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Milling inserts and grades for cast iron

Choosing the right insert grades for cast iron milling has never been easier. Find the perfect insert grade for your cast iron milling operation here.

GC3330

Hard, CVD-coated grade with thick Inveio™ coating is designed for medium to rough milling of all types of cast iron in average to stable conditions, for wet and dry machining.

Benefits and features

  • Inveio™ coating enables high wear resistance and long tool life
  • Secure grade with predictable wear
  • Broad application area – same insert for many applications
  • First choice for gray cast iron and mixed ISO K applications

Find your grade

Our wide range of cast iron insert grades includes CVD-, PVD-coated and uncoated carbide grades and CBN-tipped and ceramic insert grades for various machining conditions. Use the information below to find the right grade for your production.

Stable conditions
Unstable conditions

Low heat

(Small cutters
and/or low vc, ae)

High heat

(Large cutters
and/or high vc, ae)

GC3330

Hard, CVD-coated grade with thick coating, designed for medium to rough milling of all cast iron in average to stable conditions, both dry and wet. First choice for gray cast iron and mixed ISO K applications.

View assortment

CoroMill® 331: High-quality grooving and parting off.

CoroMill® 345: First choice face milling cutters for high productivity.

CoroMill® 365: Face milling in cast iron and steel.

CoroMill® 390: Versatile shoulder milling and ramping cutters for mixed production.

CoroMill® 490: First choice for general and repeated shoulder milling.

See complete assortment

GC1020

Hard, PVD-coated grade with thin coating for light to rough finishing of nodular cast iron in dry and wet conditions and gray cast iron in wet and average to stable conditions. First choice for nodular cast iron and/or small diameter cutters.

View assortment

CoroMill® 331: High-quality grooving and parting off.

CoroMill® 345: First choice face milling cutters for high productivity.

CoroMill® 365: Face milling in cast iron and steel.

CoroMill® 390: Versatile shoulder milling and ramping cutters for mixed production.

CoroMill® 490: First choice for general and repeated shoulder milling.

See complete assortment

GC3220

Hard, CVD-coated grade with very thick coating designed for high cutting speeds in medium to rough gray cast milling applications with good stability in dry conditions.

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CoroMill® 245: Multi-purpose face milling cutters for mixed production.

CoroMill® 331: High-quality grooving and parting off.

CoroMill® 345: First choice face milling cutters for high productivity.

CoroMill® 490: First choice for general and repeated shoulder milling.

See complete assortment

GC3040

Medium-hard CVD grade with thick coating for tough and demanding medium to rough milling applications of gray cast iron in dry conditions.

View assortment

CoroMill® 245: Multi-purpose face milling cutters for mixed production.

CoroMill® 331: High-quality grooving and parting off.

CoroMill® 345: First choice face milling cutters for high productivity.

CoroMill® 390: Versatile shoulder milling and ramping cutters for mixed production.

CoroMill® 490: First choice for general and repeated shoulder milling.

See complete assortment

K20W

Hard, CVD-coated grade with thin coating for finishing to light rough milling of all cast iron in stable and wet conditions. Ideal for large diameter cutters.

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Auto Roughing: Extra-close pitch face milling cutter.

CoroMill® 345: First choice face milling cutters for high productivity.

CoroMill® 365: Face milling in cast iron and steel.

CoroMill® 425: Easily adjustable finish face milling.

CoroMill® 745: Multi-edge face milling cutter for best production economy in steel and cast iron.

See complete assortment

K20D

Hard, CVD-coated grade with very thick coating designed for high cutting speed in medium to rough gray cast iron milling applications with good stability in dry conditions.

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Auto Roughing: Extra-close pitch face milling cutter.

CoroMill® 365: Face milling in cast iron and steel.

CoroMill® 745: Multi-edge face milling cutter for best production economy in steel and cast iron.

See complete assortment

Complementary grades

View complementary grades

CB50

Hard, CBN-tipped grade for light roughing to finishing of gray cast iron in stable, dry conditions. Use when dimensional stability and long tool life are crucial.
View complete assortment

CC6190

Hard, silicon nitride ceramic grade for very high cutting speeds in light roughing to semi-finishing of gray cast iron in stable and dry conditions.
View complete assortment

GC1010

Very hard, PVD-coated grade with thin coating for finishing in very stable conditions. A harder complement to GC1020 in wet conditions.
View complete assortment

H13A

Hard, uncoated carbide grade for rough to finish milling with sharp cutting edges, at low speeds and in average to stable, dry and wet conditions.
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GC4340

Tough, CVD-coated grade with medium-thick coating, for use as a tougher complement to GC3040 when stability is poor, in dry and wet conditions.
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GC4330

Medium-hard, CVD-coated grade with medium-thick coating, for toughness-demanding, medium to rough milling applications of nodular cast iron in dry and wet conditions.
View complete assortment

K20M

Hard, CVD-coated grade with medium-thick coating, for medium to rough milling in various applications of all kinds of cast iron, mainly dry conditions.
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K15W

Hard, CVD-coated grade with thin coating for finishing of cast iron and bi-metal components, such as cast iron and aluminum, in stable and wet conditions. Use as a complement to K20W when a sharp edge is needed.
View complete assortment

Highlights

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