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Turning inserts and grades for steel

Whether you are looking for turning insert grades for unmanned production or custom-made components, we have reliable insert grades that offer predictable tool life, high machine utilization and the surface quality you need.

GC4325

​From finishing to roughing, this carbide grade is your first choice when turning steel. Coated with Inveio™ technology, it has a broad range of applications and is recommended for continuous and interrupted cuts.

Benefits and features

  • High edge line security
  • Long tool life at high cutting data
  • Predictability and security

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Steel turning grade GC4325 with Inveio™

How separate elements fit together for unbeatable strength, wear resistance and tool duration.


Steel turning endurance white paper

Learn how new innovation delivers best-practice solutions to daily machining challenges.

Finish strong with wiper inserts

Capable of turning at high feed rates, a wiper insert generates a smooth surface as it is fed along the workpiece.

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Introducing 4325 for steel turning

A breakthrough in material science, see how this grade sets new performance standards in the industry.

What’s new?

GC4335

Ideal for difficult surfaces, GC4335 offers better security and reliability when faced with heavy interruptions, vibration and unstable conditions. This grade features Inveio™ coating technology for the highest wear resistance.

Benefits

  • Secure insert grade means you get a reliable and secure performance every time.
  • Long tool life means you get higher machine utilization and higher production.
  • Less tool breakage means you can control costs and reduce the cost per component to increase profits.

Find your grade

Our steel insert grade assortment consists of CVD- and PVD-coated carbide grades for various machining conditions. Use the information below to find the right grade for your production.

Application area
Machining conditions: GoodAverageDifficult

GC4305

Recommended for stable conditions when a higher metal removal rate is needed in medium to rough steel applications.​​

CoroTurn® 107: First choice for external and internal machining of small and slender components.

T-Max® P: First choice for general turning, from small components to heavy machining.

See complete assortment

GC4315

CVD-coated carbide grade can be used for finishing to roughing in applications with continuous cut to light intermittence.

CoroTurn® 107: First choice for external and internal machining of small and slender components.

CoroTurn® 300: Good for chip control, offers over- and under-coolant and iLock™ technology.

CoroTurn® TR: First choice in external profiling with iLock™ technology.

T-Max® P: First choice for general turning, from small components to heavy machining.

See complete assortment

GC4325

First-choice CVD-coated grade for finishing to roughing of steel and steel castings in continuous and interrupted cuts at high metal removal rates.

CoroTurn® 107: First choice for external and internal machining of small and slender components.

CoroTurn® TR: First choice in external profiling, with iLock™ technology.

CoroTurn® 300: Good for chip control, offers over- and under-coolant and iLock™ technology.

T-Max® P: First choice for general turning, from small components to heavy machining.

See complete assortment

GC4335

GC4335 CVD-caoted carbide grade with Inveio coating technology for rough turning of steel and steel castings. Recommended for interrupted cuts and unfavourable conditions.

CoroTur​n® 107: First choice for external and internal machining of small and slender components.

T-Max® P: First choice for general turning, from small components to heavy machining.

See complete assortment

Complementary grades

CT5015

Uncoated cermet grade, resistant to built-up edge and plastic deformation. Use for finishing when high surface quality or low cutting force is required.

View complete assortment

GC1515

​Thin CVD-coated carbide grade, for finishing of low-carbon to low-alloy steels and other "sticky" steel alloys using medium to low cutting speed.​

View complete assortment

GC3005

​Wear-resistant and heat-resistant CVD-coated grade. Use for finishing and semi-finishing at high cutting speed in high-alloy steels.

View complete assortment

GC1525

​PVD-coated cermet. Wear resistant with edge toughness for finishing and semi-finishing of low-carbon and low-alloy steels. Good surface quality.

View complete ​assortment

Highlights

Low carbon steel machinability

Chip breaking and smearing (built-up edge) are common in low-carbon steels. Discover machining strategies to improve your turning operations.

Inveio™ – uni-directional crystal orientation

Tightly packed uni-directional crystals create a strong barrier towards the cutting zone and chip for improved crater and flank wear resistance.

Struggling to find the right tool for the job?

Let CoroPlus™ ToolGuide help you get quick and accurate tool recommendations – on all your devices!

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