Mitsubishi SNMA120412 MC5015 Turning Insert | Cast Iron Specialist
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SNMA120412 MC5015
Mitsubishi Materials | The Productivity Benchmark for Cast Iron Turning
The Mitsubishi SNMA120412 MC5015 is a high-performance indexable turning insert specifically engineered for high-efficiency machining of cast iron. Utilizing the MC5015 CVD coating, this insert excels in high-speed turning of gray cast iron (FC) and ductile iron (FCD). The SNMA flat-top geometry is designed without a chipbreaker to provide maximum edge strength, making it the premier choice for heavy-duty roughing where tool life and fracture resistance are critical.
Packaging: Genuine Mitsubishi Box of 10 Inserts
ISO Designation Decoded
Square 90°
0° Relief
M-Class Tol.
Top Hole
12.7mm Size
4.76mm Thick
1.2mm Radius
Technical Specifications
| Feature | Metric Designation | Inch (ANSI) Designation |
|---|---|---|
| Model Name | SNMA120412 | SNMA 433 |
| Inscribed Circle ($IC$) | 12.7 mm | 0.500" (1/2") |
| Thickness ($S$) | 4.76 mm | 0.187" (3/16") |
| Corner Radius ($RE$) | 1.2 mm | 0.047" (3/64") |
MC5015 Grade Technology
The MC5015 grade is a specialized CVD coated carbide developed by MMC Mitsubishi specifically for the ISO K15 application range. It features a Nano-texture coating technology that offers exceptional thermal stability. This allows the insert to resist crater wear and plastic deformation during high-speed CNC turning, making it the ideal partner for high-volume automotive casting production.
SNMA Flat-Top Edge
The SNMA profile features a flat-top geometry (no chipbreaker groove). In cast iron machining, where chips are naturally short and abrasive, a chipbreaker is often unnecessary. By utilizing a flat-top design, the insert maximizes the cross-sectional strength of the cutting edge, effectively preventing chipping and fracture during interrupted cuts or heavy scaling on the workpiece surface.
Recommended Cutting Parameters
Optimized for Gray and Ductile Cast Iron (MC5015)
| Material Group | Cutting Speed ($v_c$) | Feed Rate ($f$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Gray Cast Iron (FC) | 150 - 450 m/min | 0.15 - 0.60 mm/rev | 1.0 - 5.0 mm |
| Ductile Iron (FCD) | 120 - 300 m/min | 0.15 - 0.50 mm/rev | 1.0 - 4.0 mm |
TOOL HOLDER COMPATIBILITY
Compatible with all standard PSSNR/L or DSBNR/L 90° turning tool holders.
Shop External Tool Holders →
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This Mitsubishi insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.