A high speed milling insert grade will improve productivity by 20-30% when medium to rough milling hard materials at elevated temperatures

Sandvik Coromant promises a 20-30% improvement in productivity against current grades with its latest GC4220. The grade has Sandvik’s latest developments in grade technology and an improved substrate and coating. Suitable for use in medium to rough milling at the elevated temperatures created by high-speed milling or hard materials, grade GC4220 provides security and predictability to maximise productivity and optimise high metal removal rate.

Sandvik said that the GC4220 grade guarantees better security at higher speeds and higher feed rates than GC4020 and offers good performance in unmanned production.

In a report to Manufacturingtalk, the company said that the special strength of GC4220 lies in its resistance to crater wear and plastic deformation, common wear problems when running at high speeds and feeds.

With its improved edge line strength and bulk toughness and its capacity to withstand increased cutting data, GC4220 is more predictable in dry milling, face and profile milling and ensures a good surface finish.

GC4220 is suitable for application in all CoroMill tooling concepts.

The introduction of grade GC4220 for steel milling continues Sandvik Coromant’s new line of grades released within its ‘New Insert Generation’ programme.

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