Generally speaking, under the same condition, the smaller particles of tungsten carbide, the higher hardness of tungsten carbide, and the high wear resistance will be. However, the tungsten carbide with higher wear resistance can also be more brittle. So when we are choosing what type of tungsten carbide to use, we have to take its application into consideration.

GC4330 is a medium-hard grade for roughing to semi-finish face milling, while the GC4340 grade is for rough shoulder milling and groove milling. Both grades are also extended to the CoroMill 360 heavy-duty face mill, CoroMill 419 high-feed mill, and LPMH-PM plunge-cutter inserts. In addition, GC4330 is available for the CoroMill 365 high-security face mill, while GC4340 can be applied to the CoroMill 216 ball-nose end mill and CoroMill 415 small-diameter high-feed face mill.

The wear resistance of cemented carbide is determined by its grain size and cobalt content. The finer the grain size and the lower the cobalt content, the higher the hardness, and vice versa. Grinding cemented carbide can not only look at the hardness but also depends on the requirements of its use. Generally, it is recommended to use YW2 raw material for cutting cemented carbide. , but the toughness and hardness themselves conflict with each other, and the selection of YG-based fine-grained alloys can be considered.

Among the many design attributes of GC4330 and GC4340 is the optimized Inveio coating. Inveio is the technical breakthrough of uni-directional crystal orientation in the alumina coating layer that gives inserts a new level of wear resistance and tool life. Furthermore, the substrate of the grades delivers highly controlled grain size distribution for more reliable and predictable insert behaviour.

Different grades of tungsten carbide can be named according to different amounts of tungsten carbide powder and cobalt powder. Take the common grade as an example, YG8 means there is 8% of cobalt powder in tungsten carbide. So different choices of tungsten carbide grades vary from the working life. Tungsten carbide is made from tungsten carbide powder and cobalt powder as a bind, which is made by powder metallurgy.

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Tungsten carbide is also called cemented carbide, hard alloy, and tungsten alloy. With many advantages like high wear resistance, high hardness, and corrosion, tungsten carbide has shown many advantages in various fields. When we are applying tungsten carbide products, especially in a harsh environment, tungsten carbide needs to be extremely wear resistant. In this article, the main topic will be the wear resistance of tungsten carbide.

Following the successful introduction of its GC4330 and GC4340 steel milling grades, Sandvik Coromant is now extending the range of application for these advanced insert grades to additional milling concepts. The grades 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, which is optimized for deep and narrow grooving and parting off.

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As for which cemented carbide is very wear-resistant, in fact, it mainly depends on the application conditions. The very wear-resistant cemented carbide material may be more brittle, so it is not completely usable. Under the same conditions, generally speaking, the smaller the particles of tungsten steel, the higher the hardness and the more wear-resistant. If you say some kinds of data to choose from, for example, domestic data: YG3>YG6>YG8>YG15>YG20. The import data is divided into more details, there are V series, K series, and so on.

GC4330 and GC4340, which feature a specially developed substrate, Inveio coating and enhanced post-treatment technology, allow users to enjoy substantially increased tool life and process security. The extension of these grades to additional Sandvik Coromant milling concepts brings their advantages to even more machine shops looking to optimize the milling of steel workpieces.