The HH(300) 2 Flute Ball Nose End Mill features 0.3 μm ultra-fine grain carbide and a high-performance TiSiN PVD coating. Designed for high-speed, dry and semi-dry machining of hardened steel up to 60 HRC, mold steel, titanium alloys and nickel-based superalloys.
The HH(300) 2 Flute Ball Nose End Mill is developed for high-speed machining of hardened and difficult-to-machine materials.
Its 0.3 μm ultra-fine grain carbide substrate provides a stable cutting edge, while the high-performance TiSiN PVD coating is designed for demanding thermal and wear conditions.
The coating offers high hardness and excellent high-temperature performance, with temperature resistance of approximately 1200°C.
This combination makes the HH(300) particularly suitable for hardened steel and mold steel up to 60 HRC, as well as titanium alloys and nickel-based superalloys.
Key Features
0.3 μm Ultra-Fine Grain Carbide
The HH(300) uses a 0.3 μm ultra-fine grain carbide substrate for a stable and wear-resistant cutting edge.
The fine-grain carbide is suitable for high-speed machining where edge stability is critical.
TiSiN PVD Coating for High-Temperature Cutting
The TiSiN composite PVD coating provides high coating hardness and strong resistance to elevated cutting temperatures.
With high-temperature performance of approximately 1200°C, it is designed for demanding machining conditions where conventional coatings may experience accelerated thermal wear.
Designed for Hardened Steel up to 60 HRC
The HH(300) is specifically suited to machining hardened steel and mold steel up to 60 HRC.
It is a strong choice for high-speed machining of hardened workpieces where cutting heat and edge wear need to be controlled.
Optimized for Dry and Semi-Dry Machining
Dry and semi-dry cutting can reduce or eliminate coolant use, but they also place greater demands on the cutting tool.
The HH(300) is designed for these conditions, making it suitable for high-speed machining where thermal stability is important.
Suitable for Difficult-to-Machine Alloys
The HH(300) can also be used for titanium alloys, nickel-based superalloys, and other difficult-to-machine materials.
Its coating and carbide substrate are designed for applications involving high cutting loads, heat generation, and demanding material conditions.
Machining Challenges the HH(300) Addresses
High Heat During Dry Cutting
Dry machining can significantly increase cutting temperature.
The TiSiN PVD coating provides high-temperature resistance to help maintain cutting performance under demanding thermal conditions.
Tool Wear in Hardened Steel
Hardened steel places high mechanical and thermal loads on the cutting edge.
The combination of ultra-fine grain carbide and TiSiN coating helps improve resistance to wear when machining materials up to 60 HRC.
Difficult Mold Steel Machining
Mold steel often requires stable high-speed cutting and accurate contouring after hardening.
The HH(300) is designed for hardened mold steel applications where tool durability and cutting stability are important.
Difficult-to-Machine Superalloys
Titanium alloys and nickel-based superalloys generate significant heat and can accelerate tool wear.
The HH(300) provides a high-hardness coated solution for demanding high-speed machining applications.
Recommended Materials
The HH(300) is suitable for:
The recommended application should be determined according to the workpiece condition, hardness, machine capability, tool diameter, and cutting parameters.
Typical Applications
The HH(300) 2 Flute Ball Nose End Mill is suitable for:
The ball nose profile is particularly useful for 3D surfaces and complex contours, where smooth tool engagement is required.
Technical Specifications
| Specification | Details |
| Product Series | HH(300) |
| Tool Type | Ball Nose End Mill |
| Number of Flutes | 2 |
| Substrate | Ultra-Fine Grain Carbide |
| Carbide Grain Size | 0.3 μm |
| Coating | TiSiN Composite PVD Coating |
| High-Temperature Performance | Approx. 1200°C |
| Hardened Steel Hardness | Up to 60 HRC |
| Recommended Cutting | High-Speed, Dry, Semi-Dry |
| Suitable Materials | Hardened Steel, Mold Steel, Titanium Alloys, Nickel-Based Superalloys |
Why Choose HH(300)?
The HH(300) is designed specifically for machining conditions where high hardness and cutting temperature make tool selection more demanding.
Its 0.3 μm ultra-fine grain carbide and TiSiN coating provide a combination of edge stability, coating hardness, and thermal resistance for high-speed machining.
For hardened steel and mold steel up to 60 HRC, the HH(300) offers a dedicated solution for demanding CNC milling applications.
Custom Carbide Ball Nose End Mills
A standard ball nose end mill may not always match the geometry or machining conditions of a specific workpiece.
JimmyTool supports custom carbide ball nose end mills based on customer drawings, samples, and application requirements.
Custom solutions can be developed for tool dimensions, geometry, coating, carbide grade, and other specifications according to the machining application.
For a custom inquiry, provide the workpiece material, hardness, required tool dimensions, machining conditions, quantity, and drawing or sample where available.
FAQ
Can the HH(300) machine hardened steel up to 60 HRC?
Yes. The HH(300) is designed for machining hardened steel and mold steel with hardness up to 60 HRC.
Is the HH(300) suitable for dry machining?
Yes. The HH(300) is designed for high-speed dry and semi-dry machining, particularly in applications where coolant use is limited or undesirable.
Can it machine titanium and nickel-based superalloys?
Yes. The HH(300) is suitable for high-speed machining of titanium alloys, nickel-based superalloys, and other difficult-to-machine materials.
Can JimmyTool customize the HH(300)?
Yes. JimmyTool supports custom carbide ball nose end mills based on customer drawings, samples, or specific machining requirements.
Request a Quote for HH(300)
For pricing or application recommendations, provide the tool diameter, workpiece material, material hardness, machining method, cutting conditions, and required quantity.
For non-standard requirements, a drawing or sample can also be provided. JimmyTool can recommend a suitable HH(300) specification or develop a custom ball nose end mill for your application.
