Tungaloy WNMG080404-SM AH725 Carbide Turning Insert for Stainless Steel
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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.
Need Help With Tungaloy Inserts?
Looking for a Tungaloy 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 Tungaloy 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.