Mitsubishi SNMG120408-MA UC5115 Turning Insert | Cast Iron Specialist
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SNMG120408-MA UC5115
Mitsubishi Materials | The Industry Standard for Cast Iron Turning
The Mitsubishi SNMG120408-MA UC5115 is a premium indexable carbide insert engineered specifically for the high-efficiency machining of cast iron. Featuring the specialized UC5115 CVD coating, this insert provides an industry-leading balance of toughness and wear resistance. It is the primary recommendation for ISO K-class materials, including gray cast iron and ductile iron, delivering stable tool life in both continuous and slightly interrupted CNC turning operations.
Packaging: Genuine Mitsubishi Box of 10 Inserts
ISO Designation Decoded
Square 90°
0° Relief
M-Class Tol.
Hole/Double Sided
12.7mm Size
4.76mm Thick
0.8mm Radius
Chipbreaker
Technical Specifications
| Feature | Metric (ISO) | Inch (ANSI) Equivalent |
|---|---|---|
| Model Name | SNMG120408-MA | SNMG 432-MA |
| Inscribed Circle ($IC$) | 12.7 mm | 0.500" (1/2") |
| Thickness ($S$) | 4.76 mm | 0.187" (3/16") |
| Corner Radius ($RE$) | 0.8 mm | 0.031" (1/32") |
UC5115 Carbide Grade
The UC5115 grade features Mitsubishi's "All-Black Super-Even Coat." This advanced CVD coating (TiCN + Al2O3) is specifically tuned for the thermal and mechanical demands of cast iron turning. It significantly suppresses flank wear and cratering, allowing for high-speed machining while maintaining exceptional fracture resistance in ductile iron.
MA Medium Chipbreaker
The MA chipbreaker is a double-sided, flat-top geometry optimized for medium cutting. It features a positive land that ensures a sharp cutting action, reducing cutting forces and vibration. This geometry is ideal for general-purpose turning, providing excellent chip control over a wide range of feed rates in both steel and cast iron.
Recommended Cutting Parameters
Optimized for UC5115 Cast Iron Grade
| Workpiece Material | Cutting Speed ($v_c$) | Feed Rate ($f$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Gray Cast Iron (FC) | 150 - 350 m/min | 0.15 - 0.45 mm/rev | 1.0 - 4.0 mm |
| Ductile Cast Iron (FCD) | 120 - 250 m/min | 0.15 - 0.40 mm/rev | 1.0 - 3.5 mm |
COMPATIBLE TOOLING
Specifically designed for use with standard PSSNR/L, DSBNR/L, or MSKNR/L turning holders.
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