Mitsubishi SNMG120408 UC5105 Turning Insert | Cast Iron Specialist
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SNMG120408 UC5105
Mitsubishi Materials | High-Speed Cast Iron Turning Authority
The Mitsubishi SNMG120408 UC5105 is a premium indexable turning insert specifically engineered for high-speed machining of cast iron. Utilizing the advanced UC5105 CVD coating, this insert is the benchmark for stability and wear resistance in gray cast iron (FC) and ductile iron (FCD) applications. Its robust substrate allows for maximum productivity in high-volume CNC turning, significantly reducing cycle times and tool change frequency.
Packaging: Original Mitsubishi Box of 10 Inserts
ISO Designation Decoded
Square 90°
0° Relief
M-Class Tol.
Double Sided
12.7mm Size
4.76mm Thick
0.8mm Radius
Technical Specifications
| Feature | Metric (ISO) | Inch (ANSI) Equivalent |
|---|---|---|
| Model Name | SNMG120408 | SNMG 432 |
| Inscribed Circle ($IC$) | 12.7 mm | 0.500" |
| Thickness ($S$) | 4.76 mm | 0.187" |
| Corner Radius ($RE$) | 0.8 mm | 0.031" |
UC5105 Grade Technology
The UC5105 grade is Mitsubishi's specialized CVD coated carbide for ISO K05-K15 applications. It features a thick, highly crystalline Al2O3 layer that provides exceptional heat resistance. This grade is optimized for high-speed continuous cutting of cast iron where maintaining a sharp edge and resisting crater wear are the primary requirements.
SNMG Double-Sided Geometry
The SNMG geometry offers eight cutting edges per insert, providing excellent cost-per-edge efficiency. The 0.8mm radius is the versatile industry standard for medium roughing to finishing. Mitsubishi's integrated chipbreaker ensures stable chip control, reducing the risk of chip wrapping on the workpiece in automatic lathe operations.
Recommended Cutting Parameters
Optimized for Cast Iron Turning (UC5105)
| Material Group | Cutting Speed ($v_c$) | Feed Rate ($f$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Gray Cast Iron (FC) | 200 - 550 m/min | 0.15 - 0.45 mm/rev | 1.0 - 4.5 mm |
| Ductile Cast Iron (FCD) | 150 - 350 m/min | 0.15 - 0.40 mm/rev | 1.0 - 4.0 mm |
HOLDER COMPATIBILITY
Pairs with standard PSSNR/L, DSBNR/L, or MSKNR/L 90° turning tool holders.
View Turning 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.