TaeguTec VNMG160408-MT TT9225 Carbide Turning Insert | 10 Pcs/Box
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TaeguTec VNMG160408-MT TT9225 Inserts
High-Speed Stainless Steel & Superalloy Profiling | TT9225 PVD Grade | Box of 10 Pcs
"Which 35-degree diamond carbide insert is best for medium-duty profiling and copy turning in stainless steel and heat-resistant superalloys?"
The TaeguTec VNMG160408-MT TT9225 is a double-sided, negative 35° rhombic turning insert engineered specifically for precision contouring, copy turning, and medium stock removal in demanding workpieces. Powered by TaeguTec's advanced TT9225 PVD coating grade, this insert features a high-hardness, heat-resistant sub-micron carbide substrate shielded by an ultra-smooth TiAlSiN nano-PVD layer. Austenitic stainless steels (304/316) and nickel-based superalloys generate intense localized cutting heat and severe notch wear; the TT9225 grade prevents Built-Up Edge (BUE), thermal cracking, and premature flank wear at elevated speeds. Paired with the sharp, positive-rake MT medium-turning chipbreaker and a sturdy 0.8mm nose radius, it reduces radial cutting forces and smoothly evacuates tough, stringy chips across multi-directional profiling passes. Whether you are contouring intricate aerospace shafts or exploring TaeguTec negative turning inserts for high-precision production, the VNMG160408-MT TT9225 delivers exceptional edge security and access into tight undercuts.
Core Engineering Advantages
TT9225 High-Heat PVD Shield
Nano-layered TiAlSiN PVD coating resists oxidation, crater wear, and notch wear in gummy stainless steels and HRSA.
MT Medium-Duty Chipbreaker
Strengthened cutting edge land protects the acute 35° nose while controlling chip flow across moderate feeds and depths.
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-MT | VNMG 332 MT |
| 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 | TT9225 (Nano-PVD TiAlSiN) | High-Speed Stainless/HRSA PVD Carbide |
Recommended Cutting Parameters
*Values are starting recommendations for medium profiling and copy turning. Maintain steady flood coolant for stainless steel and superalloys to evacuate heat and prevent notch wear.
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (Ap) |
|---|---|---|---|
| Austenitic Stainless (304 / 316) | 120 - 220 m/min | 0.12 - 0.30 mm/rev | 0.50 - 2.80 mm |
| Heat-Resistant Alloys (Inconel / Ti) | 35 - 75 m/min | 0.10 - 0.22 mm/rev | 0.40 - 2.00 mm |
| Alloy & Carbon Steel (4140 / 1045) | 150 - 260 m/min | 0.15 - 0.35 mm/rev | 0.60 - 3.00 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
- Stainless Steel Contour & Copy Turning: Multi-directional OD profiling on 304, 316L, and duplex stainless shafts, valves, and food-grade fittings.
- Aerospace & Superalloy Machining: Precision contouring of Inconel 718, Titanium Ti-6Al-4V, and cobalt-chrome components at high thermal loads.
- Undercutting & Relief Grooves: Slender 35° rhombic geometry clears steep shoulders and narrow relief grooves cleanly.
System Compatibility & Related Insert Catalogs
The VNMG 160408-MT (ANSI VNMG 332 MT) fits all standard ISO-compliant 35° rhombic toolholders featuring a 9.525mm (3/8") inscribed circle pocket, including top-and-hole clamp (M-type), double-clamp (D-type), and lever-lock (P-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:
- TT9225 (Featured - High-Speed Stainless/HRSA PVD): Next-generation TiAlSiN nano-PVD grade offering superior oxidation resistance and wear life at elevated speeds in stainless steels (ISO M15-M30) and superalloys (ISO S).
- TT9235 / TT9080: Higher-toughness PVD grades recommended when machining heavily interrupted stainless steel surfaces or unstable setups prone to shock loads.
- TT8125 / TT8115: Thick CVD coated grades engineered primarily for high-speed turning of carbon and alloy steels (ISO P).
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Technical Engineering Support
On-staff tooling specialists available for speed and feed recommendations.
Frequently Asked Questions
Q: What is the difference between VNMG160408MT and VNMG160408-MT?
A: They denote the exact same geometry and chipbreaker design. The hyphen is frequently used in ordering catalogs to separate the nose radius and chipbreaker code.
Q: What does the "MT" chipbreaker signify on TaeguTec inserts?
A: "MT" stands for Medium Turning. It features a strengthened cutting edge land that protects the slender 35° tip from chipping while breaking chips cleanly across moderate feeds and depths of cut.
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.