Pramet Chip Breakers And Grades are resistant to crack formation.

Press Release Summary:

Suitable for productive machining of stainless steels, Pramet T7325 grade features functional gradient substrate and special MT-CVD coating. Offering high cutting strength and reduced built-up edge, grades support turning applications in stainless steel with NF1 and NF2 positive chip breakers. Ensuring high quality surface finishing, SF2 chip breaker performs fine turning whereas SF3 supports finishing operations.

Original Press Release:

New Inserts and Grades for Turning

Applications in steel and cast iron, high temperature alloys and stainless steel

Dormer Pramet launches new Pramet chip breakers and grades. The NF1 and NF2 positive chip breakers support turning applications in stainless steel while the FF2, FM2 and RM3 chip breakers support steel and cast iron. The SF2 and SF3 positive inserts are first choice for S-group materials and high performance alloys.

The NF1 is a universal chip breaker for fine finishing to medium machining, peripherally ground to provide a very good surface finish. The versatile NF2 chip breaker incorporates a small stabilizing T-Land and covers a wide range of applications from semi-finishing to light roughing.

The FF2 chip breaker has a positive rake angle and depth of cut from 0.01 inch for fine finishing applications in low carbon steels. The FM2 chip breaker is for finishing to medium machining and features a protective land suitable for continuous and interrupted operations. The highly resistant RM3 chip breaker is for roughing applications in steels & cast irons and suitable for unfavorable machining conditions.

The SF2 and SF3 positive inserts provide a highly secure and dependable option for turning applications for S-group materials and high performance alloys. The SF2 chip breaker is for fine turning at the lowest possible feeds while the SF3 chip breaker, with its positive inclined cutting edge, supports finishing operations. Especially effective when used on small and slender components, both inserts offer a sharp cutting edge with minimal radius. This promotes low cutting forces which, in turn, prevents work hardening and ensures a high quality surface finish.

Finishing off this new Pramet offering is the T7325 grade for productive machining of stainless steels. It has been developed to complement the existing T7335 grade which is recommended for use in unstable machining environments. Suitable for interrupted cutting, the latest T7325 grade features a functional gradient substrate and special MT-CVD coating. This combination offers high cutting strength, reduced built-up edge and resistance to the formation of cracks. As a result, the grade provides a high level of operational reliability, performance and tool life.

Learn more at or watch the new Pramet range in action on Dormer Pramet’s YouTube channel (

About Dormer Pramet: Dormer Pramet is your one-stop manufacturer for solid and indexable drilling, milling, threading and indexable turning tools for the general engineering sector. Market-leading brands include Precision Twist Drill (PTD), Union Butterfield (UB), Dormer and Pramet. With best-in-class training, support and logistics services, Dormer Pramet has become the reliable one-stop-shop for general purpose and multi-application cutting tools. Visit us at

Miriam Metcalfe

Marketing Manager

Dormer Pramet

2511 Technology Drive Suite 113/114

Elgin, IL 60124 USA

Office: +1 847-783-5713

Mobile: +1 630-488-6091

Fax: +1 847-783-5760

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