New Tungaloy PVD Coated Grades for Stainless Steel Turning

1 March 2012

For medium to high speed turning of stainless steel, Tungaloy has now launched its new AH600 Series with SF, SM and SH chipbreakers. The new PVD coated AH600 grade offers exceptional wear and edge chipping resistance that is far superior to competitor grades when conducting high speed machining.
The new AH600 Series is available with both AH630 and AH645 grades that have been designed specifically for high performance turning.

The AH630 is recommended for general turning applications with a technological balance of fracture and wear resistance. This versatile grade is ideal for stainless steel and particularly austenite stainless machining with its outstanding resistance to edge chipping and adhesion strength.

With Tungaloy's special “PremiumTec” surface technology, the new AH600 Series has a high level of resistance to adhesion and notch wear. The new SF and SH chipbreaker inserts are suitable for finishing and roughing operations respectively. Tungaloy is currently supplying the SM chipbreaker for medium turning applications.

The new SF type chipbreaker for finishing has a large rake angle to reduce cutting forces and the size of the chip contact area. This feature lowers cutting forces and chip adhesion on the rake face; considerably improving tool life and surface finishes. The SF chipbreaker has a well designed inclination that further enhances the chip control. These features offer outstanding chip control when machining at small depths of cut at high feed rates. The unique cutting edge reduces the cutting forces whilst preventing burring.

For roughing, Tungaloy has developed the SH type chipbreaker. With a well developed negative land, it improves the strength of the cutting edge. In addition, the innovative chipbreaker geometry provides low cutting forces, when rough and interrupted machining. Suitable for a wide range of cutting depths, the SH type chipbreaker is the best choice for rough machining with its outstanding fracture resistance and extremely tough cutting edge.
The all new AH600 Series with SF, SM and SH chipbreakers is available in CNMG, DNMG, SNMG, TNMG, VNMG and WNMG designations with corner radius options including 0.4, 0.8, 1.2, 1.6mm dependent upon the selected insert.