TaeguTec VNMG160408EM TT9215 Carbide Turning Insert | 10 Pcs/Box
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TaeguTec VNMG160408EM TT9215 Inserts
Ultra-High-Speed Stainless Steel & Superalloy Profiling | TT9215 PVD Grade | Box of 10 Pcs
"Which 35-degree diamond carbide insert is best for high-speed finishing and profiling in stainless steel and heat-resistant superalloys?"
The TaeguTec VNMG160408EM TT9215 is a double-sided, negative 35° rhombic turning insert engineered specifically for high-velocity copy turning, precision contouring, and light-to-medium stock removal in demanding workpieces. Powered by TaeguTec's flagship high-speed TT9215 PVD coating grade, this insert combines a super-hard, deformation-resistant sub-micron carbide substrate with an ultra-smooth, high-aluminum TiAlSiN nano-PVD shield. Continuous high-speed machining of austenitic stainless steels (304/316) and nickel-based superalloys generates extreme thermal loads and rapid crater wear; the TT9215 grade maintains superior hot hardness, preventing Built-Up Edge (BUE) and flank erosion at elevated surface speeds. Paired with the sharp, positive-rake EM medium-turning chipbreaker and a sturdy 0.8mm nose radius, it minimizes radial cutting forces while smoothly evacuating tough, stringy chips across intricate contours. Whether you are profiling precision aerospace components or exploring TaeguTec negative turning inserts for high-speed production, the VNMG160408EM TT9215 delivers maximum wear resistance and access into tight undercuts.
Core Engineering Advantages
TT9215 Ultra-Hard PVD Shield
High-wear-resistance TiAlSiN nano-PVD layer delivers maximum hot hardness and oxidation resistance at high cutting speeds.
EM Exotic-Alloy Chipbreaker
Sharp cutting edge with a supportive land shears gummy stainless steels cleanly without work-hardening the part surface.
35° Acute Profiling Access
Slender rhombic geometry accesses narrow relief grooves, steep tapers, and back-angles inaccessible to 55° or 80° inserts.
ISO Code Specification Breakdown
Technical Specifications & Dimensional Comparison
| Parameter | Metric (Standard) | Imperial Equivalent |
|---|---|---|
| ISO / ANSI Designation | VNMG 160408 EM | VNMG 332 EM |
| Inscribed Circle (IC) | 9.525 mm | 0.375" (3/8") |
| Thickness (S) | 4.76 mm | 0.1875" (3/16") |
| Corner Radius (RE) | 0.80 mm | 0.0315" (1/32") |
| Grade & Coating | TT9215 (High-Speed Nano-PVD) | Wear-Resistant Stainless/HRSA PVD |
Recommended Cutting Parameters
*Values are optimized for continuous high-speed finishing and light-to-medium profiling. Maintain steady flood coolant to maximize flank life in stainless steel and superalloys.
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (Ap) |
|---|---|---|---|
| Austenitic Stainless (304 / 316) | 140 - 250 m/min | 0.10 - 0.28 mm/rev | 0.40 - 2.50 mm |
| Heat-Resistant Alloys (Inconel / Ti) | 45 - 85 m/min | 0.08 - 0.20 mm/rev | 0.30 - 1.80 mm |
| Alloy & Carbon Steel (4140 / 1045) | 170 - 290 m/min | 0.12 - 0.32 mm/rev | 0.50 - 2.80 mm |
Compatible Tool Holders & Boring Bar Resources
Pair these inserts with rigid 16-size (3/8" IC) negative 35° diamond external turning holders such as the Beyond MVUNR2020K16 Right-Hand Turning Tool Holder, Beyond MVUNL2525M16 Left-Hand Turning Tool Holder, and Beyond MVQNR2525M16 Right-Hand Turning Tool Holder.
For internal profiling and bore machining, explore our rough and fine boring series, browse screw-on system boring bars, or read our engineering guide on how to choose the right boring bar and insert.
Industrial Applications
- High-Speed Stainless Steel Profiling: Continuous OD contouring and finishing on 304, 316L, and precipitation-hardening stainless steel shafts and valves.
- Aerospace & Medical Superalloy Turning: Precision finishing and light profiling of Inconel 718, Titanium Ti-6Al-4V, and cobalt-chrome components at elevated spindle speeds.
- Undercutting & Relief Grooves: Slender 35° rhombic geometry clears steep shoulders and narrow relief grooves cleanly.
System Compatibility & Related Insert Catalogs
The VNMG 160408EM (ANSI VNMG 332 EM) fits all standard ISO-compliant 35° rhombic 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 systems. To stock your tool crib across all geometries, explore our full range of TaeguTec VNMG inserts, TaeguTec DNMG inserts, and TaeguTec CNMG inserts. You can also compare cross-brand tooling options across Korloy VNMG, ZCC-CT VNMG, TaeguTec DNMG, and TaeguTec CNMG collections.
TaeguTec Grade Selection Matrix
Selecting the optimal TaeguTec turning grade for stainless steel and superalloy operations:
- TT9215 (Featured - Ultra-High-Speed Stainless/HRSA PVD): Highest wear resistance and hot hardness in the TT9200 series, engineered for continuous high-speed finishing and light profiling of stainless steels (ISO M05-M20) and superalloys (ISO S).
- TT9225: General-purpose stainless steel PVD grade offering a balanced mix of wear resistance and edge toughness for medium turning.
- TT9235 / TT9080: High-toughness PVD grades recommended when machining heavily interrupted stainless steel surfaces or unstable setups prone to shock loads.
Why Machinists Choose Our Store
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Directly sourced original TaeguTec factory-sealed packages (10 pcs/box).
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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: How does TT9215 differ from TT9225 for stainless steel profiling?
A: TT9215 is formulated with a harder substrate and a higher-wear-resistance PVD coating specifically for continuous, high-speed finishing and light profiling where flank wear limits tool life. Choose TT9225 when higher edge toughness is needed for general medium turning.
Q: What does the "EM" chipbreaker stand for on TaeguTec inserts?
A: "EM" designates Medium machining in Stainless Steel and Exotic/Superalloys. It combines a sharp cutting edge with a supportive land to shear gummy alloys cleanly without work hardening.
Q: How many cutting edges are included in each box?
A: Each double-sided VNMG insert provides 4 usable indexable cutting corners (40 total edges per 10-piece factory-sealed 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.