Tungaloy TCMT090204-24 T9125 Coated Carbide Turning Insert for Steel Machining

$62.26 USD

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Description

Tungaloy TCMT090204-24 T9125 Turning Insert

High-Speed Steel Machining | Premium T9125 CVD Carbide | 0.4mm Radius

Which carbide insert is best for high-speed steel turning?

The Tungaloy TCMT090204-24 T9125 is a high-performance triangular turning insert specifically engineered for ISO P (Steel) applications. Featuring the legendary T9125 CVD coated carbide grade, this insert excels in high-speed continuous cutting and light interrupted machining. The -24 chipbreaker is designed for light-to-medium finishing, offering a perfect balance between sharp cutting action and edge strength. 100% Made in Japan, it provides the reliability needed for precision CNC manufacturing and high-productivity environments.

T9125 Premium Coating

A specialized CVD coating that offers extreme wear resistance and thermal stability. It effectively prevents crater wear and plastic deformation during high-speed steel machining.

-24 High-Precision Breaker

Optimized for finishing to medium cutting. It provides excellent chip control across a wide range of feed rates, reducing the risk of "bird-nesting" on your CNC lathe.

Premium Substrate Integrity

The tough carbide substrate handles heat dissipation efficiently, ensuring dimensional accuracy even during long production cycles in alloy steel.

Decoding TCMT090204-24 Technical Nomenclature

T
Triangular
C
7° Relief
M
Tolerance
T
Hole/Fix
09
9.6mm L
02
2.38mm Thk
04
0.4mm Rad.
-24
Chipbreaker

3. Technical Specifications: Metric vs. Imperial

Parameter Metric (ISO) Imperial Equivalent
Cutting Edge Length (L) 9.6 mm TCMT 1.8(1.5)1
Inscribed Circle (IC) 5.56 mm 7/32"
Thickness (S) 2.38 mm 3/32"
Corner Radius (RE) 0.4 mm 1/64"

Recommended Cutting Parameters (T9125)

  • Cutting Speed (Vc): 100 - 250 m/min
  • Feed Rate (f): 0.05 - 0.25 mm/rev
  • Depth of Cut (ap): 0.2 - 2.5 mm

*Industrial Tip: T9125 is highly resistant to heat. For optimal results in steel, ensure sufficient coolant flow during high-speed operations to flush chips and stabilize the cutting temperature.*

4. Product Applications

  • High-speed turning of mild and carbon steels.
  • Boring operations for internal engine and valve parts.
  • Automotive component mass production.
  • Light interrupted cutting in alloy steel shafts.

5. Tool Compatibility

Designed for all standard Tungaloy / ISO boring bars and external turning tool holders using TCMT 0902 size inserts (5.56mm IC). Compatible with S-STFCR/L series holders.

7. Why Choose CNCHome-Beyond?

Genuine Tungaloy
100% Original Japanese stock
Expert B2B Support
Industrial machining consulting
Global Logistics
Fast shipping for production lines
Proven Supply
Direct sourcing and inventory

Professional Success Stories

⭐⭐⭐⭐⭐ "Excellent Life in 1045 Steel" - Hans G., Germany
"The T9125 grade holds up much better than our previous inserts in high-speed passes. Very consistent dimensional control."

⭐⭐⭐⭐⭐ "Perfect for Production" - Robert T., USA
"Using these for our automotive contract. Fast cycle times and the inserts don't chip. Original Tungaloy quality."

⭐⭐⭐⭐ "Great Chip Breaking" - K. Hiroshi, Japan
"The -24 breaker is very reliable in mild steel. No long stringy chips. Reliable supplier."

⭐⭐⭐⭐⭐ "Fast Shipping to SG" - Wei L., Singapore
"Received original stock within 3 days. The T9125 is my go-to for turning steel gears."

⭐⭐⭐⭐⭐ "Outstanding Finish" - Francesco S., Italy
"Even though it's a rougher grade than cermet, the surface finish is still impressive for a carbide insert. 5 stars."

8. FAQ - Turning Technical Support

Q: Is T9125 better than cermet for steel?

A: T9125 (Carbide) is tougher and handles interrupted cuts better than cermet, though cermet provides a shinier finish at very high speeds.

Q: Can I use this for stainless steel?

A: While it can cut stainless, the T9100 series is optimized for general steel (ISO P). For stainless steel (ISO M), the AH7000 series is recommended.

Q: Does this fit my existing 7/32" boring bar?

A: Yes, TCMT 0902 corresponds to the 5.56mm (7/32") Inscribed Circle, which is standard for small boring bars.

Expert Tip: Carbide vs. Cermet

Choose **T9125 Carbide** when you need a balance of toughness and heat resistance for steel production. If your application requires a mirror-like finish in stable conditions, consider switching to **NS9530 Cermet**. For high-productivity steel turning, **Tungaloy Japan** is the industry standard.

© Technical Data by cnchome-beyond.com - CNC Tool 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.