2020 SPEAKING OF SUCCESS
Achieving optimum performance from
your cutting tools will inevitably lead to
higher productivity, greater cost savings
and, of course, increased pro tability. While
general-purpose grades will deliver exceptional
performance, being able to specify a grade
ideally suited to machining a particular material
will deliver signi cant advantages, especially on
more dif cult-to-machine materials. The turning
of stainless steel is a typical case in point,
whether the raw material is cast, forged or semi-
nished parts. The arrival of two new grades from
CERATIZIT ensures that metal removal will be
achieved in the most ef cient manner.
While CERATIZIT already had the wellestablished
CTPM125 grade for turning stainless
steel, which was a perfectly acceptable generalpurpose
grade, the need to improve metalcutting
performance drove the development of two new
grades: these being the more wear-resistant
CTCM120 and the tougher CTCM130. Both these
grades are enhanced by the application of the
latest Dragonskin coating, which protects the
insert with an extremely hard and indestructible
surface to guarantee high performance and
process-secure operation.
Development of these two new carbide
grades was focused on the most frequently
used stainless steels V2A (e.g. 1.4301) and
V4A (1.4545), with the aim to provide the user
with a wider selection of inserts to
seamlessly cover every application.
The inserts are available in a range
of ISO shapes, with both positive
and negative styles available with a
range of chipbreakers to suit most
turning situations from roughing to
nishing.
The new CTCM120 is a CVDcoated
highly wear-resistant cutting
material the development of which
enables much higher cutting data
on austenitic stainless steels while
generating a smooth cutting action
to enhance tool life. In many cases tool life has
doubled when compared to competitor inserts in
benchmark tests.
The long-standing and well-established
PVD-coated universal carbide grade CTPM125
has proved its worth over many years. This
grade earns its universal reputation thanks to
its well-balanced ratio between toughness and
elevated-temperature hardness that promises
and delivers high reliability when machining all
stainless steels.
When the turning application demands
toughness, for example in interrupted cuts,
the new CTCM130 carbide grade meets the
challenge. In these dif cult conditions, cutting
speeds often need to be reduced, especially
where machining conditions are unstable, the
performance attributes of CTCM130 facilitates
increased process security.
The complete range for turning austenitic
For more informations:cutting.tools/en/Dragonskin-quarter-page-UK.indd 1
There three geometries for negative indexable
inserts and two for positive inserts
stainless steels is characterised not just by the
precise alignment of the three grades but also
by the free selection of different chip breakers.
Depending on their application, customers
can choose from three geometries for negative
indexable inserts and two for positive inserts –
across all three cutting material grades.
As a result, CERATIZIT has seamlessly covered
all application ranges for machining austenitic
stainless steels.
In brief, when turning stainless steel, the
choices are: CTCM120 – Highly wear-resistant
grade for high cutting values. The high cutting
speed and longer service life increases
productivity; and CTCM130 – Tough grade for
interrupted cuts and dif cult conditions, offering
maximum process security and reduction in the
reject rate.
One of the many benchmark tests carried out
by CERATIZIT in the development of these grades
highlights the performance advantages of having
a dedicated insert grade for particular materials.
Machining 1.4301; X5CrNi18-10 material at a
surface speed (vc) of 160 m/min, feedrate (f) of
0.35 mm/rev and a depth of cut (ap) of between
1-3 mm, the CTCM120 grade achieved a tool life
of 16.5 minutes. This compares with 9.9 minutes
for the universal CTPM125 grade and to 8.8 and
7.7 minute tool life of competitor grades.
Find out more at https://cuttingtools.ceratizit.
com/gb/en.html
Ceratizit CTCM120 &
CTCM130 carbide grades
Ceratizit UK & Ireland
T: 0800 073 2073 F: 0800 073 2074
E: tony.pennington@ceratizit.com
W: www.ceratizit.com
CTCM inserts come in two grades: wear-resistant
CTCM120 and the tougher CTCM130. Both are
enhanced by the latest Dragonskin coating
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