TaeguTec DCMT11T308PC TT8115 | High-Speed Steel Turning Insert
Price shown is a starting point. Contact us for a precise quote based on your requirements.
TaeguTec DCMT11T308PC TT8115
Engineered for Speed: The Ultimate Grade for High-Efficiency Steel Machining
Product Overview
"Which insert grade is the absolute best for high-speed finishing of carbon steel while resisting heat-related crater wear?"
The TaeguTec DCMT11T308PC TT8115 is a professional CVD-coated carbide insert optimized for high-velocity ISO P (Steel) and ISO K (Cast Iron) turning. The TT8115 grade features a high-hardness substrate paired with an advanced multi-layered CVD coating that acts as a superior thermal barrier. This allows for significantly higher cutting speeds compared to general-purpose grades. The PC (Precision-Chip) chipbreaker is tuned for finishing operations, utilizing a sharp geometry that reduces tool pressure and prevents built-up edge (BUE). With its 0.8mm radius, this insert provides the stability and edge robustness required for continuous, high-output CNC environments.
Key Features
A thick alumina (Al2O3) layer provides extreme resistance to high-temperature cratering during high-speed passes.
Sharp ground-style edge reduces cutting resistance, resulting in excellent surface Ra values and dimensional consistency.
Offers a stronger edge than the 0.4mm variant, ideal for higher feed rates and more aggressive finishing passes.
Technical Specifications
ISO Code Decoding: DCMT11T308PC
55° Rhom
7° Relief
Tolerance
Hole/Sint
9.525mm IC
3.97mm S
0.8mm RE
Finishing
| Unit System | Designation | I.C. Dimension | Radius |
|---|---|---|---|
| Metric (ISO) | DCMT11T308PC | 9.525 mm | 0.8 mm |
| Imperial (ANSI) | DCMT3(2.5)2PC | 0.375" | 0.031" |
Recommended Cutting Parameters
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon Steel (ISO P) | 250 - 500 m/min | 0.08 - 0.25 mm/rev |
| Cast Iron (ISO K) | 200 - 400 m/min | 0.10 - 0.25 mm/rev |
Compatible Toolholders
This DCMT 11T3 series insert is optimized for standard Holders and Boring Bars including SDJCR/L 11 and S-SDUCR/L 11.
Product Applications
- High-speed finishing of carbon steel automotive components.
- Precision CNC turning of alloy steel gears and shafts.
- Machining of gray cast iron parts where heat management is critical.
- High-output manufacturing requiring long, predictable tool life at maximum Vc.
TaeguTec Grade Comparison Matrix
| Grade Name | Coating | Primary Strength |
|---|---|---|
| TT8115 | CVD Coated | The High-Speed King: Maximum wear resistance in steel. |
| TT8125 | CVD Coated | The All-Rounder: Balanced toughness/wear for general steel. |
Why Choose TaeguTec?
TaeguTec, a member of the IMC Group, is a global leader in industrial cutting innovation. The TT8115 grade represents the ultimate in CVD technology for high-speed steel and cast iron turning. By combining sub-micron substrate engineering with a specialized thermal-resistant coating and the precision PC chipbreaker, TaeguTec ensures your CNC operations reach maximum efficiency. When your production requires the highest cutting speeds with no compromise on surface quality, the DCMT 11T3 with TT8115 is the professional choice for industrial excellence.
Global Industry Feedback
"Speed Champion"
We pushed our Vc to 450 m/min on 1045 steel and the TT8115 handled it with zero cratering. Incredible tool life.
— Precision Manufacturing (USA)"Exzellente Standzeit"
Perfect for our finishing passes. Surface finish Ra is very low, and the dimensions hold perfectly over long runs.
— Werkzeugbau AG (Germany)"Consistent Quality"
Highly reliable in cast iron. The 0.8mm radius is very robust even when we increase the feed slightly.
— Meccanica S.r.l (Italy)Frequently Asked Questions
1. Is TT8115 better than TT8125 for finishing?
Yes, if you are machining at high cutting speeds. TT8115 has higher wear resistance specifically for high-velocity continuous cutting.
2. Can this be used for dry machining?
Yes. The CVD coating in the TT8115 grade is designed to provide excellent thermal protection during high-speed dry 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.