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improved strength and wear resistance to carbide
grades, enabling higher productivity.

In CVD coatings, due to the difference in thermal
expansion coefficients between the substrate
and the coating layers, internal tensile stresses
are produced. Also, PVD coatings feature
surface droplets. These factors negatively affect
a coating and therefore shorten insert tool life.
Applying SUMOTEC post-coating technologies
considerably reduces and even removes these
unwanted defects and results in increasing the
tool life of the grade and greater productivity.
(fig.4 & fig.5)

Continuous developments in carbide insert
technology have opened several areas of progress.
Advanced methods of pressing and sintering,
coating processes, post-coating treatments, new
options for surface treatment
and the optimization of cutting geometry result
in the manufacturing of indexable inserts that
meet the machining requirements of today’s
metalworking industries.

ISCAR’s recently developed grade IC6025 is intended
specifically for turning materials related to ISO M
group (austenitic and duplex stainless steel). The
grade substrate is a multi-layered coating that features
post-coated treatment.The grade enabled significant
improvements in productivity related to turning
materials in the aerospace industry. (fig.6)

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