TaeguTec CNMG120404PC TT9225 | Versatile Steel Finishing Insert
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TaeguTec CNMG120404PC TT9225
The Versatile Standard: Premium CVD Grade for Balanced Steel Finishing Excellence
Product Overview
"Which carbide insert is best for general steel finishing where I need a reliable balance between long tool life and the ability to handle slight interruptions?"
The TaeguTec CNMG120404PC TT9225 is the "workhorse" of the steel turning industry. Optimized for ISO P (Steel), the TT9225 CVD grade combines a high-toughness substrate with a multi-layered alumina coating. This allows it to thrive in a wide range of cutting conditions, from continuous to light interrupted cuts. The PC (Positive Finishing) chipbreaker features a sharp, precision-ground geometry that significantly reduces cutting resistance, ensuring a mirror-like finish and high dimensional stability on carbon and alloy steels.
Key Features
A balanced CVD grade that prevents chipping while maintaining excellent crater wear resistance in steel applications.
Sharp positive rake designed for low-depth-of-cut finishing passes, minimizing vibration and heat build-up.
Perfect for intricate details and high-spec surface requirements on precision steel components.
Technical Specifications
ISO Code Decoding: CNMG120404PC
80° Rhom
0° Relief
Tolerance
Sintered
12.7mm IC
4.76mm S
0.4mm RE
Finish
| Unit System | Designation | I.C. Dimension | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CNMG120404PC | 12.7 mm | 0.4 mm |
| Imperial (ANSI) | CNMG431PC | 0.500" | 0.015" |
Recommended Cutting Parameters (ISO P)
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Mild Steel (Low Carbon) | 240 - 400 m/min | 0.08 - 0.22 mm/rev |
| Alloy Steel (Medium Carbon) | 180 - 320 m/min | 0.10 - 0.25 mm/rev |
Recommended Toolholders
This insert fits all industry-standard 12mm holders including DCLNR/L 12, PCLNR/L 12, and MCLNR/L 12 systems.
Product Applications
- High-precision finishing of carbon steel automotive components.
- Turning of alloy steel fasteners and shafts requiring mirror finishes.
- General-purpose steel machining with varying stability conditions.
- Precision CNC machining where dimensional accuracy is paramount.
TaeguTec Grade Comparison (ISO P)
| Grade Name | Structure | Optimized For |
|---|---|---|
| TT9225 (CVD) | Balanced Toughness | General Use: Reliable all-around finishing. |
| TT9215 (CVD) | High Wear Resistance | High Speed: Continuous finishing cuts. |
Why Choose TaeguTec?
TaeguTec is a global leader in the IMC Group, specializing in high-performance CNC cutting solutions. The TT9225 grade is engineered to eliminate the unpredictability of steel turning, offering a grade that works across almost every steel group with reliability. By choosing TaeguTec, you invest in industrial-grade consistency that reduces downtime and optimizes your cost-per-part in high-output professional manufacturing.
Verified Global Feedback
"The Most Reliable Finish"
We use TT9225 for all our general steel finishing. The 0.4mm radius is perfect for fine detail, and the PC breaker never fails to break chips perfectly.
— Precision Lathe Works (USA)"Versatile and Sharp"
Finally a finishing insert that doesn't chip when the machine isn't 100% rigid. Great results on SCM440 alloy steel.
— M&K Engineering (Germany)"Excellent Surface Quality"
Very consistent tool life. Surface finish is predictable and dimensional accuracy is maintained across long batches.
— Fuji Heavy Machining (Japan)Frequently Asked Questions
1. Can I use TT9225 for interrupted cuts?
Yes, TT9225 is specifically engineered with higher toughness than TT9215, making it suitable for finishing steel parts with slight interruptions or unstable setups.
2. What is the benefit of the PC chipbreaker?
The PC (Positive Finishing) breaker has a sharp geometry that lowers cutting pressure, which is critical for achieving fine finishes and preventing vibration on small depths of cut.
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.