TaeguTec CCMT120408MT TT7015 | PVD Turning Insert for Stainless Steel
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TaeguTec CCMT120408MT TT7015
Precision PVD Grade for High-Speed Stainless Steel & HRSA Turning
Product Overview
"Which insert grade offers the best edge toughness and thermal stability for medium turning of 304/316 stainless steel at high cutting speeds?"
The TaeguTec CCMT120408MT TT7015 is an 80° rhombic turning insert engineered specifically for ISO M (Stainless Steel) and ISO S (Super Alloys). Featuring the high-performance TT7015 PVD coating, this grade excels in managing the extreme heat generated during the machining of tough alloys. The MT chipbreaker (Medium Turning) is precision-ground to balance a sharp cutting action with enhanced edge strength, effectively preventing built-up edge (BUE). With its 0.8mm corner radius, this insert provides superior surface finish stability and increased resistance to edge chipping in continuous to slightly interrupted cuts.
Key Features
A TiAlN-based coating that maintains extreme hardness and oxidation resistance at high cutting temperatures.
Optimized for medium-duty finishing, ensuring reliable chip breaking in high-ductility materials like stainless steel.
Increased edge toughness for stable tool life and superior surface overlap in precision machining.
Technical Specifications
ISO Code Decoding: CCMT120408MT
80° Rhom.
7° Relief
Tolerance
Screw Fix
12.9mm L
4.76mm S
0.8mm Rad.
Chipbreaker
| Unit System | Model Number | IC (Inscribed Circle) | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CCMT120408MT | 12.7 mm | 0.8 mm |
| Imperial (ANSI) | CCMT432MT | 0.500" | 0.031" |
Recommended Cutting Parameters
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Stainless Steel (ISO M) | 90 - 210 m/min | 0.12 - 0.28 mm/rev |
| HRSA Alloys (ISO S) | 35 - 85 m/min | 0.10 - 0.22 mm/rev |
Compatible Holders
This insert fits all standard SCLCR/L 12 external holders and S-SCLCR/L 12 boring bars.
Target Applications
- Medium turning of automotive stainless steel exhaust components.
- Machining of corrosion-resistant hydraulic fittings.
- Precision turning of Inconel/Titanium aerospace hardware.
- Production of medical-grade stainless steel housings and pins.
TaeguTec Grade Comparison (ISO M)
| Grade | Coating | Application |
|---|---|---|
| TT7015 (PVD) | TiAlN High-Temp | High Speed: Finishing in heat-resistant alloys. |
| TT7025 (PVD) | TiAlN Multi-Layer | Versatile: Roughing to finishing with toughness. |
Why Choose TaeguTec?
TaeguTec, as a key member of the IMC Group, is a global innovator in high-performance metallurgy. The TT7015 grade is the result of advanced PVD coating research, offering a smoother surface and a sharper edge that significantly reduces the friction and mechanical load on your machine. When you choose TaeguTec, you invest in South Korean engineering that ensures the highest stability and dimensional accuracy in the world’s most demanding materials.
Global User Feedback
"Perfect for 316 Stainless"
Replaced our standard carbide with TT7015 on a high-speed stainless run. Tool life increased by 35% and the finish is excellent.
— Precision Lathe (USA)"Hervorragende Oberfläche"
Consistent results in Duplex stainless. The MT chipbreaker handles the gummy chips perfectly.
— Fertigungstechnik GmbH (Germany)"Ottimo per Inox"
Very stable performance in Titanium finishing. The 0.8mm radius provides a very robust edge.
— Officina Meccanica (Italy)Frequently Asked Questions
1. Can TT7015 be used on Carbon Steel?
While it can cut steel, it is optimized for Stainless and Super Alloys. For Carbon Steel, we recommend the TT8115 or TT8125 grades.
2. Is this insert suitable for dry machining?
When machining stainless steel, high-pressure coolant is highly recommended to manage heat and prevent built-up edge.
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.