TaeguTec SCMT120408-PC TT8115 | Square CVD Insert for Cast Iron
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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.
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.