Tungaloy SEEN1203AFTNCR-14 NS740 Cermet Milling Insert for Steel Finishing - BEYOND
Tungaloy SEEN1203AFTNCR-14 NS740 Cermet Milling Insert for Steel Finishing - BEYOND
Tungaloy SEEN1203AFTNCR-14 NS740 Cermet Milling Insert for Steel Finishing - BEYOND
Tungaloy SEEN1203AFTNCR-14 NS740 Cermet Milling Insert for Steel Finishing - BEYOND

Tungaloy SEEN1203AFTNCR-14 NS740 Cermet Milling Insert for Steel Finishing

$59.69 USD

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

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Description

Tungaloy SEEN1203AFTNCR-14 NS740 Insert

High-Gloss Steel Finishing | NS740 Cermet Grade | Precision Made in Japan

What is the best insert for achieving a mirror finish on steel?

The Tungaloy SEEN1203AFTNCR-14 NS740 is a high-precision square milling insert specifically engineered for finishing operations on ISO P (Steel) materials. Unlike standard carbide, the NS740 Cermet grade offers exceptional chemical stability and resistance to "built-up edge" (BUE), which is essential for achieving a superior, high-gloss surface finish. Made in Japan, this insert features a specialized 14-degree rake angle to ensure smooth chip evacuation and reduced cutting forces during high-speed finishing cycles.

NS740 Cermet Technology

Cermet (Ceramic-Metal) grade provides higher wear resistance and thermal stability than carbide, specifically designed for high-speed finishing of carbon and alloy steels.

-14 High Rake Angle

The positive 14-degree geometry reduces cutting resistance, allowing for vibration-free machining and excellent dimensional accuracy on thin-walled parts.

Mirror-Like Surfaces

The low affinity for steel prevents workpiece material from welding to the insert, resulting in a cleaner cut and a much brighter surface finish.

Decoding SEEN1203AFTNCR-14 Technical Nomenclature

S
Square
E
20° Relief
E
Tolerance
N
Fixing
12
Size 12
03
3.18mm Thick
AF
Facet
NCR
Right Hand
14
14° Rake

3. Technical Specifications: Metric vs. Imperial

Parameter Metric (ISO) Imperial Equivalent
Cutting Edge (L) 12.7 mm 1/2" (SEEN 42)
Thickness (S) 3.18 mm 1/8"
Wiper Dimension 1.4 mm 0.055"
Standard Grade NS740 (Cermet) Steel Grade Cermet

Recommended Cutting Parameters (NS740 Cermet)

  • Cutting Speed (Vc): 150 - 350 m/min (Ideally dry machining)
  • Feed per Tooth (fz): 0.10 - 0.20 mm/t
  • Depth of Cut (Ap): 0.1 - 1.0 mm (Finishing range)

*Note: Cermets perform best at high speeds. Avoid using heavy coolant to prevent thermal cracking.*

4. Product Applications

  • Fine finishing of low and medium carbon steel.
  • Final surface machining of alloy steel components.
  • Production of mold and die plates requiring high gloss.
  • High-speed finishing for automotive valve parts.

5. Tool Compatibility

Compatible with Tungaloy Face Mills designed for SEEN 1203 size inserts (e.g., TPS11 or similar series). Fits all standard high-speed milling spindle configurations.

7. Why Choose CNCHome-Beyond?

Genuine Tungaloy
100% Original Japanese Stock
Machining Experts
Optimized Parameter Support
Industrial B2B
Global OEM Supplier
Fast Worldwide
Express Logistics & Tracking

Professional Machinist Feedback

⭐⭐⭐⭐⭐ "Mirror Finish" - Robert H., USA
"Switched from carbide to this NS740 cermet for finishing steel plates. The difference is night and day. Mirror finish every time."

⭐⭐⭐⭐⭐ "High Speed Stability" - B. Schneider, Germany
"We run these at 300 m/min dry. No built-up edge and the insert life is incredibly stable. Tungaloy Japan at its best."

⭐⭐⭐⭐ "Very Precise" - T. Sato, Japan
"Used for fine finishing of gear box housings. The dimensional control is excellent over a long batch."

⭐⭐⭐⭐⭐ "Great for B2B" - F. Bianchi, Italy
"Original packaging, original quality. CNCHome-Beyond is our go-to for Japanese cermets."

⭐⭐⭐⭐⭐ "Smooth Cuts" - S. Lim, Singapore
"The 14-degree rake really makes a difference on our older milling machines. Cuts much smoother with less noise."

8. FAQ - Finishing Center

Q: Should I use coolant with NS740 Cermet?

A: For cermets, dry machining with an air blow is generally recommended to prevent thermal shock and edge chipping.

Q: What is the maximum depth of cut?

A: This is a finishing insert. For best surface quality, keep the depth of cut (Ap) below 1.0mm.

Q: Does this fit SEEN 42 tool holders?

A: Yes, SEEN 1203 is the ISO metric size equivalent to the Imperial SEEN 42 size.

Expert Insight: Cermet vs. Carbide

While carbide is known for toughness, NS740 Cermet is the king of finish. Because cermet has a low chemical affinity for steel, it eliminates "smearing" and creates a sharp, bright surface. When your job requires a decorative or high-precision finish on steel components, SEEN1203AFTNCR-14 is the industrial professional's choice. Experience Japanese precision.

© Technical Content by cnchome-beyond.com - CNC Industrial 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.