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Milling inserts and grades for steel

GC4330 and GC4340

Grades GC4330 and GC4340 are CVD grades optimized for steel milling, offering substantially increased tool life and improved process security. GC4330 is first choice for roughing to semi-finish face milling, while GC4340 is first choice for rough shoulder milling and groove milling​.

Technical features

  • Inveio® coating for high wear resistance and long tool life
  • New substrate in grade GC4330 with well-controlled grain size distribution, which offers a more reliable and predictable tool behaviour.
  • More consistent tool life with more narrow edge rounding (ER) tolerance.
  • Improved post treatment technology strengthens the insert by modifying its mechanical properties

Benefits

  • Increased tool life provides a reduced cost per component​
  • Improved process security ensures a predictable performance and less downtime​
  • High component quality


GC1130

For light roughing to finishing operations, steel milling insert GC1130 is highly reliable grade that provides superior performance in all machining conditions for various component features. GC1130 offers long tool life for a predictable and secure milling process.

Benefits and f​eatures​

  • Ensures secure machining with long and predictable tool life
  • High metal removal rates and high reliability, even in challenging conditions such as complex tool paths and deep cavities
  • Great performance in both dry and wet machining

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Steel milling with GC4330 and GC4340

Inveio® technology features tightly-packed uni-directional crystals, which create a strong barrier towards the cutting zone for maximum thermal protection. This has a significant effect on insert strength, wear resistance and tool life.

Performance results

Learn how the enhanced properties of GC1130 out performs other grades in customer workshops.

Steel milling grade GC1130

Get an in-depth look at the many uses of GC1130.

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Optimized for steel milling

Produced with Zertivo™, a unique PVD production technology, GC1130 increases the predictability and security of your milling process.

​Find your grade

Our steel insert grade assortment consists of CVD- and PVD-coated carbide grades and uncoated cermets for various machining conditions.

Stable conditions
Unstable conditions
  Low heat

(Small cutters
and/or low vc, ae)

High heat

(Large cutters
and/or high vc, ae)

GC1130

Hard, thin coated PVD-grade with Zertivo™ technology for various applications. Suitable from light roughing to finishing in average stability for wet and dry machining. Good choice for complex tool paths and sticky materials.

CoroMill® 200: Round-insert cutter for roughing in unstable conditions.

CoroMill® 210: High feed face and plunge milling.

CoroMill® 216: Ball nose end mill for rough and semi-finish profiling.

CoroMill® 245: Light-cutting face mill for heavy roughing and mirror finishing.

CoroMill® 300: Round-insert cutter for roughing to semi finishing in stable conditions.

CoroMill® 600: Versatile round-insert profile milling cutter.

CoroMill® 331: Multi-purpose side and face milling cutter.

CoroMill® 345: First choice for highly productive face milling.

CoroMill® 357: Multi-edge rough face milling cutter.

CoroMill® 365: Secure face milling in cast iron and steel.

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

CoroMill® 415: Small-diameter high feed face milling cutter.

CoroMill® 419: High-feed milling cutter.

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

CoroMill® 495: Versatile chamfer cutter.

CoroMill® QD: Deep and narrow grooving.​

See complete assortment

GC4330

Medium hard CVD-coated grade (medium to thick coating) designed for medium to rough milling applications in average cutting conditions for wet and dry machining.

CoroMill® 300: Face and profile milling cutters for roughing to semi-finishing in stable conditions.

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

See complete assortment

GC4340

Tough CVD-coated grade (medium thick coating) suited for tough and demanding medium to rough milling applications for wet and dry machining.

CoroMill®​ 300: ​Face and profile milling cutters for roughing to semi-finishing in stable conditions.

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

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

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

CoroMill® QD: Deep, narrow grooving and parting off.

See complete assortment

GC4220

Hard CVD-coated (thick coated) grade suitable for high cutting speeds in medium to rough milling application with good stability for dry machining.

CoroMill® 200: Face and profile milling cutters for roughing in unstable conditions.

CoroMill® 245: Multipurpose face milling cutters for mixed production.

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

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

CoroMill® 490: The first choice for general and repeated shoulder milling.​

See complete assortment

Complementary grades

GC1010

​Very hard PVD-coated with thin coating for finishing in very stable conditions and hardened materials for wet and dry machining.

View complete ​a​ssortment

CT530

Medium hard uncoated cermet grade for finishing applications at high cutting speeds for dry machining.

View complete assortment

GC2030

Medium hard PVD-coated grade with thin coating for sticky materials for wet and dry machining.

View complete assortment

GC2040

Tough CVD-coated grade (medium thick coating) for roughing in tough and demanding applications for wet and dry machining and good for mix material production.

View complete assortment

GC3040

​Medium hard CVD-coated (thick coating) grade which complements GC4230 in abrasive materials.

View complete assortment

M30B

​Tough CVD-coated (thin coated) grade for turbine blade machining under tough and demanding conditions at high cutting speeds for wet and dry machining.

View complete assortment

GC1025

Hard PVD-coated grade (thin coating) for light roughing to finishing in sticky materials for wet and dry machining.

View complete assortment

Highlights

Steel machinability

The machinability of steel varies, depending on the alloy elements, heat treatment and manufacturing process.

Hold tight

Learn how to make sure inserts seats are free from dirt or metal chips after machining.

Made for Milling

You make the components that shape the things around us. We create precision tools that are purposely #MadeforMilling.

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