Introduction
The document introduces a new product, high helix flute shape inserts, designed to improve the finish of machined surfaces significantly. These inserts are particularly effective in applications requiring high precision, such as finishing press dies made from FC and FCD materials, and can also be used with alloy steel up to 30 HRC.

Product Specifications
The inserts feature an S-shaped helix flute that enhances cutting performance and surface finish. The product is available in various sizes, with item codes ZDFG160-SF, ZDFG200-SF, ZDFG250-SF, and ZDFG300-SF, all of which are stocked items. The inserts are ATH coated, which contributes to their durability and performance.

Performance and Benefits
The high helix flute design reduces cutting force, improving the finished surface condition and accuracy. It also extends tool life by reducing impact shock during cutting. The new ATH10E coating further enhances performance, offering twice the tool life compared to conventional tools.

Recommended Cutting Conditions
The document provides detailed cutting conditions for different materials, including carbon steels, alloy steels, and cast iron. It specifies parameters such as cutting speed (vc), feed rate (vf), and maximum depth of cut (ap and ae) for various machining operations like finishing, semi-finishing, and high-speed processing.

Comparative Analysis
A comparison of cutting surfaces shows that the new ZDFG300-SF (ATH10E) insert achieves a surface roughness (Ry) of 4.85μm, compared to 6.51μm with conventional tools, indicating a superior finish.

Contact Information
The document lists contact details for Hitachi Tool's headquarters and various international offices, providing phone and fax numbers for customer inquiries and technical support.