Do you offer bulk discounts or wholesale pricing for machine shops and distributors?

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.

What is your international shipping policy and typical lead time for orders?

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.

How do you guarantee the quality and tolerance precision of your CNC tools?

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.

Tungaloy TNMG160408-SM AH725 PVD Carbide Turning Insert for Stainless Steel

Name: Tungaloy TNMG160408-SM AH725 PVD Carbide Turning Insert for Stainless Steel
SKU: TNMG160408-SM AH725
Price: 63.02 USD
Availability: InStock

$63.02 USD

✓ In Stock & Fast Dispatch: Order processing: typically 1–3 business days after confirmation.
✓ Global Shipping: Delivery: generally 5–20 business days, depending on destination and shipping method.
✓ Guaranteed Quality: Check model, dimensions and compatibility before ordering. | Direct Factory Outlet
✓ Technical Support: Need grade selection help? Contact Engineer

💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF

Description

Description

Tungaloy TNMG160408-SM AH725 Turning Insert

Professional PVD Coated Grade | SM Precision Geometry | Optimized for Stainless Steel

What is the best carbide insert for machining 304 and 316 stainless steel?

The Tungaloy TNMG160408-SM AH725 is a high-performance, double-sided triangular carbide insert specifically engineered for the challenges of machining stainless steel (M-group) and heat-resistant alloys. Featuring the world-class AH725 PVD coating, this insert provides an extremely sharp cutting edge that prevents work hardening and built-up edge (BUE). The -SM chipbreaker is designed for light-to-medium duty cutting, ensuring excellent chip evacuation and superior surface finishes. 100% Made in Japan, it is the industrial choice for high-precision CNC turning where reliability is paramount.

AH725 PVD Technology

Combines a tough, fine-grained carbide substrate with a specialized PVD coating. This provides the edge sharpness needed to "shear" sticky stainless steel materials effectively.

SM Finishing Geometry

The "Stainless Medium" chipbreaker features a positive rake and sharp edge. It significantly reduces cutting forces and heat generation during long production runs.

0.8mm Radius Balance

The 0.8mm corner radius offers the perfect equilibrium between edge strength for medium roughing and the precision required for high-quality finishing.

Decoding TNMG 160408-SM Nomenclature

T
Tri

N
0°

M
Tol.

G
Hole

16
Size

04
Thk

08
0.8 Rad

-SM
Chip

3. Technical Data: Metric (ISO) vs. Imperial (ANSI)

Technical Feature	Metric (ISO)	Imperial (ANSI)
Standard Model	TNMG160408-SM	TNMG 332-SM
Inscribed Circle (IC)	9.525 mm	3/8"
Thickness (S)	4.76 mm	3/16"
Corner Radius (RE)	0.8 mm	1/32"

Recommended Cutting Parameters (Stainless)

Cutting Speed (Vc): 80 - 180 m/min (Highly dependent on material hardness)
Feed Rate (f): 0.12 - 0.35 mm/rev
Depth of Cut (ap): 0.5 - 3.5 mm

*Optimization Note: When machining Duplex or sticky Austenitic alloys, prioritize high-pressure coolant to the cutting edge to enhance AH725 tool life.*

4. Primary Applications

Austenitic Stainless Steels (SUS304, SUS316, SUS303).
Precipitation Hardening Stainless (17-4PH).
High-Temperature Alloys and Super Alloys.
Medium-duty turning for aerospace and medical components.

5. Tool Compatibility

Compatible with all standard ISO TNMG 1604 pockets. Pairs perfectly with MTJNR/L, WTJNR/L, or DTGNR/L tool holder series. Fits Mazak, Haas, Okuma, and DMG Mori lathes.

7. Why Source from CNCHome-Beyond?

100% Genuine
Tungaloy Japan Stock

B2B Support
Technical Expertise

Express Logistics
Global Air Shipping

Sealed Quality
Factory Guaranteed

Global Shop Feedback

⭐⭐⭐⭐⭐ "Stainless Steel Solution" - Robert H., USA
"We were burning through inserts on 316L until we switched to AH725. The tool life doubled and the finish is amazing."

⭐⭐⭐⭐⭐ "Fast Shipping to EU" - Hans W., Germany
"Genuine Tungaloy product. Beyond provided fast shipping. The SM chipbreaker handles the long chips perfectly."

⭐⭐⭐⭐ "Very Stable" - Kenji T., Japan
"Consistent performance across different batches of stainless. Reliable choice for lights-out manufacturing."

⭐⭐⭐⭐⭐ "Top Grade" - Luca R., Italy
"The PVD coating on these is noticeably better than generic versions. Great edge toughness on interrupted cuts."

⭐⭐⭐⭐⭐ "Excellent ROI" - Sarah L., UK
"With 6 edges per insert and the longevity of the AH725 grade, our cost per part has dropped significantly."

8. FAQ - Professional Machining Support

Q: Can AH725 be used for Titanium?

A: Yes, AH725 is a multi-purpose PVD grade. While optimized for stainless steel, its sharp edge and high heat resistance make it an excellent choice for Titanium alloys.

Q: Why choose the 0.8mm radius over 0.4mm?

A: The 0.8mm radius is stronger and allows for higher feed rates. Choose 0.4mm only if you have strict corner radius requirements or thin-walled parts prone to vibration.

Q: Does this insert fit my standard tool holder?

A: It fits any standard ISO/ANSI 1604 (332) holder. Ensure your holder pocket is clean and the shim is not worn for best performance.

Tech Tip: PVD Edge Sharpness

The **AH725 PVD grade** is engineered to remain sharp. Unlike CVD coatings that can be slightly rounded, PVD maintains the "shearing" action necessary for stainless steel. This prevents work-hardening, ensuring your part stays within tolerance. **Tungaloy Japan** - Precision Redefined.

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.

EQUIVALENT FINDER Cross-Reference to 15 Brands Find equivalent grades from Sandvik, Iscar, Kyocera, Walter, Mitsubishi and 10 more. FREE CATALOG Download PDF Catalogs 15+ insert catalogs with grade, ISO code, and tolerance data sheets. GRADE TOOL Find the Best Grade Insert grade selector for steel, stainless, cast iron, and superalloys.

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This Tungaloy insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.

Technical FAQ & Buying Guide

How do I choose the correct specification?

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.

How can I check compatibility with my existing setup?

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.

What quantity and price unit am I 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.

How should I choose cutting parameters?

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.

Are bulk discounts available?

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.

When will my order ship and arrive?

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.