Korloy ONMX060608-MM PC6510

• Insert shape: ONMX series (octagonal insert with strong negative face)

• Size designation: 060608 (i.e., approx. 6.0 × 6.0 mm)

• Chip breaker: MM – Multi-purpose geometry for stable performance across varying conditions

• Grade: PC6510 – PVD coated for cast iron / ductile iron machining

• Application types: Milling (especially face, shoulder, slot) of cast iron/ductile iron, also applicable to interrupted cuts

• Benefits: Excellent surface finish, stable tool life (less deviation), high speed & feed capability, inhibited thermal cracking & chipping.

• Grade: PC6510 – A PVD coated grade developed specifically for multi-purpose machining of cast iron, delivering improved wear resistance, reduction of thermal crack, and excellent surface finish. 

• Geometry & design: Insert designation ONMX060608-MM indicates an insert of shape ONMX, size ~6.0 mm × 6.0 mm (60×60 in code), with chipbreaker MM (multi­purpose). For example the catalogue lists “100608 PNR-MM …” in the PC6510 family.
  
  Coating & surface treatment: The PC6510 grade features an optimized PVD coating and special surface treatment to inhibit build-up edge formation and thermal cracking — key to stable tool life and better results.
  
  Application range: Ideal for machining cast iron and ductile iron components, especially where consistent tool life and good surface finish are critical. For example the grade is described as a “universal grade for cast iron” in the KORLOY documentation.

• Machining benefits: The PC6510 grade has been shown to deliver ~25 % longer tool life versus competitor when machining automotive cast-iron components.

• Less downtime: Thanks to advanced coating and geometry, you spend less time changing inserts, more time cutting.

• Better surface finish: Ideal for demanding cast-iron parts (e.g., engine blocks, knuckles) where surface quality matters.

• High wear resistance & stability: Designed to handle the challenging chip-breaking behaviour of cast iron and reduce flank‐wear and thermal cracks.

• Cost-per-component drops: Longer insert life + stable performance = fewer inserts used, lower tooling cost, better productivity.

• Multi-purpose ease: One grade covers many cast iron operations, simplifying tooling inventory.

• Automotive — engine blocks, brake housings, knuckles and other cast-iron components

• Aerospace & Defence — cast or ductile iron structural components, ancillary parts

• Die & Mold — iron‐based molds, fixtures with cast iron/ductile iron components

• General Engineering & Heavy Equipment — cast iron housings, gearboxes, pump bodies, etc.

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