TaeguTec SCMT120404-PC TT8115 | Square CVD Insert for Cast Iron
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TaeguTec SCMT120404-PC TT8115
High-Speed Cast Iron Master: Precision Finishing with Thick CVD Coating
Product Overview
"Which CNC insert is most effective for high-velocity finishing of cast iron components where crater wear and abrasion resistance are the top priorities?"
The TaeguTec SCMT120404-PC TT8115 is a specialized turning solution for ISO K (Cast Iron) and high-speed ISO P (Steel). The TT8115 grade features a thick Al2O3 CVD coating that provides a superior thermal barrier and extreme hardness against abrasive Gray and Ductile irons. The PC (Precision) chipbreaker is engineered with a positive rake angle to reduce cutting forces and prevent vibrations during fine finishing. With a 0.4mm nose radius, this insert excels at maintaining tight dimensional tolerances and delivering a superior surface Ra value in high-volume production cycles.
Key Features
Optimized for wear resistance at high temperatures, allowing for increased cutting speeds (Vc) without compromising edge life.
Specifically designed for finishing passes. The sharp edge slices through the material, reducing the risk of built-up edge (BUE).
The multi-layer CVD coating resists chemical wear and cratering, typical in high-speed cast iron machining.
Technical Specifications
ISO Code Decoding: SCMT120404-PC
Square 90°
7° Relief
Tolerance
Hole/Sint
12.7mm IC
4.76mm S
0.4mm RE
Prec Finish
| Unit System | Designation | I.C. (Inscribed Circle) | Nose Radius (RE) |
|---|---|---|---|
| Metric (ISO) | SCMT120404-PC | 12.70 mm | 0.4 mm |
| Imperial (ANSI) | SCMT431-PC | 0.500" | 0.016" |
Recommended Cutting Parameters
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Cast Iron (ISO K) | 200 - 450 m/min | 0.10 - 0.25 mm/rev |
| Carbon Steel (ISO P) | 180 - 350 m/min | 0.05 - 0.20 mm/rev |
Compatible Toolholders
This SCMT 12 series insert fits standard 90° square positive holders. Compatible with: SSKCR/L 12, SCKCR/L 12, or S-SCKCR 12 internal boring bars.
Product Applications
- High-speed finishing of Gray Iron automotive brake components.
- Precision turning of Ductile Iron gear housings and transmission parts.
- Finishing of medium-carbon steel shafts and fasteners in mass production.
- Internal boring operations where surface Ra is critical for assembly.
TaeguTec Grade Benchmarking (Cast Iron Focus)
| Grade Name | Coating | Machining Condition |
|---|---|---|
| TT8115 | High-Hardness CVD | High-Speed Finishing: Best for continuous cuts and wear resistance. |
| TT8125 | Balanced CVD | General Purpose: Best for mixed cuts and slight interruptions. |
Why Choose TaeguTec?
TaeguTec is a global pioneer in tungsten carbide innovation, and the SCMT120404-PC TT8115 is a benchmark for high-velocity cast iron machining. We understand that cast iron creates abrasive dust and high heat that destroys standard coatings. Our TT8115 grade is engineered with a proprietary thick Al2O3 layer that provides an impenetrable shield. The PC chipbreaker is the result of thousands of hours of R&D, designed to ensure that chips are controlled even at light feeds. When you choose TaeguTec, you invest in industrial reliability that maximizes your machine uptime and delivers world-class surface Ra quality.
Verified Global Feedback
"Cast Iron Specialist"
We use these on GGG50 castings. The tool life is double what we were getting from our previous supplier. Stable and sharp.
— Cast-Components Corp (USA)"Präzision in der Serie"
Excellent surface finish on gray iron parts. The PC geometry works perfectly at light finishing depths. Very reliable.
— Automobil-Technik (Germany)"Ottima Resistenza"
TT8115 is fantastic for high-speed runs. We reached 400m/min and the edge remained clean. High productivity.
— Officina Meccanica (Italy)"Consistent Quality"
Reliable performance in ductile iron. The 0.4 radius allows for very precise geometries on small components.
— Sato Engineering (Japan)Frequently Asked Questions
1. Is TT8115 better than TT8125 for interrupted cuts?
No. TT8115 is a high-hardness grade for high-speed continuous finishing. For interrupted cuts, TT8125 is recommended for its superior toughness.
2. Can I use this for Stainless Steel?
CVD grades for cast iron are generally not optimized for Stainless (ISO M). For stainless, we recommend TT9225 or the PVD TT9080 grade.
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.