• Ultra-fine carbide grain<0.6um with 12% Co
• TIALSIN coating, HIPIMS process
• End Teeth Unequal Angle: 88° / 92°
• Unequal helix angle: 35° / 37°
• Negative Rake angle (0°~-5° )
• Designed for mold steel machining up to HRC60
• Ultra-fine carbide grain<0.6um with 12% Co
• TIALSIN coating, HIPIMS process
• End Teeth Unequal Angle: 88° / 92°
• Unequal helix angle: 35° / 37°
• Negative Rake angle (0°~-5° )
• Designed for mold steel machining up to HRC60





UEX 4 flutes carbide square end mill is specially developed for mold steel machining up to HRC60. It is suitable for common mold and die steels such as P20, H13, and S136, SDK61 and performs well in slotting, side milling, shoulder machining, semi-finishing, and finishing.
Compared with general-purpose end mills, UEX series tools are optimized for the cutting characteristics of mold steel. The square end geometry makes this tool especially suitable for flat surfaces, side walls, slots, shoulders, and step faces where sharp corners, stable cutting, and dimensional consistency are required.
With ultra-fine carbide substrate, advanced coating technology, and anti-vibration flute design, this tool helps improve machining stability, surface quality, and tool life in mold machining applications.
| Premium Carbide Substrate TIALSIN Coating with HIPIMS Process high cutting temperature and heavy cutting load. Unequal End Tooth Spacing finishing. Unequal Helix Design machining. Optimized Rake Angle strength and maintain cutting stability in mold steel machining. |
UEX 4 flutes carbide square end mill is specially designed for mold steel machining up to HRC60. It is suitable for a wide range of mold and die steels commonly used in tooling and mold manufacturing, including P20, H13, S136,SDK61,and other pre-hardened or hardened mold steels within the recommended hardness range.

This tool is especially suitable for the following machining applications:
- Slotting
- Side milling
- Shoulder machining
- Step face machining
- Flat surface finishing
- Semi-finishing of mold components
- Finishing of mold cavities and side walls
For mold steel machining, customers usually need stable cutting, clean corners, reliable tool life, and consistent surface quality. UEX series square end mills are developed to meet these requirements through optimized carbide substrate, coating performance, and anti-vibration geometry.
If the machining task focuses on slots, flat surfaces, side walls, and shoulder features in mold steel, this square end mill is a practical and reliable choice.

Dohre CNC pays close attention to edge preparation, dimensional consistency, and inspection standards in mold steel machining applications. UEX series cabide end mills are produced under strict control to ensure stable cutting performance, consistent edge quality, and reliable batch accuracy.
We use a fluid sandblasting passivation process to greatly reduce burrs on the cutting edge and improve the surface finish of machined parts. This helps the tool achieve more stable cutting performance in mold steel semi-finishing and finishing applications.
The cutting edges are treated by a fully automatic passivation machine with rubber-bonded diamond abrasive polishing. This process helps ensure edge consistency across all tools, and the passivation value can be controlled within ±3μm.
Profile measurement is carried out using German Walter HELICHECK PLUS equipment, together with 150× optical inspection and 300× high-definition appearance inspection. This helps ensure stable tool geometry, reliable cutting edge quality, and consistent batch production.
UEX series end mills are produced on German Walter 5-axis high-precision grinding machines. This helps maintain cutting edge sharpness and dimensional accuracy, making cutting smoother and more stable in mold steel machining.
Q1: What materials is this UEX square end mill suitable for?
A1: It is specially developed for mold steel machining up to HRC60, including common mold and die steels such as P20, H13, and S136.
Q2: What is the main advantage of a square end mill in mold steel machining?
A2: A square end mill is especially suitable for slotting, side milling, shoulder machining, and flat surface finishing. It is the preferred choice when sharp corners and straight wall features are required.
Q3: Is this tool suitable for semi-finishing and finishing?
A3: Yes. This UEX 4 flutes carbide square end mill is especially suitable for semi-finishing and finishing of mold steel components where cutting stability and surface quality are important.
Q4: Why is unequal helix geometry important?
A4: The unequal helix design helps reduce vibration and improve chip evacuation, which supports better machining stability, better surface finish, and more consistent tool life.
Q5: Can Dohre CNC provide customized UEX mold steel end mills?
A5: Yes. Dohre CNC can provide custom solutions based on tool diameter, cutting length, overall length, and other geometry requirements for different mold steel applications.
Q6: Need a reliable carbide square end mill for mold steel machining?
A6: Contact Dohre CNC for standard and custom UEX end mill solutions for slotting, side milling, semi-finishing, and finishing.
Need a reliable carbide square end mill for mold steel machining?
Contact Dohre CNC for standard and custom UEX end mill solutions for slotting, side milling, semi-finishing, and finishing
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