TaeguTec CCMT09T308MT TT8020 | PVD Turning Insert for Stainless Steel
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TaeguTec CCMT09T308MT TT8020
The Toughest PVD Solution for Interrupted Stainless Steel & HRSA Turning
Product Overview
"Which insert grade provides the maximum edge security for interrupted cuts in 316 stainless steel or when machining parts with uneven surfaces?"
The TaeguTec CCMT09T308MT TT8020 is an 80° rhombic turning insert designed as the "insurance policy" for difficult ISO M (Stainless Steel) and ISO S (Heat Resistant Alloys) operations. While finishing grades often chip during interruptions, the TT8020 PVD coating utilizes a specialized sub-micron substrate with enhanced multi-layer adhesion to absorb mechanical shocks. The MT chipbreaker (Medium Turning) features a reinforced edge geometry that prevents built-up edge (BUE) and ensures stable chip breaking across varying depths of cut, even in gummy materials.
Key Features
A multi-layer PVD coating optimized for impact resistance and high-adhesion strength in stainless alloys.
Medium-Turning design that provides excellent chip control while maintaining high edge stability during shock loads.
Offers increased edge strength and superior surface finish overlap for efficient production cycles.
Technical Specifications
ISO Code Breakdown: CCMT09T308MT
80° Rhom.
7° Relief
Tolerance
Fixing
9.7mm L
3.97mm S
0.8mm Rad.
Chipbreaker
| Unit | Model Number | IC (Inscribed Circle) | Thickness (S) |
|---|---|---|---|
| Metric (ISO) | CCMT09T308MT | 9.525 mm | 3.97 mm |
| Imperial (ANSI) | CCMT32.52MT | 0.375" | 0.156" |
Recommended Cutting Parameters
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Stainless Steel (M) | 60 - 150 m/min | 0.10 - 0.25 mm/rev |
| Super Alloys (S) | 25 - 60 m/min | 0.08 - 0.18 mm/rev |
Compatible Holders
This insert is precision-matched for SCLCR/L 09 external toolholders and S-SCLCR/L 09 boring bars.
Product Applications
- Heavy interrupted turning of stainless steel valve stems and pump shafts.
- Machining of non-concentric aerospace components in Inconel.
- Turning of cast stainless steel housings with uneven scale.
- General job-shop machining involving a wide range of stainless grades (304, 316, 410).
TaeguTec Grade Benchmarking (ISO M)
| Grade | Primary Benefit | Condition |
|---|---|---|
| TT8020 (PVD) | Extreme Toughness | Interrupted cuts/Low rigidity |
| TT7015 (PVD) | High Speed/Speed | Continuous stable finishing |
Why Choose TaeguTec?
TaeguTec, as a member of the IMC Group, is at the forefront of high-performance metallurgy. The TT8020 grade was specifically developed to tackle the most unstable turning environments. While standard carbides crack under mechanical impact, TaeguTec’s multi-layered PVD technology absorbs the shock, keeping your production line running without unexpected tool failure. Choosing TaeguTec means investing in South Korean precision engineering that focuses on reducing your cost-per-part through extreme reliability.
Verified Global Feedback
"Reliable in rough cuts"
We switched to TT8020 for our interrupted stainless shaft turning. It’s the only grade that doesn't chip on the keyway cuts.
— Precision Eng (USA)"Hervorragende Standzeit"
Consistent results in 316Ti. Even with vibration, the edge stays intact. Very impressive toughness.
— Mechanische Werkstatt (Germany)"Ottimo per Inox"
Predictable wear and great chip control. We use it for all our non-stable stainless setups.
— Officina Meccanica (Italy)Frequently Asked Questions
1. Should I use TT8020 for high-speed continuous finishing?
If your setup is stable and the cut is continuous, TT7015 will offer higher wear resistance at higher speeds. Use TT8020 specifically when toughness is needed.
2. Can this be used on Titanium alloys?
Yes. It is an excellent choice for ISO S (Super Alloys) finishing where edge security is paramount.
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.