Mitsubishi SNMG120404-MA UC5115 Turning Insert | Cast Iron Finishing
Price shown is a starting point. Contact us for a precise quote based on your requirements.
SNMG120404-MA UC5115
Mitsubishi Materials | The Precision Standard for Cast Iron Machining
The Mitsubishi SNMG120404-MA UC5115 is a high-stability indexable turning insert designed specifically for cast iron finishing and medium cutting. Utilizing the specialized UC5115 CVD coating, this insert excels in the machining of gray cast iron (FC) and ductile iron (FCD). With its precise 0.4mm corner radius and MA chipbreaker, it provides the ultimate solution for operators requiring high dimensional accuracy and superior surface finish in challenging cast materials.
Packaging: 100% Genuine Mitsubishi | Box of 10 Inserts
ISO Designation Decoded
Square 90°
0° Relief
M-Class Tol.
Double Sided
12.7mm Size
4.76mm Thick
0.4mm Radius
Medium Chipbreaker
Technical Specifications
| Dimension | Metric (ISO) | Inch (ANSI) Equivalent |
|---|---|---|
| Model Name | SNMG120404-MA | SNMG 431-MA |
| Inscribed Circle ($IC$) | 12.7 mm | 0.500" (1/2") |
| Thickness ($S$) | 4.76 mm | 0.187" (3/16") |
| Corner Radius ($RE$) | 0.4 mm | 0.016" (1/64") |
UC5115 Grade Advantage
The UC5115 grade is Mitsubishi's specialized CVD coated carbide for ISO K15-K25 materials. It features a robust TiCN + Al2O3 coating structure that provides exceptional heat resistance and suppresses thermal cracking. This makes it the "stable workhorse" for interrupted turning or machining ductile iron where mechanical shock is frequent.
MA Precision Geometry
The MA chipbreaker is a versatile medium-cutting geometry that excels in chip control. When paired with a 0.4mm radius, it provides lower cutting resistance, making it ideal for thin-walled parts or finishing passes. This geometry prevents chip entanglement and preserves the quality of your CNC turning projects.
Recommended Cutting Parameters
Starting Values for Cast Iron (UC5115)
| Material Group | Cutting Speed ($v_c$) | Feed Rate ($f$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Gray Cast Iron (FC) | 150 - 350 m/min | 0.10 - 0.30 mm/rev | 0.5 - 3.0 mm |
| Ductile Cast Iron (FCD) | 120 - 250 m/min | 0.10 - 0.25 mm/rev | 0.5 - 2.5 mm |
HOLDER COMPATIBILITY
Compatible with industry-standard PSSNR/L, DSBNR/L, or MSKNR/L 90° turning tool holders.
Browse Tool Holders →
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.