Cutting tool specialist Sandvik Coromant has extended the range of application for its GC4330 and GC4340 steel milling grades.
Cutting tool specialist Sandvik Coromant has extended the range of application for its GC4330 and GC4340 steel milling grades.

Cutting tool specialist Sandvik Coromant says that it has extended the range of application for its GC4330 and GC4340 steel milling grades. They are now available for selection with the CoroMill 300 round-insert face and profile mill, the CoroMill 245 multi-purpose face milling cutter, and the CoroMill QD cutter, according to the company.

GC4330 and GC4340 feature a substrate, Inveio coating, hich featyres uni-directional crystal orientation in the alumina coating layer, and improved post-treatment technology.

‘GC4330 and GC4340 have been purpose-designed to overcome certain issues when machining steel components,’ said Karl Emil Holmström, product application manager. ‘For instance, some hard and abrasive steels can promote wear along the insert’s flank face, particularly at elevated speeds and longer time in cut. What’s more, machining in unstable conditions as a result of compromised fixturing or long overhang increases the risk of chipped inserts. A further risk is thermal fluctuation during machining which, especially in wet conditions, can lead to crack formation and sudden breakages.’

GC4330 is a medium-hard grade for roughing to semi-finish face milling, with the tough grade preferred for rough shoulder milling and groove milling. The grades are also suitbale for Sandvik Coromant’s CoroMill 360 face mill, CoroMill 419 high-feed mill, and LPMH-PM plunge-cutter inserts.

In addition, GC4330 is available for the CoroMill 365 face mill, while GC4340 can be applied to the CoroMill 216 ball-nose end mill and CoroMill 415 small-diameter high-feed face mill, along with the CoroMill QD cutter.

This story uses material from Sandvik Coromant, with editorial changes made by Materials Today. The views expressed in this article do not necessarily represent those of Elsevier.