 .008 490 .012
S Hardened steel - 65 .004 80 .005

  Ø.394- Ø .472

Ø .472 - Ø .781
Conditions Conditions
Workpiece Hardness Cutting Speed
(SFM) 		Feed
(IPR) 		Cutting Speed
(SFM) 		Feed
(IPR)
P Mild steel ≤180HB 460 .012 490 .014
Carbon steel
Alloy steel 		180 - 280HB 395 .010 425 .012
280 - 350HB 260 .010 295 .012
M Stainless steel ≤200HB 260 .010 295 .010
K Cast Iron Tensile Strength
≤350MPa		 460 .014 490 .014
Ductile Cast iron Tensile Strength
≤450MPa		 260 .010 295 .012
N Aluminum Alloy - 525 .016 555 .019
H Hardened steel - 85 .006 98 .008

USE AND CHARACTERISTICS OF THE MZS INTERNAL COOLANT DRILL
  • MZS INTERNAL COOLANT DRILLHigh efficiency and high precision drilling.
  • High stability when drilling steel, cast iron, stainless steel and other gummy materials.
  • No peck required when drilling holes up to 5XD ratio.

RECOMMENDED CUTTING CONDITIONS OF MICRO MZE/MZS DRILLS
MZE(External Coolant)
Workpiece Hardness Drill Diameter
Ø .039 - Ø .120
Conditions
Cutting Speed
(SFM) 		Feed
(IPR)
P Mild steel ≤180HB 75 .0035
Carbon steel
Alloy steel 		180 - 280HB 65 .003
280 - 350HB 55 .0025
M Stainless steel ≤200HB 50 .0015
K Cast Iron Tensile Strength
≤350MPa		 80 .003
Ductile Cast iron 230 - 300HB
≤450MPa		 70 .003
S Heat Resistant Alloy - 32 .002
H Hardened steel 40 - 60HRC 32 .002

MZS(Internal Coolant)
Workpiece Hardness Drill Diameter
Ø .039 - Ø .120
Conditions
Cutting Speed
(SFM) 		Feed
(IPR)
P Mild steel ≤180HB 200 .0035
Carbon steel
Alloy steel 		180 - 280HB 175 .003
280 - 350HB 150 .0025
M Stainless steel ≤200HB 100 .0015
K Cast Iron Tensile Strength
≤350MPa		 190 .003
Ductile Cast iron Tensile Strength
≤450MPa		 130 .003
N Aluminum Alloy - 200 .002
S Hardened steel - 65

.0015

Special Application Notes:
Pilot Drill
  • For safety and success, always pre-drill the hole with a pilot drill. This is especially true for drilling small sizes less than .078" [2mm].
  • Minimum coolant pressure = 800psi (5.5 MPa).
  • Coolant must have Extreme pressure (EP) Additives.
  • Positive displacement type coolant pump is required.
  • Coolant filter must be less than 5 microns. Fine filtration is necessary to prevent blockage of the Oil Holes.