Tungaloy TNMG160404-TM AH725 PVD Coated Carbide Turning Insert for Steel and Stainless - BEYOND

Tungaloy TNMG160404-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 TNMG160404-TM AH725 Turning Insert

High-Performance PVD Grade | TM Medium-Cutting Geometry | Made in Japan

Which insert is best for general purpose steel and stainless turning?

The Tungaloy TNMG160404-TM AH725 is a versatile, high-rigidity turning insert designed for the demands of modern CNC shops. Featuring the legendary AH725 PVD coated grade, this insert excels in both carbon steels and difficult-to-cut stainless steels. The -TM chipbreaker is the industrial standard for medium-duty cutting, providing a perfect balance between chip control and edge strength. Whether you are performing continuous turning or light interrupted cuts, the TNMG 160404-TM provides stable tool life and superior surface integrity. 100% Made in Japan by Tungaloy Corporation.

AH725 PVD Grade

A premium PVD coating with a tough carbide substrate. Highly resistant to chipping and thermal shock, making it ideal for various materials and machining conditions.

TM Medium Geometry

Specifically engineered for medium cutting depths. It provides excellent chip evacuation across a wide range of feed rates, reducing machine downtime.

Double-Sided Design

Features 6 usable cutting edges per triangular insert, significantly lowering your cost-per-edge in high-volume production environments.

Decoding TNMG 160404-TM nomenclature

T
Tri
N
M
Tol.
G
Clamp
16
Size
04
Thk
04
0.4 Rad
-TM
Chip

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

Feature Metric (ISO) Imperial (ANSI)
Standard Model TNMG160404-TM TNMG 331-TM
Cutting Edge (L) 16.5 mm 0.650"
Inscribed Circle (IC) 9.525 mm 3/8"
Thickness (S) 4.76 mm 3/16"

Recommended Cutting Parameters

  • Cutting Speed (Vc): 100 - 250 m/min (Steel) | 70 - 180 m/min (Stainless)
  • Feed Rate (f): 0.15 - 0.40 mm/rev
  • Depth of Cut (ap): 1.0 - 4.0 mm

*Pro-Tip: When machining stainless steel, use high-pressure coolant to prolong the PVD coating life and prevent work-hardening.*

4. Primary Applications

  • General purpose machining of carbon and alloy steels (P-group).
  • Excellent for Austenitic stainless steels (M-group).
  • Suitable for both CNC lathes and conventional turning machines.
  • Ideal for machining shafts, bolts, and precision components.

5. Tool Compatibility

Fits all standard ISO/ANSI TNMG 1604 tool holders. Recommended for use with MTJNR/L, WTJNR/L, or DTGNR/L series tool holders. Compatible with major machine brands including Haas, Mazak, and DMG Mori.

7. Why Source from CNCHome-Beyond?

100% Original
Tungaloy Japan Supply
Expert Knowledge
B2B Industry Experts
Global Logistics
Fast International Air
Genuine Packaging
Factory Sealed Boxes

Customer Reviews from Professional Workshops

⭐⭐⭐⭐⭐ "Workhorse Grade" - James K., USA
"AH725 is a beast. We switch between 1045 steel and 304 stainless without changing the insert. The TM chipbreaker handles everything."

⭐⭐⭐⭐⭐ "Original Tungaloy" - Markus D., Germany
"Received in factory sealed boxes. The quality is noticeably better than generic alternatives. Best price/performance ratio."

⭐⭐⭐⭐ "Great for Interrupted Cuts" - Hiroshi S., Japan
"Consistent tool life even with light interruptions. The edge stays sharp for a long time. Very reliable supplier."

⭐⭐⭐⭐⭐ "B2B Support is Top" - Carlos M., Mexico
"Beyond helped us with the cutting parameters. The inserts work perfectly on our Mazak lathe. Will buy again."

⭐⭐⭐⭐⭐ "Superior Finish" - Alistair M., UK
"Excellent surface finish on our stainless components. AH725 really resists building up edge better than others."

8. FAQ - Machine Shop Technical Support

Q: Can I use AH725 for heavy roughing?

A: AH725 is a tough PVD grade, but the -TM geometry is optimized for medium cutting. For heavy roughing, we recommend the -TH or -TH chipbreakers with a larger corner radius.

Q: Is this insert compatible with all TNMG tool holders?

A: Yes, as long as the tool holder is designed for the 16 size (ISO) or 33 size (ANSI), the TNMG160404-TM will fit perfectly regardless of brand.

Q: What is the benefit of the TM chipbreaker?

A: The -TM (Medium) chipbreaker is designed for general purpose machining. It provides a wide application range for depths of cut and feed rates, making it very versatile for different jobs.

Tech Tip: PVD vs CVD Coatings

The **AH725 PVD grade** provides a sharper edge and higher toughness compared to CVD coatings. This makes it superior for stainless steel and machining small diameters where heat and edge integrity are critical. **Tungaloy Japan** - Excellence in Tooling Technology.

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