TaeguTec CNMG120404 TT7015 | Carbide Turning Insert for Cast Iron
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TaeguTec CNMG120408 TT7015
Engineered for High-Speed Cast Iron Machining: The CVD Performance Leader
Product Overview
"Which insert grade offers the best tool life and thermal stability when turning abrasive gray cast iron at maximum spindle speeds?"
The TaeguTec CNMG120408 TT7015 is a high-performance 80° rhombic insert purpose-built for ISO K (Cast Iron). Featuring an advanced CVD (Chemical Vapor Deposition) coating, the TT7015 grade is characterized by extreme hardness and resistance to abrasive wear. Designed specifically for the high-temperature environment of high-velocity cast iron turning, this insert excels in Gray Cast Iron (GG) and Nodular Cast Iron (GGG), ensuring dimensional precision and superior surface Ra over extended production cycles.
Key Features
Thick thermal barrier provides exceptional resistance to crater wear and heat during continuous high-speed cutting.
Optimized substrate prevents rapid edge rounding common in abrasive cast iron machining.
Provides a perfect balance between surface finish and edge strength for medium-duty turning.
Technical Specifications
ISO Designation Decoding: CNMG120408
80° Rhom.
0° Relief
Tolerance
Fixing
12.9mm L
4.76mm S
0.8mm Rad.
| Unit System | Designation | I.C. (Inscribed Circle) | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CNMG120408 | 12.7 mm | 0.8 mm |
| Imperial (ANSI) | CNMG432 | 0.500" | 0.031" |
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Gray Cast Iron (GG25) | 250 - 500 m/min | 0.15 - 0.50 mm/rev |
| Ductile Iron (GGG40) | 180 - 350 m/min | 0.15 - 0.45 mm/rev |
Compatible Toolholders
This insert is designed for standard DCLNR/L 12, PCLNR/L 12, and MCLNR/L 12 external turning tools.
Product Applications
- High-speed roughing and finishing of gray cast iron engine components.
- Turning of ductile iron housings and industrial pump bodies.
- Precision machining of brake discs and flywheels.
- Heavy production environments where tool consistency is vital for cost management.
TaeguTec Grade Benchmarking (ISO K)
| Grade Name | Coating | Best Use Case |
|---|---|---|
| TT7015 (CVD) | Thick CVD | Primary: High-speed continuous turning. |
| TT7025 (CVD) | Tough CVD | Secondary: Interrupted cuts & general purpose. |
Why Choose TaeguTec?
TaeguTec, as a premium member of the IMC Group, is a global innovator in metallurgy. The TT7015 grade represents the gold standard for cast iron turning. By selecting TaeguTec products, you invest in technical excellence that delivers maximum spindle uptime, reduced tool changeovers, and the lowest cost-per-part in high-precision manufacturing.
Verified Global Feedback
"Reliable Performance"
Outstanding on brake drum production. We were able to push the speeds without any early edge failure.
— Precision Machining (USA)"Top Tier for GG25"
Increased tool life by 25% on our cast iron runs compared to our previous European supplier. Great value.
— Automobil GmbH (Germany)"Excellent on Ductile"
Heat resistance is exceptional. Even during long dry cuts, the insert remains dimensionally stable.
— Industrial Foundry (Italy)Frequently Asked Questions
1. Can TT7015 be used for steel (ISO P)?
TT7015 is specifically optimized for the abrasive nature of Cast Iron. For steel, we recommend TT9225 or TT9235 grades.
2. Is this grade suitable for dry cutting?
Yes. TT7015 is ideal for dry machining in cast iron, as its thick CVD alumina coating provides an excellent heat shield.
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.