4 Flute Internal R End Mill For Mold Steel Die Making High Precision CNC Tool

Price Negotiable

Price: Negotiable

MOQ: 3-10PCS

Delivery Time: 5-12 working days

Brand: AMG

Product Description

4 Flute Internal R End Mill For Mold Steel Die Making High Precision CNC Tool

Product Specifications

Name	4 Flute Internal R End Mill For Mold Steel
Coating	AlTiN/AlTiSiN coating
Application	P20 H13 D2 Mold Steel
Shank precision	h6
Material	Carbide
Inch Or Millimeter	All can be customized

Product Overview

Our 4-flute internal R end mill is engineered for precision mold and die manufacturing, featuring ultra-fine grain tungsten carbide and advanced geometry to deliver exceptional accuracy in steel machining. Designed with a corner radius to reduce stress concentrations, this tool provides superior edge strength while maintaining ±0.01mm tolerance in demanding CNC milling applications. Ideal for hardened tool steels (HRC 45-55), it combines high material removal rates with extended tool life.

Key Features

Premium Carbide Construction

0.5 μm micro-grain tungsten carbide (10% cobalt)
AlTiN/TiSiN coating options for enhanced wear resistance

Optimized 4-Flute Design

35° helix angle balances chip evacuation and cutting force
Corner radius (R0.5-R5.0mm) prevents edge chipping
Center-cutting capable for plunge milling

Precision Ground Geometry

Radial runout <0.005mm
Mirror-finish flutes (Ra 0.2μm) reduce friction
G2.5 dynamic balance for high-RPM stability

Material-Specific Performance

P20 (HRC 30-36): Optimized for cavity machining
H13 (HRC 48-52): Special edge prep for hardened steel
D2 (HRC 58-60): Coated versions available

Typical Applications

Injection Mold Manufacturing
- Core/cavity profiling in P20 steel
- Slideway machining in pre-hardened steels
Stamping Die Production
- Blanking punch contours in D2 steel
- Progressive die form features
Precision Engineering
- Turbine blade root forms
- Medical implant mold components