Tungaloy DCGT11T304N-JS AH725 Precision Finishing Turning Insert

$89.66 USD

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Description

Tungaloy DCGT11T304N-JS AH725 Turning Insert

Precision Finishing Master | AH725 Multi-Purpose PVD | Made in Japan

What is the most reliable insert for finishing steel and stainless steel?

The Tungaloy DCGT11T304N-JS AH725 is a high-performance precision machining solution engineered for finishing operations where edge toughness and surface quality are paramount. Utilizing the versatile AH725 PVD grade, this insert features a high-toughness carbide substrate paired with a wear-resistant coating, making it ideal for CNC machining of carbon steel, alloy steel, and stainless steel. The -JS chipbreaker is specifically optimized for light-duty finishing, providing a sharp cutting edge that reduces cutting resistance and prevents the formation of built-up edge (BUE). This Japan-made indexable turning tool with a 0.4mm corner radius offers enhanced edge strength compared to smaller radii, ensuring extended tool life and stable dimensional accuracy. By integrating this long-tail keywords optimized insert into your production, you achieve superior surface finishes even in demanding conditions.

Decoding the DCGT11T304N-JS Technical Nomenclature

D
55° Rhombic
C
7° Clearance
G
G Tolerance
T
Hole & Screw
11
11.6mm Edge
T3
3.97mm Thick
04
0.4mm Radius
N-JS
Finishing JS

Technical Specs: Metric vs. Imperial Comparison

Standard Detail Metric Designation Imperial Designation
ISO / ANSI Model DCGT11T304N-JS DCGT32.51-JS
Inscribed Circle (IC) 9.525 mm 3/8 inch
Thickness (S) 3.97 mm 5/32 inch
Corner Radius (RE) 0.4 mm 0.016 inch

How does the AH725 grade and JS chipbreaker improve machining stability?

The AH725 PVD Grade is a versatile coating designed for high-precision finishing. It offers excellent balance between wear resistance and fracture toughness. In precision machining, the -JS chipbreaker utilizes a highly positive rake angle to curl chips efficiently at low feeds, preventing surface damage. The 0.4mm corner radius on the DCGT11T304N-JS provides better edge longevity than smaller variants, making it suitable for slightly higher feed rates while maintaining an exceptional surface Ra. This indexable turning tool is a staple for CNC machining workshops that require reliable, long-lasting inserts for finishing steels and stainless alloys.

Recommended Cutting Parameters for AH725

  • Cutting Speed (Vc): 70 - 190 m/min
  • Feed Rate (f): 0.05 - 0.15 mm/rev
  • Depth of Cut (ap): 0.2 - 1.5 mm

*Pro Tip: Ensure stable workholding and use high-pressure coolant to maximize the performance of the AH725 grade.*

Feedback from Global Precision Workshops

⭐⭐⭐⭐⭐ "Workhorse Insert" - Robert T., USA
"The 11T304 is our go-to for finishing alloy steels. The AH725 grade is incredibly stable and the tool life is predictable shift after shift."

⭐⭐⭐⭐⭐ "Excellent Chip Breaking" - Hans L., Germany
"The JS breaker is fantastic. No more 'bird nests' when turning stainless steel. The surface finish is mirror-like."

⭐⭐⭐⭐ "Very Sharp Edge" - Luca G., Italy
"Tungaloy quality is always top-notch. Sharp edges and very consistent G-tolerance for precision work."

⭐⭐⭐⭐⭐ "Perfect for Swiss Machining" - Akira H., Japan
"Using these on our Citizen lathes. The dimensional stability is excellent. Very reliable for finishing small components."

⭐⭐⭐⭐⭐ "Authentic Quality" - Mark S., UK
"Original Tungaloy inserts delivered on time. Performance matches the catalog specs exactly. High recommended for stainless."

Technical Tooling Q&A

Q: Can I use this insert for medium cutting?

A: While it is a finishing insert, the 0.4mm radius and AH725 grade allow for light-to-medium finishing. For heavy roughing, we suggest a dedicated roughing geometry.

Q: What materials are best for the AH725 grade?

A: AH725 is a multi-purpose grade. It is excellent for Steel (P), Stainless Steel (M), and Heat Resistant Alloys (S).

Q: Which tool holder do I need?

A: This insert fits any standard ISO holder designed for DCGT 11T3 inserts, such as the SDJCR/L series or SDNCN holders.

Expert Insight: PVD Coating Advantage

For precision machining where surface finish is critical, PVD Coated Carbide (AH725) is superior to CVD. The thinner, smoother coating allows for a much sharper cutting edge, which is essential for low-force finishing and maximizing tool life.

© Technical Content by cnchome-beyond.com - Japan Tooling Excellence

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.