TaeguTec CCMT09T308MT TT9225 | High-Velocity CVD Stainless Steel Insert
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TaeguTec CCMT09T308MT TT9225
Master the Heat: High-Productivity CVD Turning for Stainless Steel Components
Product Overview
"Which insert grade provides the longest tool life and best surface integrity during high-speed continuous turning of austenitic stainless steels?"
The TaeguTec CCMT09T308MT TT9225 is a premium 80° rhombic insert engineered specifically for ISO M (Stainless Steel). Featuring TaeguTec’s advanced CVD coating technology, the TT9225 grade offers an unparalleled thermal barrier, allowing for aggressive cutting speeds (Vc) that PVD grades simply cannot match. The MT chipbreaker geometry is paired with a reinforced 0.8mm corner radius, providing excellent chip control and edge security, making it the ultimate solution for high-productivity finishing and medium turning in challenging stainless alloys.
Key Features
Thick Al2O3 layer ensures maximum resistance to crater wear and thermal deformation at high velocities.
The 0.8mm (032) corner radius provides the mechanical strength needed for light interrupted cuts and higher feed rates.
Optimized rake angle shears through gummy stainless materials, preventing built-up edge (BUE) and improving surface Ra.
Technical Specifications
ISO Code Breakdown: CCMT09T308MT
80° Rhom.
7° Relief
Tolerance
Fixing
9.7mm L
3.97mm S
0.8mm Rad.
Chipbreaker
| Unit System | Designation | IC (Inscribed Circle) | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CCMT09T308MT | 9.525 mm | 0.8 mm |
| Imperial (ANSI) | CCMT32.52MT | 0.375" | 0.031" |
Recommended Cutting Parameters
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Austenitic Stainless (304/316) | 150 - 280 m/min | 0.12 - 0.35 mm/rev |
| Duplex Stainless Steel | 80 - 150 m/min | 0.10 - 0.28 mm/rev |
Compatible Holders
This insert fits all standard SCLCR/L 09 external toolholders and S-SCLCR/L 09 boring bars.
Product Applications
- Medium turning of stainless steel valve bodies and fittings.
- Precision finishing of medical-grade stainless components.
- Mass production of automotive fuel injectors and shafts.
- Internal boring where the 0.8mm radius provides the best compromise between strength and vibration resistance.
TaeguTec Grade Comparison (Stainless Steel)
| Grade | Coating | Primary Focus |
|---|---|---|
| TT9225 (CVD) | Al2O3 CVD | Velocity: High-speed continuous turning. |
| TT5080 (PVD) | TiAlN PVD | Toughness: Interrupted cuts and small diameters. |
Why Choose TaeguTec?
TaeguTec, as part of the IMC Group, is a global leader in high-performance metallurgy. The TT9225 grade represents a major leap in stainless steel machining productivity. By selecting the CCMT09T308MT, you are choosing South Korean precision engineering that focuses on reducing cycle times and maximizing spindle uptime. Our TT9225 CVD technology provides the thermal protection required to push your machine tools to their limits, delivering consistent quality part after part.
Verified Global Feedback
"Productivity Boost"
We increased our cutting speed by 30% on 316 stainless shafts. The TT9225 grade heat resistance is legendary.
— Precision Machining Co. (USA)"Top Qualität"
Predictable wear and perfect surface Ra. The MT chipbreaker works great even at higher feed rates.
— Metallwerke GmbH (Germany)"Molto Affidabile"
A very reliable grade for mass production. We have significantly fewer tool changes per shift now.
— Meccanica di Precisione (Italy)Frequently Asked Questions
1. Is TT9225 better than PVD for 304 stainless?
For high-speed continuous turning, yes. The CVD coating handles the thermal load much better than PVD coatings.
2. What is the advantage of the 0.8mm radius?
The 0.8mm corner radius provides a stronger cutting edge and allows for higher feed rates compared to a 0.4mm radius, though it requires a more stable setup.
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.