Tungaloy WNMG080408-SM AH725 Carbide Turning Insert for Stainless Steel
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WNMG080408-SM AH725 Turning Insert
High-Performance PVD Solution for Stainless Steel & HRSA
Product Overview
"Which insert grade is most reliable for medium-duty turning of gummy stainless steel and heat-resistant alloys while preventing notch wear?"
The Tungaloy WNMG080408-SM AH725 is engineered to conquer the thermal challenges of difficult-to-cut materials. Utilizing the AH725 PVD grade (AlTiN coated), it provides an ideal balance of toughness and oxidation resistance. The SM chipbreaker (Medium-cut) features a specifically honed cutting edge that reduces cutting forces and effectively breaks chips in long-chipping materials like 304 and 316 stainless steel.
Core Performance Advantages
- Premium AH725 Grade: PVD (Physical Vapor Deposition) coating ensures a sharp cutting edge and resists built-up edge (BUE).
- Enhanced 0.8mm Nose Radius: Provides higher edge strength for medium cutting compared to finishing-oriented radii.
- SM Geometry: A stable chipbreaker designed for medium cutting range, effectively managing chip evacuation in ductile metals.
- Trigon Economy: Six usable cutting edges per insert, reducing tool costs significantly over four-edge designs.
Technical Specifications
| Parameter | Metric (ISO) | Imperial (ANSI) |
|---|---|---|
| Model Code | WNMG080408-SM | WNMG432-SM |
| Cutting Speed (Vc) | 50 - 150 m/min | 165 - 490 sfm |
| Feed Rate (fn) | 0.15 - 0.40 mm/rev | .006 - .016 ipr |
| Depth of Cut (ap) | 1.0 - 3.5 mm | .040 - .138 in |
Shop Compatible Boring Bars & Tool Holders →
Common Applications
- Austenitic Stainless Steel (304, 316L, 317).
- Heat-Resistant Superalloys (Inconel, Titanium).
- General Medium Turning & Profiling.
- Industries: Aerospace, Medical, and Oil & Gas.
Device Compatibility
Universal fit for CNC Turning Centers, Lathes, and Multi-tasking Machines from Mazak, Haas, Okuma, DMG Mori, and Fanuc systems using ISO standard holders.
Tungaloy Material Grade Matrix
| Grade | Coating Type | Best For |
|---|---|---|
| AH725 | PVD (Sharp Edge) | Stainless/Superalloys |
| T9215 | CVD (Thick Layer) | High-Speed Steel Turning |
| AH120 | PVD (Tough) | Cast Iron/Interrupted Cuts |
Global Customer Testimonials
"Outstanding life in 316 Stainless. The SM chipbreaker handles the gummy chips without breaking the tool."
— Mark R., USA"Eccellente su Inconel 718. Il grado AH725 resiste bene al calore."
— Giuseppe V., Italy"Exactly what we needed for our Okuma lathe. Clean cuts and consistent tolerances."
— Kenji H., Japan"Gute Spanabfuhr bei Edelstahl. Preis-Leistung ist unschlagbar."
— Dirk S., GermanyFrequently Asked Questions
Q: Why choose PVD AH725 over CVD grades for stainless steel?
A: PVD coatings allow for a sharper cutting edge, which is essential for "gummy" materials like stainless to prevent built-up edge and surface tearing.
Q: Is this insert suitable for finishing?
A: The SM is a medium-cut breaker. For high-precision finishing, we recommend Tungaloy's SS or SF chipbreakers with a smaller nose radius.
Q: What is the benefit of the 0.8mm radius?
A: It provides a stronger cutting edge than the 0.4mm version, allowing for higher feed rates and better durability in medium turning.
Machining Pro Tip: When turning heat-resistant alloys, ensure high-pressure coolant is directed at the tool tip to maximize the life of the AH725 coating and prevent thermal cracking.
Need Help With BEYOND Inserts?
Looking for a BEYOND 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 BEYOND 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.