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

Price shown is a starting point. Contact us for a precise quote based on your requirements.

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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
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

Are your carbide inserts interchangeable with major brands like Sandvik, Iscar, or Kennametal?

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.

How do I choose the correct insert grade and chipbreaker for machining Stainless Steel (M) vs. Carbon Steel (P)?

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.
What are the recommended cutting speed (Vc) and feed rate (f) parameters to maximize tool life?

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.
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.