Tungaloy TNMG160408-TM AH725 PVD Coated Carbide Turning Insert for Steel and Stainless - BEYOND

Tungaloy TNMG160408-TM AH725 PVD Coated Carbide Turning Insert for Steel and Stainless

$65.32 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

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Description

Tungaloy TNMG160408-TM AH725 Turning Insert

Tough PVD Grade | TM Medium-Cutting Geometry | 0.8mm Radius for Stability

What is the most versatile carbide insert for stainless and alloy steel?

The Tungaloy TNMG160408-TM AH725 is a high-performance, double-sided triangular insert engineered for multi-material excellence. Utilizing Tungaloy’s proprietary AH725 PVD coating, this insert is specifically designed to resist chipping and thermal shock, making it ideal for both continuous and light interrupted cuts. The -TM chipbreaker serves as the "all-rounder" for medium-range cutting depths, ensuring excellent chip control and lowering cutting resistance. With a robust 0.8mm corner radius, it provides superior edge strength for medium turning operations in Steel (P), Stainless Steel (M), and Heat-Resistant Alloys (S). 100% Made in Japan quality.

AH725 PVD Grade

A balance of high hardness and extreme toughness. The PVD coating maintains a sharp cutting edge, preventing Built-Up Edge (BUE) on gummy stainless steels.

TM Medium Chipbreaker

Designed with a balanced land and rake angle to cover a wide range of feed rates. It breaks chips efficiently, preventing long nests that can damage the workpiece.

6-Edge Triangular Design

Maximize your tooling budget. The double-sided TNMG design offers 6 cutting edges per insert, reducing the cost-per-part in high-volume CNC production.

Decoding TNMG 160408-TM Nomenclature

T
Tri
N
0°
M
Tol.
G
Clamp
16
Size
04
Thk
08
0.8 Rad
-TM
Chip

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

Technical Feature Metric (ISO) Imperial (ANSI)
Standard Model TNMG160408-TM TNMG 332-TM
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

  • Steel (P): Vc: 120 - 280 m/min | f: 0.15 - 0.45 mm/rev
  • Stainless (M): Vc: 80 - 190 m/min | f: 0.12 - 0.35 mm/rev
  • Depth of Cut (ap): 0.8 mm - 4.5 mm

*Pro-Tip: Use high-pressure coolant when machining stainless steel to maximize the life of the AH725 PVD coating.*

4. Primary Applications

  • General turning of carbon steel, alloy steel, and pre-hardened steel.
  • Excellent performance on 304, 316, and duplex stainless.
  • Boring and external turning requiring 0.8mm radius stability.
  • Versatile for both continuous and light interrupted cuts.

5. Tool Compatibility

Standard ISO TNMG 1604 fit. Pairs with MTJNR/L, WTJNR/L, or DTGNR/L tool holders. Compatible with Haas, Mazak, Doosan, and Okuma CNC systems.

7. Why Source from CNCHome-Beyond?

100% Original
Tungaloy Japan Stock
Technical B2B Support
Machining Expertise
Fast Global Shipping
Air Express Available
Quality Verified
Sealed Original Boxes

What Global Machinists Say

⭐⭐⭐⭐⭐ "Reliable All-Rounder" - James K., USA
"The AH725 grade is our go-to for job shop work. Whether it's 1018 or 316, the TM chipbreaker just works. Great value for 6 edges."

⭐⭐⭐⭐⭐ "Authentic Tungaloy" - Markus D., Germany
"Received original sealed packaging. The tool life is superior to generic brands. The 0.8mm radius is very stable for medium cuts."

⭐⭐⭐⭐ "Great Chip Management" - Hiroshi S., Japan
"Using these for stainless steel valves. The chip control is predictable, which is vital for our automated cell."

⭐⭐⭐⭐⭐ "Fast Shipping" - Carlos M., Mexico
"Beyond always provides genuine stock. The technical advice helped us optimize our feed rates for better finish."

⭐⭐⭐⭐⭐ "Solid Performance" - Rajesh V., India
"Best price for genuine Japan-made inserts. The toughness of AH725 is unmatched for light interrupted cuts."

8. FAQ - Professional Support

Q: Is AH725 better than CVD grades for stainless steel?

A: For light to medium cuts and finishing, AH725 (PVD) is often superior because it has a sharper edge and higher toughness, which prevents chipping on gummy materials like stainless.

Q: Can I use this for heavy roughing steel?

A: The -TM geometry is designed for medium cutting. For very heavy roughing, we recommend the -TH or -TH chipbreakers with a larger corner radius for maximum edge strength.

Q: What tool holder do I need for this insert?

A: This is a standard 16-size (ISO) insert. Any TNMG 1604 or TNMG 33 series holder will fit, such as an MTJNR 2525 M16.

Tech Tip: PVD vs CVD Application

The **AH725 PVD grade** provides a sharper edge than CVD coatings, reducing cutting pressure and heat on the workpiece. This makes it the premier choice for stainless steel and high-temp alloys where surface finish is critical. **Tungaloy Japan** - Engineering excellence for global industry.

© Technical Content by cnchome-beyond.com - Global B2B CNC Authority

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.