HC1/HW2Continuous machining of gray cast iron| Alumina ceramic (White ceramics)

First recommendation for finishing gray cast iron

High-speed performance is achievable with the thermally and chemically stable alumina ceramic blend

Effective machining at speeds up to Vc=~700m/min


  • Best grade for high-speed finishing
  • HC1 grade - best wear resistance
  • HW2 grade - outstanding fracture resistance

Tooling application

Gray cast iron
Finish Turning 

Grade characteristics

Cutting conditions

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Grade Material Operation type Machining Cutting speed (m/min) Feed(mm/rev) DOC(mm) Coolant
HC1 Gray cast iron Turning Finish turning of Gray cast iron 350 - 700 0.1 - 0.4 -2.0 DRY
HW2 Roughing to semi-interrupted finishing of gray cast
Roughing to finishing of cylinder liners
350 - 600

Gray cast iron finishing application

Special inserts for Poly V pulley machining

Case study

Disk brake
Material :
Cutting speed :
630 m/min
Feed :
0.3 mm/rev
0.5 mm
Coolant :

130 pcs / corner

Competitor's black ceramic

60 pcs / corner

HC1 doubled the tool life of the competitor's black ceramic.
Cylinder liner
Material :
Chilled iron
Cutting speed :
600 m/min
Feed :
0.32 mm/rev
3.0 mm
Coolant :

70 pcs / corner

Competitor's ceramic

30 pcs / corner

HW2 doubled the tool life and achieved superior surface finishes on the part compared to the competitor's insert.

Tool lineup

View Catalog Information

Please check product catalog for tooling lineup