Sandvik Coromant TNMG 16 04 08-QM 4425 Carbide Turning Insert（10pcs）
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TNMG 16 04 08-QM 4425
Premium Steel Turning Insert | T-Max® P Geometry
Product Overview
The Sandvik Coromant TNMG 16 04 08-QM 4425 is a high-performance triangular carbide insert designed for medium machining applications in steel (P-class). Part of the T-Max® P family, this insert utilizes the cutting-edge GC4425 Grade with Inveio® coating technology for unmatched wear resistance and tool life.
Metric vs Inch Reference:
| System | Designation |
|---|---|
| Metric (ISO) | TNMG 16 04 08-QM |
| Inch (ANSI) | TNMG 332-QM |
Technical Details
- Grade: 4425 (Advanced Inveio® Technology for Steel)
- Chipbreaker (Geometry): QM (Optimized for Medium Machining)
- Shape: Triangular (60-degree)
- Coating: Ti(C,N) + Al2O3 + TiN
- Compatible Tool Holders: View compatible TNMG 1604 Tool Holders
Grade & Geometry Deep Dive
Grade 4425: Specifically engineered for steel turning, this grade offers superior thermal protection and crater wear resistance. It's the industry standard for stable and predictable performance in large batch production.
QM Geometry: The "QM" chipbreaker is a versatile geometry for medium-duty steel turning. It balances low cutting forces with excellent chip control, preventing "bird-nesting" even at varying depths of cut.
Recommended Cutting Parameters
| Parameter | Metric Value | Inch Value |
|---|---|---|
| Cutting Speed (vc) | 200 - 450 m/min | 655 - 1475 sfm |
| Feed Rate (fn) | 0.15 - 0.40 mm/rev | 0.006 - 0.016 in/rev |
| Depth of Cut (ap) | 0.5 - 4.0 mm | 0.020 - 0.157 in |
*Values may vary based on workpiece material hardness and machine stability.
Pro Tip: Grade Comparison
Looking for more heat resistance? Choose 4415 for continuous cuts at higher speeds. Dealing with interrupted cuts or heavy vibrations? Switch to 4425 for a perfect balance of toughness and wear resistance. For extremely unstable conditions, consider 4335.
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.