TaeguTec CCMT060204MT TT8020 | PVD Carbide Insert for Stainless Steel
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TaeguTec CCMT060204MT TT8020
The Ultimate Toughness Grade for Interrupted Stainless Steel Machining
Product Overview
"Which insert grade is most reliable for interrupted cuts in stainless steel or when machining under unstable, low-rigidity conditions?"
The TaeguTec CCMT060204MT TT8020 is an 80° rhombic insert engineered for ISO M (Stainless Steel) and ISO S (Super Alloys). Unlike high-speed finishing grades, the TT8020 PVD coating is optimized for maximum edge toughness and adhesion resistance. The MT chipbreaker (Medium Turning) features a reinforced cutting edge that excels at breaking gummy chips while withstanding mechanical shocks. This makes it the go-to solution for machining 304/316 stainless steel when the cut is not continuous or the tool overhang is long.
Key Features
Specialized multi-layer PVD coating designed to prevent chipping and flank wear in difficult conditions.
A robust land design that balances sharpness with the strength needed for interrupted turning passes.
Substrate formulated to stop built-up edge (BUE), ensuring consistent dimensions in gummy stainless alloys.
Technical Specifications
ISO Code Breakdown: CCMT060204MT
80° Rhom.
7° Relief
Tolerance
Hole/Sint.
6.4mm L
2.38mm S
0.4mm Rad.
Chipbreaker
| Unit System | Model Number | IC (Inscribed Circle) | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CCMT060204MT | 6.35 mm | 0.4 mm |
| Imperial (ANSI) | CCMT21.51MT | 0.250" | 0.016" |
Recommended Cutting Parameters
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Stainless Steel (M) | 60 - 150 m/min | 0.08 - 0.20 mm/rev |
| Super Alloys (S) | 25 - 60 m/min | 0.08 - 0.15 mm/rev |
Compatible Holders
This insert is designed for precision SCLCR/L 06 external holders and S-SCLCR/L 06 boring bars.
Product Applications
- Interrupted turning of stainless steel shafts and valve components.
- Boring operations in stainless steel where vibration is a concern.
- Machining of aerospace fasteners and small fittings in Inconel.
- General job-shop work involving a wide variety of stainless grades.
TaeguTec Grade Comparison (Stainless Steel)
| Grade | Coating | Application Strategy |
|---|---|---|
| TT8020 (PVD) | Multi-layer PVD | Toughness: Interrupted cuts and unstable setups. |
| TT7015 (PVD) | TiAlN PVD | Speed: High-speed finishing in stable conditions. |
Why Choose TaeguTec?
TaeguTec, as part of the IMC Group, leads the industry in solving the most difficult metal-cutting challenges. The TT8020 grade was developed specifically to address the instability of stainless steel machining. While other inserts chip under pressure, the TT8020’s substrate absorbs shock, maintaining a clean edge even during heavy interruptions. By choosing TaeguTec, you are utilizing South Korean precision engineering that focuses on reducing scrap rates and maximizing reliability in your production line.
Verified Global Feedback
"Finally, no more chipping!"
We had massive issues with 316 stainless interrupted cuts. TT8020 fixed it immediately. It’s incredibly tough.
— Precision Machining Co. (USA)"Hervorragend bei Vibrationen"
Stable performance in small internal boring where vibration used to kill our inserts. Very reliable grade.
— Werkzeugbau AG (Germany)"Versatile e Resistente"
Great tool life on stainless steel shafts. The MT chipbreaker works well across different depths of cut.
— Meccanica Italia (Italy)Frequently Asked Questions
1. Should I use TT8020 for continuous high-speed finishing?
For continuous high-speed finishing in stable setups, TT7015 will provide better wear resistance. Use TT8020 when toughness is the priority.
2. Can this grade be used on Carbon Steel?
Yes, it is excellent for tough or interrupted cuts in steel, but for general steel turning, TT8115/TT8125 are more productive.
Need Help With taegutec Inserts?
Looking for a taegutec equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This taegutec 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.