TaeguTec DCMT11T308PC TT8115 | High-Speed Steel Turning Insert
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💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
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.
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.