Mitsubishi SEMT13T3AGSN-FT MC5020 Milling Insert | Genuine MMC
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SEMT13T3AGSN-FT MC5020
Mitsubishi Materials | High-Speed Cast Iron Milling Specialist
The Mitsubishi SEMT13T3AGSN-FT MC5020 is a heavy-duty indexable milling insert specifically engineered for high-efficiency machining of cast iron. Utilizing the MC5020 CVD coating technology, this insert is the gold standard for gray cast iron and ductile iron milling. The FT chipbreaker (Flat-Top type) is designed to maximize edge strength, making it the premier choice for high-speed milling where heat resistance and crater wear protection are critical for CNC machining productivity.
Packaging: Genuine Mitsubishi Box of 10 Inserts
ISO Designation Decoded
Square 90°
20° Relief
M-Class Tol.
With Hole
13.4mm Size
3.97mm Thick
Lead/Flat
Stable CB
Technical Specifications
| Feature | Metric Designation | Inch (ANSI) Designation |
|---|---|---|
| Model Name | SEMT13T3AGSN-FT | SEMT 43 AGSN FT |
| Inscribed Circle ($IC$) | 13.4 mm | 0.5276" |
| Thickness ($S$) | 3.97 mm | 5/32" (0.156") |
| Wiper Length ($BS$) | 2.0 mm | 0.079" |
MC5020 Grade Excellence
The MC5020 grade is a specialized CVD coated carbide developed by MMC Mitsubishi for high-speed cast iron milling. It features a thick Alumina (Al2O3) layer that provides industry-leading thermal insulation, preventing the insert from softening during high-temperature dry milling. This results in significantly longer tool life compared to conventional grades.
FT Chipbreaker Strength
The FT geometry (Flat-Top) is built for maximum edge strength. In cast iron machining, where materials can be abrasive and brittle, a sharp breaker can often chip. The FT design provides a robust land that resists impact during interrupted cuts, making it the most stable choice for heavy-duty face milling operations.
Recommended Cutting Parameters
Optimized for Gray and Ductile Cast Iron (MC5020)
| Material Type | Cutting Speed ($v_c$) | Feed per Tooth ($f_z$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Gray Cast Iron (FC) | 200 - 450 m/min | 0.15 - 0.40 mm/t | Up to 5.0 mm |
| Ductile Cast Iron (FCD) | 150 - 300 m/min | 0.12 - 0.35 mm/t | Up to 4.0 mm |
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.