The AH8000 insert series, which has been developed as part
of the TungTurn line from Wolverhampton- based Tungaloy UK Ltd (www.tungaloy.com/uk), is
said to offer high levels of performance when turning heat-resistant alloys.

Extended tool life is credited to the composition of the grade, which incorporates newly developed substrates, a multi-layered nano AlTiN coating with a high Al content, and Tungaloy’s proprietary PremiumTec surface technology.

According to the company, these characteristics result in an insert grade that is at least 20% harder than alternatives.

In addition, the bonding of the substrate has been configured to prevent notch wear and further enhance cutting performance.

Tungaloy says that under test conditions on a variety of Inconel, titanium and other aerospace alloys, AH8000 inserts more than quadrupled tool life, while reducing machining times.

Within the AH8000 series is the AH8005 grade for continuous machining at higher spindle speeds; also AH8015, which is said to be extremely hard and durable for interrupted-cutting applications.

As well as these two grade options, Tungaloy has developed its HRM chip-breaker for finish- to medium-turning applications, and the HRF breaker for finish-turning operations.

Adding to these negative-insert chip breakers, Tungaloy has also launched a positive-insert line with PSF, PSS and PS chip breakers.

The AH8000 series includes 35, 55 and 80deg rhombic inserts, square, triangular and trigon insert (90, 60 and 80deg), and a round insert range.