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
