Mitsubishi CCMW120408 HTI10 Uncoated Carbide Insert for Aluminum & Cast Iron
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CCMW120408 HTI10
Non-Ferrous Master | Uncoated Micro-Grain | Flat-Top Precision
HTI10 Grade & Flat-Top Geometry
HTI10 Grade (Uncoated Tungsten Carbide): HTI10 is a high-toughness, micro-grain uncoated carbide. It is specifically engineered for Aluminum alloys, Copper, Brass, and Gray Cast Iron. Because it is uncoated, the cutting edge remains exceptionally sharp, which is critical for preventing "smearing" in soft non-ferrous metals and ensuring a clean shear in abrasive cast irons.
CCMW Geometry (Flat-Top): The CCMW design features a flat rake face without a chipbreaker. This provides the most stable and rigid cutting edge possible. In non-ferrous machining, this helps maintain high-speed stability, while in cast iron, it prevents the edge chipping typically seen in grooved geometries.
0.8mm Radius for Stability: The 08 (1/32") radius is the industry standard for medium-duty turning. It offers excellent surface finish results while providing enough bulk to resist the heat generated during high-speed aluminum turning.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CCMW120408 | 12.7 mm | 4.76 mm | 0.80 mm |
| Imperial | CCMW432 | 1/2" | 3/16" | 0.0315" (1/32") |
Recommended Cutting Parameters
*For Aluminum, high-speed machining with flood coolant is recommended to prevent built-up edge.
| Material Group | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Aluminum Alloys | 300 - 800 m/min | 0.10 - 0.40 mm/r | 0.50 - 4.00 mm |
| Gray Cast Iron | 80 - 200 m/min | 0.15 - 0.45 mm/r | 1.00 - 4.50 mm |
Pro-Tip: HTI10 vs. Coated Grades
HTI10 (Uncoated): Essential for non-ferrous metals. The lack of coating allows the edge to be ground to a much higher sharpness, reducing the "stickiness" of aluminum.
UC5115 (Coated): Use for general cast iron where speed is high. However, never use coated steel grades on aluminum, as the chemical reaction will cause the metal to fuse to the insert.
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