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 |
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This Mitsubishi insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.