TaeguTec SCMT120404-MT TT8115 | Square Steel Turning Insert
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TaeguTec SCMT120404-MT TT8115
Engineered for ISO P: High-Velocity Square Insert for Advanced Steel Turning
Product Overview
"Which 12mm square insert provides the highest heat resistance and surface finish quality when turning alloy steel at high speeds?"
The TaeguTec SCMT120404-MT TT8115 is a high-speed specialist designed for ISO P (Steel) applications. The TT8115 grade features a thick-film CVD coating that acts as a robust thermal barrier, protecting the carbide substrate from crater wear during high-velocity dry or wet cutting. The MT (Medium) chipbreaker is geometry-tuned for stable chip flow, effectively managing long chips in carbon and alloy steels. This combination ensures maximum productivity and minimal tool changes during continuous CNC turning operations.
Key Features
Advanced coating technology provides extreme hardness and thermal insulation for high-speed continuous cutting.
Ensures smooth evacuation and reduced cutting forces, preventing bird-nesting in steel materials.
Optimized for finishing to medium applications where high surface integrity and tight tolerances are required.
Technical Specifications
ISO Code Decoding: SCMT120404-MT
Square 90°
7° Relief
Tolerance
Hole/Sint
12.7mm IC
4.76mm S
0.4mm RE
Medium Chip
| Unit System | Designation | I.C. (Inscribed Circle) | Thickness (S) |
|---|---|---|---|
| Metric (ISO) | SCMT120404-MT | 12.7 mm | 4.76 mm |
| Imperial (ANSI) | SCMT431-MT | 0.500" | 0.187" |
Recommended Cutting Parameters
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon Steel (P) | 280 - 450 m/min | 0.10 - 0.35 mm/rev |
| Alloy Steel (P) | 220 - 400 m/min | 0.08 - 0.30 mm/rev |
Compatible Toolholders
This SCMT 12 series insert is designed for 90° square positive holders. Compatible with: SSKCR/L 12, SCKCR/L 12, or S-SCKCR 12 boring bars for high-stability internal turning.
Product Applications
- High-speed finishing of carbon steel automotive drive shafts.
- Precision turning of alloy steel flanges and geared components.
- Continuous machining of steel hydraulic manifolds and valve bodies.
- General-purpose steel turning requiring high surface integrity.
TaeguTec Steel Specialists
| Grade Name | Coating | Strength |
|---|---|---|
| TT8115 | CVD (Thick Al2O3) | Wear Resistance: Best for high-velocity continuous steel cutting. |
| TT8125 | CVD | Versatility: Balanced toughness for general steel turning applications. |
Why Choose TaeguTec?
TaeguTec is a world leader in CNC cutting tool technology, and the SCMT 120404-MT TT8115 embodies our commitment to industrial excellence. We understand that productivity in steel turning hinges on thermal stability. By combining an advanced thick-film CVD coating with a high-strength substrate, TaeguTec enables shops to push cutting speeds to the limit without sacrificing tool life. The MT chipbreaker geometry ensures that chip evacuation remains consistent, reducing downtime and protecting your workpiece finish. When your production requires the perfect blend of precision and speed, TaeguTec is the industry standard.
Verified Global Feedback
"Superb Finish on 4140"
We increased our cutting speed by 15% on alloy shafts. The 0.4mm radius leaves a mirror finish, and the TT8115 grade is incredibly stable under heat.
— Precision Dynamics Corp. (USA)"Top für die Serienfertigung"
Outstanding tool life in high-speed automated lines. The chip breaking is perfect; no more bird-nesting on our CNC lathes.
— Weber Maschinenbau (Germany)"Ottimo per Acciaio Legato"
Reliable and consistent. We use these for finishing gears. The dimensional accuracy is perfect from the first part to the last.
— Meccanica Lombarda (Italy)"High Velocity Stability"
The CVD coating is very durable. We've seen much better resistance to crater wear than previous brands. A professional tool.
— Hoshi Manufacturing (Japan)Frequently Asked Questions
1. Is TT8115 suitable for interrupted cuts?
TT8115 is optimized for continuous high-speed cutting. For heavy interrupted cuts, we recommend TT8125 or TT8135 for better impact resistance.
2. Why use a 0.4mm nose radius (04)?
The 0.4mm radius provides lower cutting forces and a superior surface finish, making it ideal for finishing passes and thin-walled components.
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.