TaeguTec WNMG060404FG TT8115 Carbide Turning Insert | 10 Pcs/Box
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TaeguTec WNMG060404FG TT8115 Inserts
High-Speed Steel Finishing | 6-Edge Trigon Geometry | TT8115 CVD Grade | Box of 10 Pcs
"Which double-sided carbide insert is best for high-speed finishing in carbon and alloy steels?"
The TaeguTec WNMG060404FG TT8115 is a high-precision, negative 80° trigon turning insert engineered for high-velocity finishing and light semi-finishing on CNC lathes. Powered by TaeguTec's premier TT8115 CVD coating grade, this insert features a thick, multi-layered Alumina (Al2O3) and TiCN thermal barrier over a hard, deformation-resistant carbide substrate. It thrives at elevated surface speeds where extreme cutting temperatures rapidly degrade standard inserts. Paired with the sharp, positive-rake FG finishing chipbreaker and a precision 0.4mm corner radius, it delivers tight dimensional tolerances, low radial cutting forces, and superior Ra surface finishes across carbon steels, alloy steels, and ductile cast irons.
Core Engineering Advantages
TT8115 High-Speed CVD Shield
Thick Al2O3 thermal layer resists crater wear and plastic deformation at high RPMs in continuous steel turning.
FG Precision Chipbreaker
Engineered specifically for shallow depths of cut, curling thin finishing chips cleanly without scratching the workpiece.
6 Economical Cutting Edges
Double-sided 80° trigon geometry yields 6 indexable corners per insert, maximizing production economy.
ISO Code Specification Breakdown
Technical Specifications & Dimensional Comparison
| Parameter | Metric (Standard) | Imperial Equivalent |
|---|---|---|
| ISO / ANSI Designation | WNMG 060404 FG | WNMG 331 FG |
| Inscribed Circle (IC) | 9.525 mm | 0.375" (3/8") |
| Thickness (S) | 4.76 mm | 0.1875" (3/16") |
| Corner Radius (RE) | 0.40 mm | 0.0157" (1/64") |
| Grade & Coating | TT8115 (CVD TiCN + Al2O3) | High-Speed CVD Coated Carbide |
Recommended Cutting Parameters
*Values are optimized for continuous high-speed finishing. Ensure rigid clamping and high surface speed (Vc) to maximize CVD performance.
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (Ap) |
|---|---|---|---|
| Carbon Steel (1045 / S45C) | 240 - 420 m/min | 0.08 - 0.25 mm/rev | 0.20 - 1.80 mm |
| Alloy Steel (4140 / 4340) | 200 - 360 m/min | 0.08 - 0.22 mm/rev | 0.20 - 1.50 mm |
| Cast Iron (Gray & Ductile) | 220 - 400 m/min | 0.10 - 0.28 mm/rev | 0.30 - 2.00 mm |
Compatible Tooling Systems
Pair these inserts with standard 06-size (3/8" IC) negative trigon turning holders such as MWLNR/L, DWLNR/L, or PWLNR/L external holders and S-MWLNR/L internal boring bars.
Industrial Applications
- High-Speed OD Finishing & Profiling: Achieving tight bearing-journal tolerances and smooth surface finishes on steel shafts.
- Precision Internal Boring: Low radial cutting pressure minimizes boring bar deflection in deep or thin-walled bores.
- High-Volume Automotive & Mass Production: Maximizing metal removal speed and tool longevity on continuous CNC lathe runs.
System Compatibility
The WNMG 060404FG (ANSI WNMG 331 FG) fits all standard ISO-compliant 80° trigon toolholders featuring a 9.525mm (3/8") inscribed circle pocket, including lever-lock (P-type), wedge-clamp (M-type), and double-clamp (D-type) turning holders.
TaeguTec Grade Selection Matrix
Choosing the right TaeguTec grade for your steel turning operations:
- TT8115 (Featured): High-speed, high-wear-resistance CVD grade. Ideal for continuous finishing and semi-finishing of carbon/alloy steels and cast irons at high cutting speeds.
- TT8125: General-purpose CVD steel grade offering higher edge toughness for light-to-medium interrupted cuts.
- TT9080: High-toughness nano-PVD grade recommended when switching from carbon steel to gummy stainless steels or superalloys.
Why Machinists Choose Our Store
100% Genuine Guarantee
Directly sourced original TaeguTec factory-sealed packages (10 pcs/box).
Same-Day Dispatch
In-stock cutting tools ship rapidly to keep your CNC spindles turning.
Technical Engineering Support
On-staff tooling specialists available for speed and feed recommendations.
Frequently Asked Questions
Q: What does the "FG" chipbreaker stand for on TaeguTec inserts?
A: "FG" designates a Finishing geometry optimized for general steels. It incorporates micro-dots and a sharp positive rake land to break thin, continuous chips at shallow depths of cut (0.2mm - 1.8mm).
Q: Can TT8115 be used for stainless steel?
A: TT8115 is formulated primarily for carbon steels (ISO P) and cast irons (ISO K). For austenitic stainless steel (ISO M), PVD grades like TaeguTec TT9030 or TT9080 are recommended to prevent built-up edge.
Q: How many cutting edges does each insert provide?
A: Because it is a double-sided negative trigon (W-shape) insert, each piece provides 6 indexable cutting corners (60 edges per 10-piece box).
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.