Mitsubishi TNMG220408-MA UE6020 | Heavy-Duty Steel Turning Insert
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TNMG220408-MA UE6020
Mitsubishi Materials | Heavy-Duty General Purpose Steel Turning
The Mitsubishi TNMG220408-MA UE6020 is a large-format CVD coated carbide insert engineered for high-efficiency turning of carbon and alloy steels. Utilizing the UE6020 grade, this insert provides an industry-leading balance of wear resistance and fracture toughness. As a critical long-tail industrial tool for large CNC lathes, the MA chipbreaker ensures smooth medium cutting and reliable chip control even on abrasive steel surfaces.
P-Class Steel Specialist | Size 22 Robustness | CVD Coated
Technical Code Identification
Triangular Shape
0° Relief Angle
M-Class Tolerance
Cylindrical Hole
22mm Edge Length
4.76mm Thickness
0.8mm Radius
Medium Breaker
Metric (ISO) vs Inch (ANSI) Reference
| Feature | ISO (Metric) Model | ANSI (Inch) Equivalent |
|---|---|---|
| Model ID | TNMG220408-MA | TNMG 432 MA |
| Inscribed Circle (IC) | 12.7 mm | 0.500" |
| Nose Radius (RE) | 0.8 mm | 0.031" |
UE6020 Grade Technology
The UE6020 grade is Mitsubishi's premier solution for general-purpose steel turning. This CVD coated carbide features a unique layer structure that resists cratering and flank wear, making it an excellent indexable turning insert for P25-P35 material groups.
MA Chipbreaker Geometry
The MA chipbreaker is designed specifically for medium cutting operations. It strikes a balance between edge sharpness and strength, preventing the "nesting" of chips. This ensures high-productivity CNC machining on both carbon and alloy steel parts.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed ($v_c$) | Feed per Rev ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Carbon Steel (S45C) | 150 - 300 m/min | 0.15 - 0.45 mm/rev | 1.0 - 5.0 mm |
| Alloy Steel (SCM440) | 120 - 250 m/min | 0.15 - 0.40 mm/rev | 1.0 - 4.5 mm |
MATCHING TOOL HOLDERS
Perfectly paired with MTJNR/L or WTJNR/L tool holders (Size 22).
View Size 22 Holders →
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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.