TaeguTec SCMT120408-PC TT8115 | Square CVD Insert for Cast Iron
Price shown is a starting point. Contact us for a precise quote based on your requirements.
TaeguTec SCMT120408-PC TT8115
High-Speed Cast Iron Specialist: The Ultimate CVD Wear Resistance Solution
Product Overview
"Which CNC insert is most effective for high-velocity finishing of ductile iron while maintaining world-class surface Ra values and long tool life?"
The TaeguTec SCMT120408-PC TT8115 is an industrial-grade turning insert designed for ISO K (Cast Iron) and high-speed ISO P (Steel) applications. The TT8115 grade features a thick, heat-resistant CVD coating optimized to combat the abrasive nature of Gray and Ductile Iron. The PC (Precision) chipbreaker is engineered with a sharp, positive rake angle that minimizes cutting pressure and heat generation, effectively preventing vibrations. With its 0.8mm nose radius, this insert provides the ideal balance of edge strength and finish quality, ensuring stable performance in high-volume CNC manufacturing.
Key Features
A specialized Al2O3 thick coating that provides exceptional crater and flank wear resistance at high temperatures.
Designed for light depths of cut (finishing). The sharp edge slices through the material, reducing work hardening.
Superior edge toughness ensures tolerances are maintained across thousands of parts, reducing downtime for tool offsets.
Technical Specifications
ISO Code Decoding: SCMT120408-PC
Square 90°
7° Relief
Tolerance
Hole/Sint
12.7mm IC
4.76mm S
0.8mm RE
Prec Finish
| Unit System | Designation | I.C. (Inscribed Circle) | Thickness (S) |
|---|---|---|---|
| Metric (ISO) | SCMT120408-PC | 12.70 mm | 4.76 mm |
| Imperial (ANSI) | SCMT432-PC | 0.500" | 0.187" |
Recommended Cutting Parameters
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Gray/Ductile Iron (ISO K) | 200 - 450 m/min | 0.10 - 0.30 mm/rev |
| Carbon/Alloy Steel (ISO P) | 180 - 350 m/min | 0.08 - 0.25 mm/rev |
Compatible Toolholders
This SCMT 12 series insert fits standard 90° square positive holders. Best results when paired with: SSKCR/L 12, SCKCR/L 12, or S-SCKCR 12 boring bars for internal finishing.
Product Applications
- High-speed finishing of automotive brake discs, drums, and flywheels.
- Precision turning of gear housings and transmission components in Ductile Iron.
- Semi-finishing of large steel rollers and shafts requiring high wear resistance.
- Continuous automated CNC turning where predictability is essential.
TaeguTec Grade Comparison
| Grade Name | Coating | Best Use Case |
|---|---|---|
| TT8115 | Hard CVD | High-Speed ISO K: Maximum resistance to abrasive wear. |
| TT8125 | Tough CVD | General Purpose: Better for interrupted cuts or medium steel turning. |
Why Choose TaeguTec?
TaeguTec is a global leader in advanced carbide solutions, and the SCMT120408-PC TT8115 is a benchmark for cast iron machining. We understand that cast iron creates massive amounts of heat and abrasive dust that destroys standard inserts. Our TT8115 grade is engineered with a proprietary thick Al2O3 layer that provides an impenetrable thermal shield. The PC chipbreaker ensures that chips are broken and evacuated quickly, preventing heat transfer into the workpiece. When you choose TaeguTec, you invest in industrial tooling that delivers maximum machine uptime and superior surface Ra quality.
Verified Global Feedback
"Cast Iron specialist"
We use these on GGG50 castings at 350 m/min. The tool life is double what we got from our previous brand. Exceptional consistency.
— Castings Engineering (USA)"Hervorragende Oberfläche"
The PC geometry is sharp enough to provide a ground-like finish on gray iron parts. Highly recommended for automotive production.
— Precision Zerspanung (Germany)"Ottima Resistenza"
Very high wear resistance. We achieved 400 pieces per edge on steel shafts with high surface gloss. Top tier product.
— Officina Meccanica (Italy)"Stable for mass production"
Very predictable wear. Essential for our automated CNC line to avoid frequent tool checks.
— Sato Manufacturing (Japan)Frequently Asked Questions
1. Is TT8115 suitable for heavy interruptions?
No. TT8115 is a high-hardness grade optimized for continuous finishing. For heavy interruptions, the tougher TT8125 is recommended.
2. Can I use this for dry machining?
Yes, the thick CVD coating allows for dry machining in Cast Iron, though high-pressure coolant usually extends tool life in Steel.
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.