TaeguTec DNMG150404FG TT8115 | High-Speed Steel Finishing Insert
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TaeguTec DNMG150404FG TT8115
Elite High-Speed CVD Coating: Engineered for Perfect Steel Finishing
Product Overview
"Which insert grade offers the best heat resistance and surface quality for high-velocity finishing on carbon steel parts?"
The TaeguTec DNMG150404FG TT8115 is a high-performance CVD-coated carbide insert optimized for high-speed ISO P (Steel) and ISO K (Cast Iron) turning. The TT8115 grade features a sub-micron hard substrate paired with a thick, multi-layered alumina coating. This provides an incredible thermal barrier, allowing for significantly higher cutting speeds (Vc) without sacrificing tool life. The FG (Finishing Geometry) chipbreaker is designed with a high-positive rake angle that reduces cutting resistance, ensuring elite chip evacuation and a superior surface Ra finish even at very light feeds. The 0.4mm corner radius delivers the precision required for tight tolerances in complex CNC turning operations.
Key Features
Thick Al2O3 coating offers superior oxidation resistance, making it the top choice for dry or high-speed wet machining.
Specially engineered for light finishing passes, preventing built-up edge and ensuring a smooth, polished surface finish.
Enables faster cycle times by allowing higher cutting speeds than general-purpose PVD or lower-tier CVD grades.
Technical Specifications
ISO Code Decoding: DNMG150404FG
55° Rhom
0° Relief
Tolerance
Hole/Sint
12.7mm IC
4.76mm S
0.4mm RE
Chipbreaker
| Unit System | Designation | I.C. Dimension | Radius |
|---|---|---|---|
| Metric (ISO) | DNMG150404FG | 12.7 mm | 0.4 mm |
| Imperial (ANSI) | DNMG431FG | 0.500" | 0.016" |
Recommended Cutting Parameters
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon Steel (ISO P) | 180 - 450 m/min | 0.05 - 0.20 mm/rev |
| Cast Iron (ISO K) | 150 - 350 m/min | 0.08 - 0.20 mm/rev |
Compatible Toolholders
This DNMG 1504 series insert is a perfect match for standard Holders and Boring Bars including DDJNR/L 15 and PDJNR/L 15.
Product Applications
- High-precision finishing of automotive steel shafts and components.
- Precision CNC turning for aerospace-grade steel alloys.
- Finishing of gray cast iron housings requiring thermal stability.
- High-output industrial production requiring tight tolerances and mirror surface quality.
TaeguTec Grade Comparison Matrix
| Grade Name | Coating | Primary Focus |
|---|---|---|
| TT8115 | CVD Al2O3 | High Speed: Best for high-velocity steel/iron finishing. |
| TT8125 | CVD TiCN | General Purpose: Balanced for steel turning and light roughing. |
Why Choose TaeguTec?
TaeguTec, as part of the IMC Group, stands at the pinnacle of metalworking technology. The TT8115 grade represents the latest in high-speed CVD coating engineering, designed specifically to reduce thermal shock and prevent cratering in demanding finishing operations. By choosing the DNMG 1504 series with the FG chipbreaker, you are investing in a tool that guarantees consistent surface quality and dimensional accuracy, reducing tool changes and maximizing machine uptime. For elite performance in carbon and alloy steels, TaeguTec is the industry’s trusted partner.
Global Industry Feedback
"Incredible Heat Resistance"
We increased our cutting speed by 30% on steel shafts. The TT8115 holds the edge perfectly and the finish is mirror-like.
— Precision Machining Group (USA)"Top Finish Ra"
Very stable performance on cast iron. The FG breaker works wonders for fine finishing. Highly recommended.
— Werkzeugbau AG (Germany)"Consistency is Key"
Predictable tool life is what we need. This insert delivers exactly that in high-volume production cycles.
— Meccanica S.r.l (Italy)Frequently Asked Questions
1. Is the TT8115 grade suitable for dry turning?
Yes, the thick CVD Al2O3 coating acts as an excellent thermal insulator, making it highly effective for dry, high-speed machining.
2. When should I choose the FG chipbreaker over others?
The FG (Finishing Geometry) should be used for final finishing passes where the depth of cut is small and the highest surface quality is required.
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.