Expansion of TungCut insert lineup with AH8005, AH7025, and AH6235 grades

Iwaki, Japan – Mar, 2026 – Tungaloy Corporation (President: Satoshi Kinoshita; Head Office: Iwaki City, Fukushima Prefecture) announces the expansion of its TungCut interchangeable insert tooling for grooving and parting operations. The lineup now includes inserts in the AH8005, AH7025, and AH6235 grades, featuring high wear resistance, versatility, and high toughness. This expansion enables greater machining efficiency and stable cutting performance.

Challenges and Trends

Grooving and parting-off operations are indispensable processes in the manufacturing of general machinery parts and automotive components. However, as workpiece materials become more diversified and the demand for higher productivity continues to grow, cutting tools are increasingly required to deliver longer tool life and more stable machining performance. In particular, managing tool wear under varying machining conditions and during continuous production poses a significant challenge, making the balance between productivity and cost a key issue. Under these circumstances, users are seeking solutions that provide highly reliable grades and economical tool operation.

Product Overview

TungCut is a high-rigidity tool series optimized for grooving and parting operations. Its unique clamping structure and high-precision inserts deliver stable tool life and superior surface quality. Even in high-feed face turning, it achieves both high efficiency and excellent surface finish, contributing to improved productivity.

Benefits and Features

Feature 1: Long Tool Life through Excellent Wear Resistance (AH8005)

– Exhibits outstanding wear resistance across a wide range of work materials, including heat-resistant alloys, stainless steels, and general steels.
– Maintains stable cutting performance even under high-speed and continuous cutting conditions.
– Extends tool life, reducing tool change frequency and improving overall productivity.

Feature 2: Versatility for a Wide Range of Machining Applications (AH7025)

– Suitable for various work materials, from heat-resistant alloys to general steels.
– Delivers stable performance even under varying cutting conditions such as light interrupted or composite machining.
– Covers multiple machining applications with a single grade, contributing to more efficient tool management.

Feature 3: Stable Interrupted Cutting Performance with High Toughness (AH6235)

– Enables stable cutting even with interrupted workpieces prone to fracture or chipping.
– Provides high reliability in parting-off operations and stainless steel machining.
– The combination of a tough substrate and optimized coating reduces machining troubles and supports stable operation.


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