Introduction
This document introduces high-performance tools designed for direct cutting and roughing of high-hardness steels, specifically using indexable tools in mold making and parts processing. It highlights the capabilities of the High Hard Radius Mill RH2P type and the Alpha High Hardness Radius Mill.

Specifications
The tools are suitable for steels with hardness ranging from 45 to 62 HRC, including carbon steel, alloy steel, stainless steel, tool steel, pre-hardened steel, and hardened steel. Various product codes and dimensions are provided for different tool sizes, including shank diameters and overall lengths. The JP4005 and JP4015 tools are specifically designed for these applications.

Features
The RH2P type tools feature high-accuracy grinding class inserts that enhance edge tip runout accuracy and have a special edge shape to suppress edge breakage in high-hardness steels.

Recommended Cutting Conditions
Detailed cutting conditions are provided, including cutting speed (vc), feed rate (f z), and depth of cut (ap, ae) for different tool diameters and flute numbers. Adjustments based on actual machining conditions are emphasized.

Technology and Material
The tools utilize JP4005 and JP4015 insert materials, prioritizing wear resistance and breakage resistance, with base material hardness specified as 92.8HRA for JP4005 and 92.1HRA for JP4015.

Safety and Usage Notes
Users are advised to use appropriate coolants, adjust cutting conditions based on specific machining needs, and ensure timely insert replacement to prevent tool damage. Safety measures include using protective covers and personal protective equipment. Commercial milling chucks or shrink-fit holders can be used, but interference may occur if the cutter diameter is smaller than the shank diameter.

Applications
The tools are suitable for mold making and parts processing, offering a new frontier for indexable tools in high-hardness steel machining.

Contact Information
Contact details for Hitachi Tool Engineering's offices in Japan, Europe, China, America, Thailand, and India are provided, along with various sales offices across Japan.

Conclusion
The document highlights the improved performance and tool life of the new RH2P type tools compared to conventional tools, focusing on efficiency and safety in high-hardness steel processing. For detailed specifications and further information, the document refers to the full-line catalog available on the Hitachi Tool website.