The new generation of milling grades

Six new ways to better productivity

“Sandvik Coromant brings more advanced technology to the industry in one year than other tooling companies do in 5 years.”

Our milling grades have always been great performers but developments in grade technology now mean we can offer you something even better and you can now achieve significant cost savings by upgrading.

Different operations require different gradients of toughness and wear resistance; we provide you with a chain of grades, all with different attributes, but working together as a team, providing you with a solution to every machining challenge.

We guarantee you’ll see the difference in component quality, output and cost savings.

Defined by their no compromise cutting performance this new insert generation of milling grades will without doubt take your milling to the max.

Milling grades that won't compromise on performance

The productivity promise

Productivity means different things to differ-ent people and with these new grades, there is something for everyone.

The no compromising attitude of the new milling grades is clearly reflected in the improvements we have made. They are more versatile, more secure, more efficient and provide a more optimized performance. Whichever way you look at it they will improve your competitive edge.

But what do all these common elements mean in real terms?

“Their optimized peformance gives the unique possibilites to increase productivity by either increasing feed and or speed or reducing down time.”

Management/ efficiency

Operator/ security

Purchase/

versatility

Production/

optimization

- Faster pay-back- Less work in progress- Reduced cost/component

- Reduced inventory- Less handling- Less storage charge

- Less down time- Increased machine utilization- Fast but safe production

- Less disturbances- Less stress- Reliable tool life- Larger application range

Improvements whichever way you look at it

Steel milling

With a patented technique for improved performance in the tough demanding opera-tions of steel milling, these grades give you the possibility to optimize your machining strategy according to yourproductivity needs.

No magic just focused R&D

PVD coating

PVD coated grades work best for you when you demand edgeline toughness e.g in work hardening materials, where there are vibra-tion problems and in re-cutting of chips. The coating also maintains the sharpness of the cutting edge and is therefore an excellent choice for machining materials that particu-larly require this.

or to put it another way coating and substrate the perfect partnership. One of the keys to the success of these new grades comes from their unique coatings.

CVD coating

CVD coated grades offer the best possibili-ties for you to increase your cutting speed and thereby optimise your productivity. It is the aluminium oxide coating here which protects the insert from heat allowing you to use this grade for milling with long engage-ment time.

PVD coating CVD coating

GC4220The CVD grade to maximize productivity with high metal removal rate.

Use in medium to rough milling at elevated temperatures created by high speed or hard die steels.

Fits all CoroMill tooling concepts, is great for unmanned production and a top per-former at higher speeds and feeds.

Secure and predictable enough to provide productivity improvements of between 20-30% on the current grade, GC4020, allowing you to take your milling to the max.

Optimizer

A productivity booster over GC4230 with-standing higher speeds and feeds.

Productivity choice in medium and heavy face milling (fz>0.3, Dc>80 mm).

Optimized for dry, but works well in wet too.

Better crater wear resistance compared to GC4230 in CM245 in large diameters.

Better comb crack resistance/chipping resist-ance toughness compared to GC4020 espe-cially in wet milling.

In shoulder milling with CoroMill 390 for large cutter diameters (63-125 mm) when crater wear resistance is crucial.

The new first choice for steel milling, second to none for all-round productivity.

GC4230

Versatile

Use in all CoroMill cutter concepts whether wet or dry machining.

It is the reliable first choice for face and pro-file milling with high demands on consistent performance in

- CoroMill 245

- CoroMill 200

- CoroMill 300

An optimizer for high productivity in CoroMill 390 applications for speed and security.

Efficient

This grade embraces the trends towards higher feeds and speeds - at least 10% with-out compromise.

A CVD coated grade, the low stress coating strengthens the edge line toughness providing bettercomb crack resist-ance and less built- up edge

Alumina Coating (Al2O3) acts as a strong barrieragainst elevatedtemperatures and chemical wear.

Secure

Excellent edge behaviour enables higher metal removal rates at higher speeds and consistent reliable machining.

Designed for larger diameters in stable con-ditions; high speed open milling, face and profile milling, shallow cavity and long cut-ting times.

Best choice when demands on wear resist-ance become a challenge.

Optimizer

Use GC4230 as an optimizer for GC4240 and GC1030.

- to maximize your speed in stable condi-tions for a higher metal removal rate.

An excellent back up when the wear resist-ance of grade GC4240 is not enough.

GC4240The best MT CVD grade when requiring extra toughness and high metal removal capability.

Perfect for complex components requiring high insert security for trouble free machin-ing.

Significantly extends tool life in wet milling.

First choice for face and shoulder milling with CoroMill 390 in stable conditions for high metal removal rate.

Secure

Secure choice in other CoroMill cutters

- where a problem solver is needed for difficult operations

- with stability problems

- with risk of chip jamming

- with wet machining operations

Security which gives you the confidence to increase your speeds and feeds and adds up to more money in your pocket.

GC1030A PVD coated grade designed primarily for carbon steels which offers a 20% improve-ment in toughness and 90% in wear resist-ance over grade GC1025 = more parts per edge.

Versatile

Excellent performance in carbon steels but even for heat resistant super alloys and hard materials S and H.

Wet and dry machining.

Optimized

Optimized for end milling, the first choice for smaller cutters diameter < 32 mm and in applications with long overhangs, vibrations, deep cavities, risk of chip jamming.

Even short engagements.

In unstable conditions GC1030 can improve your productivity by up to 30% over the old grade.

Secure

First choice for delicate operations, those of smaller cutting diameters where precision and accuracy count. Excellent edge line secu-rity provides improved wear resistance.

How to make the team work for you - face milling

Maximum chip removal rate condition. Improved wear resistance PD performance. High speed and feeds.

First choice in average conditions.

Predictable choice in difficult conditions.Larger diameters.

Edge line security with low cutting data. Smearing mate-rials. Low carbon steels.Adhesive wear. Built-up edge. Larger diameters.

Edge line toughness.Low speeds and feeds.

Optimize dry applications.

Dry and wet applications.

Edge/bulk toughness.

How to make the team work for you - end milling

Maximum chip removal rate when crater wear and PD resistance are crucial wear mechanism. Optimized dry applications.

Productivity choice, large engagements and high cutting data. Optimized dry applications.

First choice in good to average conditions and high cutting data. Wet and dry applications.

First choice in good to difficult conditions and high cutting data. Wet and dry applications.

GC3

22

0

Cast iron milling, times are changing

These two new grades GC3220 and GC1020 allow you to put your foot down and your feet up, with these high-speed grades, you can seriously reduce your milling costs, a cast iron guarantee.

The hard one, dependable durable, tough and hard for higher speeds and longer time in cut.

Superior wear resistance allows you to turn up the speed, 20%, faster than anything else available.

Optimum solution for dry machining grey cast iron.

Excellent edge line toughness provided by cutting edge CVD stressless coating.

Secure

Perfect in stable conditions; from shoulder to face milling, roughing to semi finishing in CoroMill cutters.

Especially suited to the demands of larger diameter cutters (Dc >32 mm) and large engagements (ae >25 mm).

When machining with long tools or bad clamping/weak components.

GC3220

GC1

02

0

Handles demanding surfaces with ease and sets a new benchmark for productive cast iron milling.

Efficient

Will exceed your expectations in

- all nodular cast iron milling with CoroMill cutters.

- all wet machining of both grey and nodular cast iron.

- all ISO K milling with smaller cutters (Dc < 32 mm).

Its superior toughness with strong PVD coating is unrivalled in the market place.

Your problem solver for tricky materials such as ADI (austempered ductile iron),

SiMo and CGI (compact graphite iron).

This tough guy will allow you to increase feed by 20%.

GC1020

Your Productivity Partner

Head office: AB Sandvik CoromantSE-811 81 Sandviken, Swedenwww.newinsertgeneration.comE-mail: info.coromant@sandvik.com

C-1140:531 ENG/01 Printed on recycleable paper. Printed in Sweden, AB Sandvikens Tryckeri. © AB Sandvik Coromant 2007.07