PEX Series End mill for carbon steel
Square End Mill for Carbon Steel Machining up to HRC55 | PEX Series
Range reference: KVX-054
- workpiece material
- Steel
- application type
- Semi-Finishing; Roughing
- flute type
- Square
- Coating
- ALTIN Nano Composite Coating
• Solid carbide square end mill for carbon steel and general steel • Suitable for HRC55 and below materials • Designed for flat surface, slotting, shoulder, side milling, and step machining • Ultra-fine carbide substrate with 10% cobalt content • AlTiN nano composite coating for wear and heat resistance • 6° positive rake angle helps reduce cutting resistance • 35° helix angle supports smooth chip evacuation
Enquire about this tool →Technical data
| Cutting Diameter | Flute Length | Overall Length | Shank Diameter |
| 1 | 3 | 50 | 4 |
| 2 | 6 | 50 | 4 |
| 3 | 8 | 50 | 4 |
| 4 | 11 | 50 | 4 |
| 5 | 13 | 50 | 6 |
| 6 | 15 | 50 | 6 |
| 7 | 17 | 60 | 8 |
| 8 | 20 | 60 | 8 |
| 9 | 23 | 75 | 10 |
| 10 | 25 | 75 | 10 |
| 11 | 28 | 75 | 12 |
| 12 | 30 | 75 | 12 |
Additional technical data
| Machining Need | Why Choose PEX Square End Mill |
|---|---|
| Flat surface finishing | Supports stable flat surface quality |
| Bottom surface machining | Suitable for pocket bottoms and flat features |
| Side milling | Helps maintain straight side-wall accuracy |
| Shoulder milling | Suitable for clear shoulder and step transitions |
| Slotting | 35° helix supports smoother chip evacuation |
| Step machining | Square end geometry helps maintain accurate step profiles |
| General steel finishing | Suitable for carbon steel, alloy steel, and ordinary steel |
| Batch machining | Stable carbide and coating help reduce tool changes |
Technical notes
- KERNVEX PEX Series square end mill is a solid carbide end mill designed for carbon steel, alloy steel, cast iron, and general steel machining under HRC55 .
- As a square end mill, it is mainly used for flat surface finishing, bottom surface machining, side milling, shoulder milling, slotting, and step machining. It is a suitable choice when the workpiece requires a clean flat surface, accurate step profile, straight side wall, and stable dimensional control.
- With ultra-fine carbide, AlTiN nano composite coating, a 6° positive rake angle, and a 35° helix angle, the PEX square end mill helps reduce cutting resistance, improve chip evacuation, and maintain stable finishing performance in general steel machining.
- For stainless steel machining, a dedicated stainless steel end mill series such as TEX is usually more suitable. For HRC60+ hardened steel, HEX or CBN tools should be considered instead.
- Ultra-Fine Carbide for HRC55 and Below Materials
- The PEX square end mill is made from ultra-fine carbide with 10% cobalt content. This carbide substrate provides a balance of hardness, toughness, and wear resistance for carbon steel, alloy steel, cast iron, and general steel machining.
- For finishing and semi-finishing applications, stable carbide quality helps reduce edge wear, maintain dimensional consistency, and support longer tool life.
- AlTiN Nano Composite Coating The tool uses AlTiN nano composite coating to improve wear resistance and heat resistance during steel machining. This coating helps the cutting edge maintain better stability under high cutting temperature and continuous machining conditions.
- It is suitable for general steel machining, semi-dry machining, and finishing operations where tool wear control is important.
- Square End Geometry for Flat and Step Machining The square end design is suitable for flat surface finishing, bottom machining, step face machining, shoulder milling, side milling, and slotting.
- This geometry is especially useful when the workpiece requires:
- •Flat bottom surface
- •Clear step profile
- •Straight side wall
- •Sharp corner definition
- •Stable finishing surface
- •Accurate part dimension
- Compared with a ball nose end mill, the square end mill is more suitable for flat and straight surfaces. Compared with a corner radius end mill, it provides a sharper corner when clear edge definition is required.
- 6° Positive Rake Angle and 35° Helix Angle The 6° positive rake angle helps reduce cutting resistance and supports smoother cutting in steel machining. The 35° helix angle helps improve chip evacuation, reduce vibration, and maintain stable cutting performance.
- This design makes the tool suitable for finishing and semi-finishing operations where surface quality, cutting stability, and tool life are important.
- Stable Performance for General Steel Machining The combination of ultra-fine carbide, AlTiN nano coating, positive rake angle, and 35° helix angle helps the PEX square end mill perform reliably in HRC55 and below materials.
- Suitable materials include carbon steel, mild steel, alloy steel, cast iron, ordinary mold steel, and general steel parts.
- KERNVEX PEX solid carbide square end mills are suitable for general CNC machining, steel finishing, semi-finishing, and stable production machining under HRC55.
- Suitable workpiece materials include:
- •Tool steel under HRC55
- •Ordinary mold steel
- •General steel components
- Typical industries include mold and die machining, automotive parts machining, general machinery manufacturing, fixture machining, CNC job shops, and batch production of steel parts.
Technical illustrations and dimension data
