Mitsubishi SCMT120408 UC5115 Carbide Insert | Genuine MMC Japan
Price shown is a starting point. Contact us for a precise quote based on your requirements.
SCMT120408 UC5115
Mitsubishi Materials | The Cast Iron Heavy-Duty Specialist
The Mitsubishi SCMT120408 UC5115 is a robust indexable turning insert specifically engineered for high-efficiency cast iron turning. Featuring a 0.8mm nose radius for superior edge strength and the advanced UC5115 CVD coating, this insert thrives in high-speed, continuous cutting environments. It is the premier choice for CNC machining of grey and nodular cast iron components where wear resistance and long tool life are critical.
Model Specification Decoded
Square 90°
7° Relief Angle
M-Class Tolerance
Countersink Hole
12.7mm Size
4.76mm Thick
0.8mm Radius
Technical Specifications
| ANSI / Inch Designation | SCMT 432 |
|---|---|
| Grade Category | UC5115 (CVD Al2O3/TiCN Coated) |
| Inscribed Circle ($IC$) | 12.7 mm (1/2") |
| Thickness ($S$) | 4.76 mm (3/16") |
| Corner Radius ($R_e$) | 0.8 mm (1/32") |
UC5115 Material Science
The UC5115 grade is Mitsubishi's premium CVD solution for cast iron. It utilizes a multi-layered coating of Alumina ($Al_2O_3$) and Titanium Carbonitride (TiCN). This creates an extreme heat barrier, allowing for ultra-high cutting speeds without the risk of plastic deformation or crater wear, even when machining abrasive nodular iron.
Rugged 0.8mm Radius
The 0.8mm nose radius (08) offers significantly higher edge toughness than the 0.4mm variant. This allows for increased feed rates and provides a stable cutting edge that can handle slight interrupted cuts or skin inclusions in cast iron workpieces, ensuring a durable and predictable surface finish.
Recommended Cutting Parameters
Primary Application: Cast Iron (ISO K10 - K20)
| Material Type | Cutting Speed ($v_c$) | Feed Rate ($f$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Grey Cast Iron (FC250) | 150 - 380 m/min | 0.15 - 0.40 mm/rev | 1.0 - 4.0 mm |
| Nodular Cast Iron (FCD) | 120 - 250 m/min | 0.12 - 0.35 mm/rev | 0.8 - 3.0 mm |
HOLDER COMPATIBILITY
The SCMT1204 series is optimized for Mitsubishi SSDCN or SSBCR/L external tool holders and heavy-duty boring bars.
Shop Matching 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.