Mitsubishi SCMT120408-MM VP15TF Carbide Insert | Genuine MMC
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SCMT120408-MM VP15TF
Mitsubishi Materials | Medium-Duty Miracle Grade Specialist
The Mitsubishi SCMT120408-MM VP15TF is a highly versatile indexable turning insert designed for medium-duty machining. Featuring the industry-leading VP15TF Miracle Grade PVD coating, this insert provides an exceptional balance between wear resistance and fracture toughness. The MM chipbreaker is specifically optimized for moderate depths of cut, ensuring stable chip control during stainless steel turning and alloy steel machining on CNC lathes.
Packaging: Box of 10 Inserts
ISO Designation Decoded
Square 90°
7° Relief
M-Class Tol.
Countersink
12.7mm Size
4.76mm Thick
0.8mm Radius
Medium-Cut
Technical Specifications
| Feature | Metric Designation | Inch (ANSI) Designation |
|---|---|---|
| Model Name | SCMT120408-MM | SCMT 432 MM |
| Inscribed Circle ($IC$) | 12.7 mm | 1/2" |
| Thickness ($S$) | 4.76 mm | 3/16" |
| Nose Radius ($R_e$) | 0.8 mm | 1/32" |
VP15TF Miracle Grade
The VP15TF grade is a proprietary PVD coated carbide developed for multi-purpose machining. It utilizes a high-adhesion Miracle coating that prevents built-up edge (BUE) and plastic deformation. This makes it the premier choice for precision machining in gummy materials like 300-series stainless steel and heat-resistant superalloys.
MM Chipbreaker Logic
The MM Chipbreaker (Medium-Cut) is designed with a balanced rake angle to provide edge strength for rougher surfaces while remaining sharp enough for surface finish requirements. It excels at breaking chips in the "medium" range of feed and depth, preventing chip entanglement during high-speed turning.
Recommended Cutting Parameters
General Application for Steel & Stainless (VP15TF)
| Material Group | Cutting Speed ($v_c$) | Feed Rate ($f$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Stainless Steel (SUS304) | 100 - 180 m/min | 0.12 - 0.35 mm/rev | 1.0 - 3.5 mm |
| Carbon/Alloy Steel | 140 - 260 m/min | 0.15 - 0.40 mm/rev | 1.0 - 4.5 mm |
COMPATIBLE TOOL HOLDERS
The SCMT1204 series is designed for Mitsubishi SSDCN or SSBCR/L external turning holders and heavy boring bars.
View 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.