Tungaloy VBMT160404-PS AH725 PVD Carbide Turning Insert for Steel Finishing - BEYOND

Tungaloy VBMT160404-PS AH725 PVD Carbide Turning Insert for Steel Finishing

$79.89 USD

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

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Description

Tungaloy VBMT160404-PS AH725 Insert

Professional 35° Rhombic Profiling | AH725 PVD Grade | 0.4mm Radius

What is the recommended insert for high-precision profiling in alloy steel?

The Tungaloy VBMT160404-PS AH725 is a high-performance 35-degree rhombic turning insert engineered for intricate profiling and finishing. The 16mm edge length provides a larger engagement area suitable for medium-sized components while maintaining the extreme precision required for finish passes. The AH725 PVD grade is a "universal" finishing solution, offering a perfect balance between wear resistance and toughness. Combined with the -PS (Positive Sharp) chipbreaker, this insert minimizes cutting forces, making it ideal for lathes where vibration suppression and surface Ra quality are the top priorities.

Multi-Material AH725 Grade

A specialized nano-PVD coating that prevents built-up edge (BUE) on stainless steel and resists thermal cracking in alloy steels.

-PS Precision Chipbreaker

Optimized for small depths of cut, ensuring that chips break effectively even in ductile materials, protecting the finished surface from scratches.

Superior Profiling Clearance

The 35° "V" shape allows the tool to reach into tight corners and complex contours where standard 80° (C) or 55° (D) inserts cannot.

Decoding VBMT 160404-PS Nomenclature

V
35° Rhom
B
5° Relief
M
Tolerance
T
Hole/Sinter
16
16mm
04
4.76mm
04
0.4 Rad
-PS
Sharp

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

Attribute Metric (ISO) Imperial (ANSI)
Standard Model VBMT160404-PS VBMT 331-PS
Inscribed Circle (IC) 9.525 mm 3/8"
Thickness (S) 4.76 mm 3/16"
Corner Radius (RE) 0.4 mm 1/64"

Optimized Cutting Parameters

  • Cutting Speed (Vc): 90 - 260 m/min
  • Feed Rate (f): 0.05 - 0.20 mm/rev
  • Depth of Cut (ap): 0.2 - 2.0 mm

4. Primary Applications

  • Precision turning and profiling of steel shafts and housings.
  • Finishing passes in 304/316 stainless steel where Ra is critical.
  • Aerospace and Medical grade machining for intricate parts.
  • Copy turning and undercutting operations.

5. Tool Compatibility

Designed for standard ISO VBMT 1604 pockets. Highly compatible with SVJCR/L external tool holders and SVUCR/L internal boring bars. Perfect for Citizen Swiss-type, Mazak, Haas, and DMG Mori CNC Lathes.

6. Tungaloy Material Selection Guide

Grade Coating Best Use Case Performance
AH725 PVD Stainless & Steel Finishing High Sharpness & Adhesion Resistance
T9125 CVD High-Speed Steel Machining Thermal Stability at High Velocity
NS9530 Uncoated Cermet Finishing Ultimate High-Gloss Finish

7. Why Source from CNCHome-Beyond?

100% Genuine
Original Tungaloy Japan
Technical B2B Support
Expert Process Tuning
Fast Global Delivery
Express Logistics

Professional Machinist Feedback

⭐⭐⭐⭐⭐ "Mirror Surface on 316L" - Luc D., France
"The AH725 grade and -PS breaker combination is the only way we can hold tight tolerances on our stainless shafts. Outstanding tool life."

⭐⭐⭐⭐⭐ "Best Profiling Tool" - Kenji S., Japan
"Consistent results. The 16mm size gives us more stability than the smaller 11mm inserts for our larger CNC lathe parts."

⭐⭐⭐⭐⭐ "Authentic Quality" - Marcus W., USA
"Verified original Tungaloy stock from Beyond Li. Arrived quickly and the technical advice provided was spot on for our project."

8. FAQ - Engineering Support

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

A: Generally, yes. The PVD coating of AH725 is thinner and sharper, which helps prevent the built-up edge and chipping common in stainless steel finishing.

Q: What holder does this insert fit?

A: This is an ISO VBMT 1604 type. It fits standard SVJCR/L or SVUCR/L holders with a 16mm pocket size.

Tech Tip: Optimized Profiling Performance

The **35° V-geometry** is sensitive to vibration. For the best surface finish with the **0.4mm radius**, ensure your tool holder has the shortest possible overhang. Maintaining the recommended cutting speed (Vc) is crucial to activating the **AH725 coating** benefits. **Tungaloy Japan** - Excellence in Every Cut.

© Technical Content by cnchome-beyond.com - Global CNC Tool 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.