Mitsubishi SEMT13T3AGSN-JH MC5020 | Cast Iron Milling Insert
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SEMT13T3AGSN-JH MC5020
Mitsubishi Materials | Heavy-Duty Cast Iron Specialist
The Mitsubishi SEMT13T3AGSN-JH MC5020 is a premium indexable milling insert designed specifically for the most demanding cast iron machining environments. Utilizing the advanced MC5020 CVD coating, this insert thrives in high-speed operations where thermal heat is intense. The JH chipbreaker (Heavy-Duty type) features a reinforced edge to prevent chipping during interrupted cuts, making it the ultimate tool for CNC milling of gray and ductile iron components.
Packaging: Original MMC Box of 10 Inserts
ISO Designation Decoded
Square 90°
20° Relief
M-Class Tol.
With Hole
13.4mm Size
3.97mm Thick
Lead/Flat
Heavy CB
Technical Specifications
| Feature | Metric Designation | Inch (ANSI) Designation |
|---|---|---|
| Model Name | SEMT13T3AGSN-JH | SEMT 43 AGSN JH |
| 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 Logic
The MC5020 grade is a specialized CVD coating optimized for cast iron. It utilizes a thick Alumina (Al2O3) layer that provides a powerful thermal shield, allowing for high-speed milling while maintaining wear resistance. It is particularly effective at resisting crater wear in high-temperature dry machining environments where coolant is not used.
JH Chipbreaker Toughness
The JH Chipbreaker is Mitsubishi's "Heavy" geometry. It features a larger land and a reinforced cutting edge compared to the FT or JM breakers. This robust geometry is designed to survive heavy impact and interrupted cuts in rough cast iron surfaces, ensuring the surface finish remains consistent without premature edge failure.
Recommended Cutting Parameters
Optimized for Heavy-Duty Cast Iron (MC5020)
| Material Type | Cutting Speed ($v_c$) | Feed per Tooth ($f_z$) | Depth of Cut ($a_p$) |
|---|---|---|---|
| Gray Cast Iron (FC) | 150 - 400 m/min | 0.20 - 0.45 mm/t | Up to 6.0 mm |
| Ductile Cast Iron (FCD) | 130 - 280 m/min | 0.15 - 0.40 mm/t | Up to 5.0 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.