Tungaloy 11IR 1.0ISO-B AH725 Internal Threading Carbide Insert (10pcs) - BEYOND

Tungaloy 11IR 1.0ISO-B AH725 Internal Threading Carbide Insert (10pcs)

$93.47 USD

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Description

TUNGALOY 11IR 1.0ISO-B AH725

Metric Internal Specialist | 1.0mm Pitch | AH725 Nano-PVD Coating

Product Overview

The Tungaloy 11IR 1.0ISO-B AH725 is a high-precision internal threading insert designed for 1.0mm pitch ISO metric threads, a standard for M6 and M7 industrial fasteners. This indexable carbide insert features Tungaloy's premium AH725 PVD coated carbide grade, renowned for its exceptional balance of wear resistance and toughness during CNC machining. The specialized "-B" chipbreaker geometry is engineered for internal applications, ensuring effective chip curling to protect the finished thread surface. For precision machining in stainless steel, carbon steel, and heat-resistant alloys, this Japan-made tool offers world-class reliability and surface finish quality.

Technical Designation Breakdown

11
Size (IC)
I
Internal
R
Right Hand
1.0
Pitch (mm)
ISO
Standard
B
Chipbreaker

Technical Specifications: Metric vs. Imperial

Technical Feature Metric (ISO) Imperial (TPI)
Thread Pitch 1.0 mm 25.4 Threads Per Inch
Inscribed Circle (IC) 6.35 mm 1/4 inch
Application Internal M6 x 1.0 Fine Thread equivalent

Pitch Selection Guidance: The 1.0ISO is a Full Profile insert. This ensures the insert forms the complete thread—crest, root, and flank—in one operation. This is critical for maintaining the correct minor diameter in internal threading, ensuring the fastener fits perfectly without manual adjustments to the pre-drilled hole size.

Material: AH725 PVD High-Toughness Carbide

The AH725 grade is Tungaloy's specialized PVD coating over a micro-grain carbide substrate. This long-tail keywords industry favorite is optimized for stainless steel turning and threading. Its unique coating architecture provides extreme resistance to thermal cracking and notch wear, significantly extending tool life even in high-speed applications.

-B Geometry: Internal Chip Control Specialist

In internal threading, chip evacuation is the primary challenge. The -B chipbreaker (槽型) is engineered with a specific rake angle and chip pocket that forces chips to curl tightly. This prevents chips from being crushed against the finished thread, a vital requirement for precision machining.

Recommended Cutting Parameters

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

  • Cutting Speed (Vc): 80 - 160 m/min (260 - 520 SFM)
  • Total Radial Depth (ap): 0.61 mm
  • Number of Passes: 6 - 10 passes (Recommended for 1.0 pitch)

*Pro Tip: For 1.0mm pitch internal threads, always use a rigid boring bar with the shortest possible overhang to maintain profile accuracy.*

Global Verified Reviews

⭐⭐⭐⭐⭐ "Perfect for M6 Production" - Stefan K., Germany
"Very consistent 1.0 pitch. The -B chipbreaker is a lifesaver for internal work in 304 stainless."

⭐⭐⭐⭐⭐ "Original Tungaloy Quality" - Robert K., USA
"AH725 is incredibly tough. Tool life is significantly better than our previous supplier. Highly recommended."

⭐⭐⭐⭐ "Very Sharp and Stable" - Takumi H., Japan
"Tungaloy original. Very clean threads. The full profile trims the crest perfectly."

⭐⭐⭐⭐⭐ "Mirror Finish" - Luca B., Italy
"Excellent surface quality. The chips break perfectly so they don't scratch the bore."

⭐⭐⭐⭐⭐ "Top Notch Durability" - Liam S., UK
"Solid performance on our CNC lathe. Fits the SNR0010 holder perfectly. Very fast shipping."

Technical Q&A

Q: Can I use this for external threads?

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

Q: Which tool holder is compatible?

A: It fits standard threading boring bars with an 11-size pocket (1/4" IC), such as the **SNR0010K11** or **SNR0012M11**.

Q: Is AH725 good for Titanium?

A: Yes! AH725 is a high-toughness PVD grade designed for steel, stainless, and difficult-to-cut superalloys like Titanium.

Expert Machining Tip: Grade Comparison

For internal threading, PVD grades like **AH725** are superior to CVD grades because they maintain a sharper cutting edge. This sharpness is essential to prevent thread "tearing" in gummy materials like 300-series stainless steel, leading to better tool life and profile accuracy.

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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.