TaeguTec CCMT09T304MT TT8125 | CVD Turning Insert for Steel Machining
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TaeguTec CCMT09T304MT TT8125
High-Performance CVD Grade for Versatile Steel Turning Operations
Product Overview
"Which insert grade is most reliable for high-speed medium turning in carbon and alloy steels across various machine conditions?"
The TaeguTec CCMT09T304MT TT8125 is the industry-standard 80° rhombic insert for ISO P (Steel) machining. Leveraging TaeguTec's advanced TT8125 CVD coating technology, this insert features a thick alumina layer that acts as a thermal barrier, allowing for aggressive cutting speeds while maintaining exceptional crater wear resistance. The MT chipbreaker (Medium Turning) is engineered with a positive rake angle and a robust land design to ensure predictable chip evacuation in gummy steels while preventing edge chipping in slightly interrupted cuts.
Key Features
Superior heat resistance allows for higher surface speeds (Vc) without compromising tool life.
Optimized for medium-duty applications, providing a stable cutting edge and excellent surface finish.
Excellent stability in both continuous and light-interrupted cuts in various steel alloys.
Technical Specifications
ISO Code Explanation: CCMT09T304MT
80° Rhom.
7° Relief
Tolerance
Screw Fix
9.7mm L
3.97mm S
0.4mm Rad.
Chipbreaker
| Unit System | Designation | IC (Inscribed Circle) | 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) |
|---|---|---|
| Carbon Steel (ISO P) | 180 - 360 m/min | 0.08 - 0.20 mm/rev |
| Alloy Steel (ISO P) | 150 - 280 m/min | 0.08 - 0.18 mm/rev |
Compatible Toolholders
This insert is precision-matched for SCLCR/L 09 external toolholders and S-SCLCR/L 09 boring bars.
Product Applications
- High-speed medium turning of automotive drivetrain components.
- Precision boring of alloy steel housings and hydraulic fittings.
- Machining of structural steel pins and fasteners in mass production.
- General job-shop work involving mixed steel grades (1018, 1045, 4140).
TaeguTec Grade Comparison (Steel)
| Grade | Coating | Primary Performance |
|---|---|---|
| TT8125 (CVD) | CVD Multilayer | Versatility: First choice for general steel. |
| TT8115 (CVD) | CVD Al2O3 | Speed: Best for high-speed continuous work. |
Why Choose TaeguTec?
TaeguTec, as a member of the IMC Group, leads the industry in solving metal-cutting challenges through high-performance metallurgy. The TT8125 grade was developed to maximize productivity in modern CNC machining centers. By combining a heat-resistant CVD coating with a toughness-optimized substrate, TaeguTec ensures that your spindle remains active longer, significantly reducing your cost-per-part in steel turning applications.
Verified Global Feedback
"Reliable and stable"
We use TT8125 for all our alloy steel parts. The wear is very predictable, which makes our lights-out machining much safer.
— Precision Lathe (USA)"Top Performance"
Outstanding chip control in 4140. The MT breaker really handles the chips well at higher feeds.
— Werkzeugbau GmbH (Germany)"Ottima per Acciaio"
Excellent heat resistance. We increased our cutting speed by 20% and tool life remained stable.
— Meccanica di Precisione (Italy)Frequently Asked Questions
1. Is TT8125 suitable for Stainless Steel?
While it can cut stainless steel in a pinch, it is optimized for ISO P (Steel). For stainless steel, we recommend the TT7015/TT7025 grades.
2. What is the benefit of the MT chipbreaker?
The MT breaker is designed for medium turning. It balances edge strength with chip-breaking efficiency, making it the most versatile geometry for general turning.
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.