Tungaloy 11IR 2.0ISO-B AH725 Internal Threading Carbide Insert (10pcs)

Name: Tungaloy 11IR 2.0ISO-B AH725 Internal Threading Carbide Insert (10pcs)
Brand: BEYOND
SKU: 11IR20ISO-BAH725
Price: 93.47 USD
Availability: InStock

$93.47 USD

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Description

Description

TUNGALOY 11IR 2.0ISO-B AH725

Internal ISO Metric Specialist | 2.0mm Pitch | AH725 Nano-PVD Grade

Product Overview

The Tungaloy 11IR 2.0ISO-B AH725 is a high-performance internal threading insert designed for 2.0mm pitch ISO metric threads, the standard for M14 and M16 coarse fasteners. This indexable carbide insert features the advanced AH725 PVD coated carbide grade, delivering superior edge toughness and thermal stability for high-reliability CNC machining. The specialized "-B" chipbreaker geometry is essential for internal operations, providing aggressive chip curling to prevent "bird-nesting" inside the bore. Made in Japan, this insert is the professional choice for precision machining in stainless steel, carbon steel, and heat-resistant alloys.

Technical Designation Breakdown

11
Size (IC)

I
Internal

R
Right Hand

2.0
Pitch (mm)

ISO
Standard

B
Chipbreaker

Technical Specifications: Metric vs. Imperial

Technical Feature	Metric (ISO)	Imperial (TPI)
Thread Pitch	2.0 mm	12.7 Threads Per Inch
Inscribed Circle (IC)	6.35 mm	1/4 inch
Application	Internal M14/M16	Heavy Duty Coarse

Pitch Selection Guidance: The 2.0ISO is a Full Profile insert. This ensures the insert forms the complete thread—crest, root, and flank—in one cycle. This is critical for internal threading, as it guarantees the correct minor diameter and profile geometry, eliminating the need for separate deburring or bore diameter adjustments.

Material: AH725 PVD Nano-Coating

The AH725 grade is Tungaloy's premium choice for stainless steel turning and threading. It features a micro-grain carbide substrate with a multilayered PVD coating. This long-tail keywords industry favorite provides exceptional resistance to notch wear and built-up edge, resulting in significantly extended tool life in tough machining environments.

-B Geometry: Advanced Chip Control (槽型)

Efficient chip evacuation is vital for internal work. The -B chipbreaker forces chips to curl tightly, breaking them into manageable lengths that flush out easily. This prevents tool breakage and ensures the mirror-like surface finish required in precision machining.

Recommended Cutting Parameters

Optimized for P (Steel) and M (Stainless Steel):

Cutting Speed (Vc): 70 - 140 m/min (230 - 460 SFM)
Total Radial Depth: 1.23 mm
Number of Passes: 12 - 18 passes (Recommended for 2.0 pitch)

*Pro Tip: For larger 2.0mm pitches, use a modified flank infeed (29°) to reduce cutting forces and prevent vibration in the boring bar.*

Global Verified Reviews

⭐⭐⭐⭐⭐ "Reliable for M16 Threads" - Dieter M., Germany
"The 2.0 pitch is perfect. The chip control inside the bore is much better than standard inserts we used before."

⭐⭐⭐⭐⭐ "Tough in Stainless" - Hiroki S., Japan
"Using AH725 on 304 stainless steel. Excellent tool life and consistent profile accuracy. Genuine Tungaloy quality."

⭐⭐⭐⭐ "Great Chip Management" - James R., USA
"The -B geometry really helps. No more bird-nesting in my internal threading cycles."

⭐⭐⭐⭐⭐ "Smooth Surface Finish" - Luigi P., Italy
"Thread flanks are very clean. Perfect for high-pressure hydraulic fittings."

⭐⭐⭐⭐⭐ "Best Wholesale Value" - Ben W., UK
"Fast shipping and original Japanese inserts. These last a long time on our CNC lathes."

Technical Q&A

Q: Which boring bar should I use?

A: This fits any internal threading holder with an 11-size (1/4" IC) pocket, such as the **SNR0013M11** or **SNR0016Q11**.

Q: Can I cut external threads with this?

A: No. This is an **11IR** (Internal Right-hand). For external work, you require the **11ER** series.

Q: Is AH725 suitable for Titanium alloys?

A: Yes! AH725 is a high-toughness PVD grade designed for steel, stainless, and heat-resistant superalloys like Titanium and Inconel.

Expert Machining Tip: Grade Selection

For internal threading, PVD grades like **AH725** are superior to CVD grades because they maintain a sharper cutting edge. This sharpness is essential in internal bores to reduce radial cutting force and prevent thread "tearing," leading to much better tool life.

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.