TaeguTec CNMG120404ML TT9225 | Professional Steel Turning Insert
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TaeguTec CNMG120404ML TT9225
The Versatile Steel Specialist: Advanced CVD Coating for High-Efficiency Machining
Product Overview
"Which carbide insert grade offers the best balance for general steel turning while maintaining edge sharpness and preventing crater wear?"
The TaeguTec CNMG120404ML TT9225 is an 80° rhombic turning insert designed for maximum reliability in ISO P (Steel) applications. The TT9225 CVD grade features a specialized multi-layer coating that provides excellent heat resistance and enhanced toughness, making it the "go-to" choice for a wide range of carbon and alloy steels. The ML (Medium-Light) chipbreaker is engineered with a positive rake angle, which significantly reduces cutting forces and heat generation, ensuring smooth chip evacuation even in gummy materials.
Key Features
A balanced substrate with advanced CVD coating designed to handle both continuous and light interrupted cuts in steel.
Sharp cutting action reduces machine vibration and prevents work-hardening, perfect for precision finishing.
The 0.4mm corner radius provides the high accuracy and clean Ra finish required for tight-tolerance components.
Technical Specifications
Decoding CNMG120404ML
80° Rhom
0° Relief
Tolerance
Clamping
12.7mm IC
4.76mm S
0.4mm RE
Med-Light
| Unit System | Designation | I.C. Size | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CNMG120404ML | 12.7 mm | 0.4 mm |
| Imperial (ANSI) | CNMG431ML | 0.500" | 0.016" |
Recommended Cutting Parameters (ISO P)
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon Steel (Low Alloy) | 180 - 350 m/min | 0.10 - 0.30 mm/rev |
| Alloy Steel (Hardened) | 140 - 280 m/min | 0.08 - 0.25 mm/rev |
Recommended Holders
Fits all standard DCLNR/L 12, PCLNR/L 12, and MCLNR/L 12 toolholders.
Product Applications
- Medium to light turning of carbon steel and mild steel components.
- Machining of alloy steel shafts and gears with light finishing requirements.
- Operations on CNC lathes requiring stable tool life and excellent chip control.
- Ideal for mass production where consistency in ISO P materials is vital.
TaeguTec Grade Comparison (Steel)
| Grade Name | Core Strength | Primary Application |
|---|---|---|
| TT9225 (CVD) | Balanced Toughness | General Purpose: The workhorse for steel. |
| TT9215 (CVD) | Wear Resistance | High Speed: Finishing at higher velocities. |
Why Choose TaeguTec?
A global leader in industrial tooling, TaeguTec is part of the IMC Group, providing premium solutions for modern manufacturing. The TT9225 series is the result of years of metallurgical research, offering the reliability needed for professional CNC workshops. By selecting TaeguTec, you invest in high-performance consistency that reduces downtime and delivers the lowest cost-per-cut in the industry.
Verified Global Feedback
"Reliable and Sharp"
We use these on 4140 steel. The ML chipbreaker keeps the heat down and the finish is excellent even on lighter lathes.
— Precision CNC (USA)"The Best General Steel Grade"
TT9225 is our standard now. It handles light interrupted cuts without chipping. Great tool life consistency.
— Machining Solutions (Germany)"Stable Performance"
Consistent results over long shifts. The 0.4mm radius is very accurate for our finishing operations.
— Heavy Industrial (Japan)Frequently Asked Questions
1. Is TT9225 better than TT9235?
TT9225 is harder (better wear resistance), while TT9235 is tougher (better for heavy interrupted cuts). Choose TT9225 for most general turning.
2. Can I use this for Stainless Steel?
While it can handle some steels, we recommend our specialized ISO M grades (like TT8020) for the best results in stainless steel.
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.