Mitsubishi CCMW09T304 UC5115 Flat-Top Carbide Insert for Cast Iron (10pcs)
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CCMW09T304 UC5115
Cast Iron Specialist | Flat-Top Robust Edge | UC5115 CVD Performance
The Cast Iron Authority
UC5115 Grade (The K-Class Standard): UC5115 is Mitsubishi’s premier CVD (Chemical Vapor Deposition) grade for cast iron. It utilizes a thick alumina layer for incredible heat resistance. Since cast iron is highly abrasive, this grade provides a hard, protective shield that prevents "flanking" and crater wear, even during high-velocity machining.
CCMW Geometry (Flat-Top): The CCMW differs from the standard CCMT by having a flat rake face (no chipbreaker). This design is optimized for materials like Cast Iron, which produce short, crumbly chips that do not require mechanical breaking. The result is a much stronger cutting edge that can withstand the high-frequency impacts of abrasive sand inclusions or scale.
0.4mm Precision Radius: The 04 (1/64") radius ensures clean surface finishes and minimizes cutting pressure, making it ideal for both external turning and internal boring in cast iron housings.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CCMW09T304 | 9.525 mm | 3.97 mm | 0.40 mm |
| Imperial | CCMW32.51 | 3/8" | 5/32" | 0.0157" (1/64") |
Cast Iron Cutting Parameters
*UC5115 allows for high speeds in gray iron. For ductile iron, maintain consistent feed to avoid work hardening.
| Material Group | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Gray Cast Iron (GG25) | 150 - 400 m/min | 0.10 - 0.30 mm/r | 0.50 - 3.00 mm |
| Ductile Iron (GGG40) | 120 - 300 m/min | 0.10 - 0.25 mm/r | 0.50 - 2.50 mm |
Compatible Tool Holders
Maximum performance for SCLCR/L 09 series Turning Tools and Boring Bars:
Shop SCLCR 09 HoldersPro-Tip: CCMW vs. CCMT
CCMW (Flat Top): Best for Cast Iron and hardened steels. The edge is significantly stronger because it doesn't have the "dip" of a chipbreaker.
CCMT (With Chipbreaker): Only use for ductile materials like Steel or Stainless where long stringy chips need to be broken. If used on Cast Iron, the chipbreaker geometry often wears out faster than a flat-top edge.
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