TaeguTec CNMG120404ML TT5080 | Tough Cast Iron Turning Insert
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TaeguTec CNMG120408ML TT5080
Engineered for Impact: High-Toughness CVD Grade for Interrupted Cast Iron Machining
Product Overview
"Which carbide turning insert grade is most reliable for interrupted cuts and abrasive gray iron when tool chipping is the primary failure mode?"
The TaeguTec CNMG120408ML TT5080 is an 80° rhombic insert designed for maximum process reliability in ISO K (Cast Iron) and difficult ISO P (Steel) applications. Featuring the specialized TT5080 CVD grade, it combines a thick alumina thermal barrier with a high-toughness substrate to absorb mechanical shocks. The ML (Medium-Light) chipbreaker geometry reduces cutting resistance and heat generation, while the 0.8mm corner radius provides the reinforced edge strength necessary for medium roughing to finishing cycles in unstable machining conditions.
Key Features
A specialized CVD grade designed to prevent edge micro-chipping during interrupted cuts and crusty casting skins.
Positive rake design minimizes cutting forces and machine spindle load, reducing chatter in long-reach applications.
Reinforced corner design provides a perfect balance between surface Ra quality and industrial-grade durability.
Technical Specifications
Decoding CNMG120408ML
80° Rhom
0° Relief
Tolerance
Clamping
12.7mm IC
4.76mm S
0.8mm RE
Med-Light
| Unit System | Designation | I.C. Size | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CNMG120408ML | 12.7 mm | 0.8 mm |
| Imperial (ANSI) | CNMG432ML | 0.500" | 0.031" |
Recommended Cutting Parameters (ISO K)
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Gray Cast Iron (GG25) | 180 - 450 m/min | 0.15 - 0.40 mm/rev |
| Ductile Iron (GGG40) | 140 - 320 m/min | 0.12 - 0.35 mm/rev |
Required Toolholders
Matches all standard DCLNR/L 12, PCLNR/L 12, and MCLNR/L 12 external and internal holders.
Product Applications
- Medium roughing to semi-finishing of cast iron motor housings.
- Turning of ductile iron parts with heavy scale or interrupted geometry.
- Machining abrasive cast iron in unstable CNC lathe setups.
- General turning of carbon steel when higher toughness is required than standard grades.
TaeguTec Grade Comparison (Cast Iron)
| Grade Name | Performance Profile | Primary Application |
|---|---|---|
| TT5080 (CVD) | Extreme Toughness | Interrupted: Unstable or heavy impact. |
| TT5100 (CVD) | Maximum Wear Resist | Continuous: High-speed stable finishing. |
Why Choose TaeguTec?
A global leader under the IMC Group umbrella, TaeguTec is defined by metallurgical excellence. The TT5080 grade is the insurance policy for your CNC shop, providing the reliability needed for the most abrasive and high-impact iron castings. By selecting TaeguTec, you invest in industrial consistency that minimizes scrap, protects your spindle, and delivers the lowest total cost-per-part in demanding manufacturing environments.
Verified Global Feedback
"The Solution for Chipping"
We were losing corners to chipping on ductile iron hubs. Switched to TT5080 and haven't had a sudden tool failure since. Very stable.
— Castings Ltd. (Germany)"Great for Unstable Setups"
The ML breaker really reduces chatter on our long-reach boring bars. Excellent performance on abrasive gray iron.
— Precision CNC Works (USA)"Reliable and Consistent"
The 0.8mm radius is very robust. It holds the tolerance across our production runs without surprise edge failure.
— Heavy Industrial (Japan)Frequently Asked Questions
1. When should I choose TT5080 over TT5100?
Choose TT5080 for interrupted cuts or unstable machining. Choose TT5100 for continuous, high-speed stable turning.
2. Can I use this for Stainless Steel?
While TT5080 is very tough, we recommend our specialized ISO M grades for the best chip control in stainless 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.