TaeguTec CCMT09T304MT TT8020 | PVD Turning Insert for Stainless Steel
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TaeguTec CCMT09T304MT TT8020
The Toughness Specialist for Interrupted Stainless Steel & HRSA Machining
Product Overview
"Which insert grade is most reliable for interrupted cuts in 304/316 stainless steel or when machining under unstable, low-rigidity lathe setups?"
The TaeguTec CCMT09T304MT TT8020 is an 80° rhombic turning insert engineered for ISO M (Stainless Steel) and ISO S (Heat Resistant Super Alloys). Featuring the high-performance TT8020 PVD coating, this grade is specifically designed to prevent chipping where other carbides fail. The MT chipbreaker (Medium Turning) provides a reinforced cutting edge that balances sharpness with the strength needed for interrupted passes, ensuring predictable chip control and high surface integrity in gummy materials.
Key Features
A specialized PVD grade that offers superior resistance to mechanical shock and thermal cracking.
Medium-Turning design reduces cutting forces while effectively evacuating long, stringy stainless chips.
Excellent adhesion properties prevent Built-Up Edge (BUE) on gummy stainless steel workpieces.
Technical Specifications
ISO Code Explanation: CCMT09T304MT
80° Rhom.
7° Relief
Tolerance
Hole/Sint.
9.7mm L
3.97mm S
0.4mm Rad.
Chipbreaker
| Unit System | Designation | Inscribed Circle (IC) | Thickness (S) |
|---|---|---|---|
| Metric (ISO) | CCMT09T304MT | 9.525 mm | 3.97 mm |
| Imperial (ANSI) | CCMT32.51MT | 0.375" | 0.156" |
Recommended Cutting Parameters
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Stainless Steel (M) | 70 - 160 m/min | 0.08 - 0.20 mm/rev |
| HRSA Super Alloys (S) | 30 - 65 m/min | 0.08 - 0.15 mm/rev |
Compatible Holders
This insert is designed for SCLCR/L 09 external toolholders and S-SCLCR/L 09 boring bars.
Product Applications
- Medium turning and finishing of stainless steel valve components.
- Interrupted cutting of aerospace fittings in Inconel or Titanium.
- Boring operations in medical-grade stainless steel shafts.
- General job-shop machining where material consistency varies.
TaeguTec Grade Comparison (ISO M)
| Grade | Coating | Performance Strategy |
|---|---|---|
| TT8020 (PVD) | High-Toughness PVD | Toughness: Best for interrupted cuts and vibration. |
| TT7015 (PVD) | TiAlN PVD | Speed: Optimized for high-speed stable finishing. |
Why Choose TaeguTec?
TaeguTec, a member of the IMC Group, is a global leader in high-performance metallurgy. The TT8020 grade is specifically engineered to handle the work-hardening and gummy characteristics of stainless steels. While other carbides suffer from thermal cracking and edge chipping, TaeguTec’s PVD technology maintains edge integrity through heavy mechanical shocks. Choosing TaeguTec means investing in South Korean precision that reduces cycle times and significantly lowers scrap rates in challenging materials.
Verified Global Feedback
"Fixed our chipping issues"
We had massive issues with interrupted cuts on 316 shafts. The TT8020 grade survived where others crumbled. Highly recommended.
— Precision Lathe (USA)"Hervorragend bei Edelstahl"
Very stable performance in small internal boring. The MT chipbreaker ensures the chips don't bird-nest.
— Fertigungstechnik GmbH (Germany)"Ottima durata dell'utensile"
Great life on Titanium parts. Even with light interruptions, the edge stays sharp and dimensions tight.
— Meccanica di Precisione (Italy)Frequently Asked Questions
1. Should I use TT8020 for dry machining?
For best results in stainless steel, high-pressure coolant is recommended to manage heat and prevent Built-Up Edge.
2. Can this grade be used on Carbon Steel?
Yes, but it is optimized for ISO M/S. For general steel turning, the TT8115/TT8125 grades will offer better tool life.
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.