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.
Need Help With taegutec Inserts?
Looking for a taegutec equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This taegutec insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.