Tungaloy WNMG080404-SM AH725 Carbide Turning Insert for Stainless Steel
Price shown is a starting point. Contact us for a precise quote based on your requirements.
Tungaloy WNMG080404-SM AH725 Turning Insert
High-Stability PVD Coated Solution for Stainless Steel & Superalloys
Product Overview
"Which insert grade is most reliable for medium-duty turning of gummy stainless steel and heat-resistant superalloys while preventing notch wear?"
The Tungaloy WNMG080404-SM AH725 is specifically engineered to handle the thermal and mechanical stresses of difficult-to-cut materials. Featuring the versatile AH725 PVD grade, this insert utilizes a high-Al content AlTiN coating that provides superior resistance to oxidation and wear. The SM (Medium-cut) chipbreaker is designed with a sharp cutting edge and a specific rake angle that promotes smooth chip evacuation and reduces cutting forces, making it ideal for ISO M (Stainless Steel) and ISO S (Heat Resistant Alloys) machining.
Key Features
- AH725 High-Performance Grade: PVD coated carbide with balanced toughness and wear resistance for challenging alloys.
- SM Chipbreaker Geometry: Large rake angle design minimizes built-up edge (BUE) and ensures stable chip breaking.
- Heat Resistance: AlTiN coating maintains hardness even at high cutting zone temperatures.
- ISO Standard Geometry: Trigon (80°) design provides 6 usable cutting edges for maximum economic efficiency.
Technical Specifications
| Attribute | Metric (ISO) | Imperial (ANSI) |
|---|---|---|
| Model Number | WNMG080404-SM | WNMG431-SM |
| Nose Radius | 0.4 mm | 0.016 inch |
| Cutting Speed (Vc) | 50 - 150 m/min | 165 - 490 sfm |
| Feed Rate (fn) | 0.12 - 0.40 mm/rev | .005 - .016 ipr |
| Depth of Cut (ap) | 1.0 - 3.5 mm | .040 - .138 inch |
View Compatible Tooling Holders →
Primary Applications
- Austenitic Stainless Steel (304, 316, 316L).
- Heat-resistant Alloys (Inconel, Titanium).
- General turning and profiling of ductile materials.
- Components for Medical, Aerospace, and Oil/Gas industries.
Machine Compatibility
Optimized for all CNC Lathes and Multi-tasking Machines. Compatible with Fanuc, Mazak, Haas, Okuma, and Siemens-controlled turning centers.
Tungaloy Grade Comparison
| Grade | Coating | Best Use Case |
|---|---|---|
| AH725 | PVD (AlTiN) | General Purpose / Stainless Steel |
| AH630 | PVD | Stainless High Wear Resistance |
| T9225 | CVD | Steel Turning / High Speed |
Verified Customer Performance
"Outstanding tool life in 316 stainless. The SM chipbreaker handles the stringy chips perfectly."
— Mark D., USA"AH725 è la scelta sicura per Inconel. Molto stabile anche con piccoli urti."
— Roberto F., Italy"Excellent chip control during medium turning. Tungaloy quality is unmatched for aerospace parts."
— Hans G., Germany"Robust and predictable. Works exactly as the specs say."
— Kenji S., JapanFrequently Asked Questions
Q: Why choose AH725 PVD over a CVD grade for stainless steel?
A: PVD coatings are thinner and have a sharper edge compared to CVD coatings, which reduces cutting forces and prevents built-up edge common in gummy stainless steels.
Q: Is the SM chipbreaker good for finishing?
A: The SM is optimized for medium cutting. For fine finishing at lower feed rates, consider the SS or SF chipbreakers from Tungaloy.
Q: What is the benefit of the Trigon shape?
A: The WNMG shape (80° Trigon) offers the strength of a CNMG insert but provides 6 usable edges instead of 4, significantly reducing cost-per-edge.
Material Tip: To extend the life of your AH725 inserts in Titanium or Nickel alloys, ensure high-pressure coolant is directed precisely at the tool tip to manage thermal deformation.
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.