TaeguTec SCMT09T304-MT TT8115 | Square Steel Turning Insert
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TaeguTec SCMT09T304-MT TT8115
Precision Steel Turning: The High-Speed Specialist for Professional CNC Production
Product Overview
"Which positive square insert delivers the highest productivity and surface quality when turning carbon steel at high cutting velocities?"
The TaeguTec SCMT09T304-MT TT8115 is a high-performance solution for ISO P (Steel) applications. The TT8115 grade utilizes a specialized thick CVD coating that serves as a powerful thermal barrier, protecting the carbide substrate from crater wear during intense high-speed cutting. Designed with the MT (Medium) chipbreaker, this insert features a sharp cutting edge and an optimized groove geometry that forces chips to break consistently, preventing workpiece scratching. This combination is essential for shops requiring high-precision finishes and long, predictable tool life in alloy and carbon steels.
Key Features
Optimized for high-speed finishing to medium machining with exceptional heat and wear resistance.
Ensures reliable chip control across various depths of cut, reducing machine downtime from tangled chips.
Perfect for finishing operations requiring tight tolerances and superior surface Ra values.
Technical Specifications
ISO Code Decoding: SCMT09T304-MT
Square 90°
7° Relief
Tolerance
Hole/Sint
9.52mm IC
3.97mm S
0.4mm RE
Medium Chip
| Unit System | Designation | I.C. (Inscribed Circle) | Nose Radius (RE) |
|---|---|---|---|
| Metric (ISO) | SCMT09T304-MT | 9.52 mm | 0.4 mm |
| Imperial (ANSI) | SCMT32.51-MT | 0.375" | 0.015" |
Recommended Cutting Parameters
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon Steel (P) | 280 - 450 m/min | 0.10 - 0.35 mm/rev |
| Alloy Steel (P) | 220 - 400 m/min | 0.08 - 0.30 mm/rev |
Compatible Toolholders
The SCMT 09 series is optimized for standard 90° square positive holders. Compatible with: SSKCR/L 09 or SCKCR/L 09. For internal boring, use S-SCKCR 09 boring bars.
Product Applications
- High-speed finishing and medium turning of low-to-medium carbon steels.
- Precision profiling of alloy steel shafts and geared components.
- Continuous machining of steel parts requiring high surface integrity.
- Internal boring of steel cylinders and hydraulic manifolds.
TaeguTec Grade Comparison
| Grade Name | Coating | Primary Strength |
|---|---|---|
| TT8115 | CVD (Thick) | Speed Specialist: Best for high-velocity continuous steel cutting. |
| TT8125 | CVD | The Versatile All-Rounder: Balanced toughness for general steel turning. |
Why Choose TaeguTec?
TaeguTec is a global leader in tungsten carbide technology, and the SCMT 09T304-MT TT8115 represents the ultimate in high-speed steel machining. By utilizing advanced CVD coating techniques, TaeguTec provides an insert that maintains a sharp cutting edge even under extreme thermal loads. The MT chipbreaker ensures that chip management is a non-issue, allowing your CNC machines to run longer with less intervention. When precision and productivity are your top priorities, TaeguTec is the industry’s trusted partner for superior results.
Verified Global Feedback
"Flawless Surface Finish"
Using these for finishing 4140 steel. The 0.4mm radius gives us the exact Ra value we need. Tool life in TT8115 is incredible at high speeds.
— Precision Machining Group (USA)"Hervorragende Standzeit"
Very stable performance in alloy steels. The CVD coating handles the heat perfectly during long continuous cuts. Highly recommend for high-speed CNC lines.
— Schmidt Fertigungstechnik (Germany)"Ottima per Acciaio"
The chipbreaker is very effective. We have zero bird-nesting issues on our lathes now. Great tool life on carbon steel components.
— Meccanica di Precisione (Italy)"Consistent Quality"
Reliable performance across all batches. We use this for boring steel parts and the 7-degree relief angle works very well.
— Tanaka Heavy Industries (Japan)Frequently Asked Questions
1. Can I use TT8115 for interrupted cuts?
TT8115 is optimized for continuous high-speed cutting. For heavy interrupted cuts, we recommend TT8125 or TT8135 for better edge toughness.
2. What materials is this insert best for?
It is specifically designed for ISO P (Steel), including carbon steels, alloy steels, and tool steels in stable machining conditions.