Coated Carbide Drills for Steel & Cast Iron MDH Series
HF Coat D TiAlCrSi-based super multi-layered coating provides excellent wear resistance and thermal resistance Tough TiAlB-based coating is employed on the carbide substrate to improve coating strength and fracture resistance New Grade ACH70
Super multi-layered TiAlCrSi Hardness HV: 46GPa Starting Temperature for Oxidization: 1,100°C TiAlB-based toughness layer
Balances wear and fracture resistance
Unprecedented high-efficiency drilling D High-efficiency drilling delivers increased production capacity and yield Efficiency Comparison in Steel Drilling (Diameter: ø 8mm / ø.3150”)
P
.0197
MDH Series
.0157
.0118
Conventional Tool
.0079
.0039
Low
400
330
465
130
200
265
Cutting Speed vc (SFM)
Efficiency Comparison in Cast Iron Drilling ( Diameter: ø 8mm / ø.3150” )
K
.0236
MDH Series
.0197
.0157
.0118
Conventional Tool
.0079
.0039
Low
400
130
200
265
330
465
Cutting Speed vc (SFM)
3
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