Tungaloy VNMG160412-TM T9115 CNC Turning Insert for Steel (ISO P), CVD Coated Carbide
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Tungaloy VNMG160412-TM T9115 (VNMG333)
Heavy-Duty Medium Cutting Insert for High-Speed Steel Turning
Product Overview
"Which insert offers the best edge strength for high-feed steel turning with excellent chip control?"
The Tungaloy VNMG160412-TM T9115 is a 35° rhombic negative insert engineered for maximum productivity. With a 1.2mm (R1.2) nose radius, this model provides significantly higher edge strength and surface finish stability compared to the 0.8mm version. It features the industry-leading T9115 CVD grade, optimized for ISO P steel machining, and the TM chipbreaker which balances cutting force and chip evacuation.
Key Performance Features
- Premium T9115 Grade: Multi-layered CVD coating (TiCN + Al2O3) provides extreme wear resistance at high temperatures.
- Reinforced 1.2mm Radius: Superior edge toughness, perfect for larger feed rates and reducing tool breakage in heavy-duty applications.
- TM (Turning Medium) Geometry: Specialized chipbreaker designed to prevent long, stringy chips in carbon and alloy steels.
- Double-Sided Efficiency: 4 cutting edges per insert deliver a lower cost-per-edge for high-volume CNC production.
Technical Specifications
VNMG 16 04 12 - TM Breakdown
35° Rhombic
0° Relief
Tolerance
Hole/Type
16mm Edge
4.76mm Thk
1.2mm Rad
Medium Breaker
| Metric Model | ANSI/Inch Model | Nose Radius (RE) | Main Grade |
|---|---|---|---|
| VNMG160412-TM | VNMG333-TM | 1.2 mm (3/64") | T9115 (CVD) |
Recommended Cutting Parameters (Steel)
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Low/Med Carbon Steel | 180 - 400 m/min | 0.20 - 0.50 mm/rev | 1.5 - 5.0 mm |
Applications & Tooling Compatibility
Optimized for medium to heavy turning of steel components in Automotive, Energy, and General Machining sectors.
Recommended Standard Toolholders:
MVJNR/L | MVVNN | MVQNR/L (Standard 1604/33x Holders)
Browse Compatible Toolholders →Material Comparison: Which T-Grade do you need?
| Grade | Primary Focus | Application Case |
|---|---|---|
| T9115 | High Speed & Stability | Continuous cutting, best wear resistance. |
| T9125 | Versatility & Toughness | Interrupted cuts, unstable setups. |
Customer Success Stories
"The 1.2mm radius on the VNMG160412 is a beast. We increased feed rate by 30% compared to the 0.8mm version."
— David T., USA 🇺🇸"T9115 grade is very predictable. No sudden flaking during high-speed runs on 42CrMo4."
— Marco V., Italy 🇮🇹"Excelente control de viruta. Muy recomendable para tornos CNC."
— Carlos P., Mexico 🇲🇽"Strong edge. Good for roughing to semi-finishing in one go."
— Kenji A., Japan 🇯🇵Frequently Asked Questions
1. Can the VNMG160412-TM be used for finishing?
While it can finish, the 1.2mm radius is better suited for medium to heavy cutting. For fine finishing, consider a 0.4mm radius with the -TS chipbreaker.
2. What is the benefit of the T9115 coating?
It uses Tungaloy's premium CVD technology with a thick Al2O3 layer, which prevents heat deformation at speeds up to 400 m/min.
3. Is this compatible with MVJNR holders?
Yes, it fits all standard 35° VNMG 1604 (VNMG 33x) style toolholders.
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.