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

Tungaloy SEEN1203AFTNCR-14 NS740 Cermet Milling Insert for Steel Finishing

$59.69 USD

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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

How do I choose the correct specification?

When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.

How can I check compatibility with my existing setup?

For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.

What quantity and price unit am I ordering?

Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.

How should I choose cutting parameters?

Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.

Are bulk discounts available?

Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.

When will my order ship and arrive?

According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.