Tungaloy 16ER 1.5ISO-B AH725 External Threading Carbide Insert (10pcs) - BEYOND

Tungaloy 16ER 1.5ISO-B AH725 External Threading Carbide Insert (10pcs)

$94.43 USD

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Description

TUNGALOY 16ER 1.5ISO-B AH725

External ISO Metric Specialist | 1.5mm Pitch | AH725 Nano-PVD Grade

Product Overview

The Tungaloy 16ER 1.5ISO-B AH725 is a high-performance external threading insert engineered specifically for 1.5mm pitch ISO metric threads, the industrial standard for M10 coarse fasteners. This indexable carbide insert utilizes Tungaloy's premium AH725 PVD coated carbide, a grade famous for its extreme edge toughness and heat resistance during CNC machining. The integrated "-B" chipbreaker geometry is a game-changer for external threading, ensuring that chips are curled and broken instantly to prevent damage to the thread flanks. Made in Japan, this insert is the professional choice for precision machining in stainless steel, carbon steel, and high-strength alloys.

Technical Designation Breakdown

16
Size (IC)
E
External
R
Right Hand
1.5
Pitch (mm)
ISO
Metric
B
Chipbreaker

Technical Specifications: Metric vs. Imperial

Technical Feature Metric (ISO) Imperial (TPI)
Thread Pitch 1.5 mm 16.93 Threads Per Inch
Inscribed Circle (IC) 9.525 mm 3/8 inch
Standard Fastener M10 x 1.5 Coarse Common 16-18 TPI range

Pitch Selection Guidance: The 1.5ISO is a Full Profile insert. This ensures the tool forms the complete 60° thread—cutting the crest and root simultaneously. This is critical for external threading as it guarantees exact minor and major diameters, ensuring perfect interchangeability for M10 fasteners without extra deburring steps.

Material: AH725 PVD High-Grade Carbide

The AH725 grade is Tungaloy's premium choice for stainless steel turning and threading. It features a micro-grain substrate that resists edge chipping, paired with a nano-multilayered PVD coating. This long-tail keywords industry favorite ensures stable tool life and exceptional surface quality even in interrupted cuts or hardened materials.

-B Geometry: Advanced Chip Control (槽型)

External threading often suffers from "bird-nesting" chips that wrap around the workpiece. The -B chipbreaker geometry is engineered to curl chips tightly, breaking them into manageable lengths that fall away from the tool post. This protects the workpiece finish and allows for unmanned CNC machining cycles.

Recommended Cutting Parameters

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

  • Cutting Speed (Vc): 90 - 170 m/min (295 - 560 SFM)
  • Total Radial Depth: 0.92 mm
  • Number of Passes: 8 - 14 passes

*Pro Tip: For 1.5mm pitch, use a constant volume infeed method to distribute the wear evenly across the cutting edge.*

Global Verified Reviews

⭐⭐⭐⭐⭐ "Standard for M10 production" - Hans R., Germany
"Consistent 1.5mm pitch. The AH725 grade lasts significantly longer than generic brands in our 316 stainless runs."

⭐⭐⭐⭐⭐ "Excellent edge toughness" - Hiroshi S., Japan
"Very stable results on alloy steel. The surface finish is mirror-like. Original Tungaloy quality is unmatched."

⭐⭐⭐⭐ "Chips break beautifully" - Mark D., USA
"The -B chipbreaker really helps in external work. No more stopping the lathe to clear bird-nests."

⭐⭐⭐⭐⭐ "Best value for precision" - Luca G., Italy
"Flawless thread flanks. Fast delivery and authentic packaging. Highly recommended for CNC shops."

⭐⭐⭐⭐⭐ "Reliable and durable" - Sarah W., UK
"Consistently perfect M10 threads. Fits our SER2020K16 holders perfectly with zero vibration."

Technical Q&A

Q: Which tool holder does this insert fit?

A: It fits all standard **SER** external threading holders with a size 16 pocket (3/8" IC), such as the **SER2020K16**.

Q: Can I use this for internal threads?

A: No. This is an **ER** (External Right) insert. For internal threading, you must use the **IR** series.

Q: Is AH725 good for Titanium?

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

Expert Machining Tip: Grade Selection

For external threading, PVD grades like **AH725** are superior to CVD because they maintain a sharper edge profile. This prevents thread "tearing" in gummy materials, leading to superior accuracy and significantly longer tool life.

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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.