Tungaloy TCMT090204-PS AH725 Turning Insert
Precision Steel Machining | High-Performance AH725 PVD Carbide | 0.4mm Radius
What is the best PVD grade for high-precision steel turning?
The Tungaloy TCMT090204-PS AH725 is a premium triangular indexable insert designed for the ultimate precision in ISO P (Steel) and ISO M (Stainless Steel) machining. Featuring the advanced AH725 PVD coated carbide grade, this tool is engineered for exceptional edge sharpness and wear resistance. The -PS chipbreaker is Tungaloy's specialized geometry for finishing operations, providing superior chip control at very light depths of cut. 100% Made in Japan, it is the industrial standard for CNC operators requiring tight tolerances and mirror-like surface finishes.
AH725 PVD Coating
A multi-layered PVD coating that provides high hardness and excellent adhesion. It effectively prevents built-up edge (BUE) and chipping, even during low-speed precision work.
-PS Finishing Breaker
The 'PS' geometry features a sharp cutting edge and wide chip pocket, making it perfect for light cutting depths where other breakers fail to break chips properly.
Japanese Manufacturing
Manufactured with Tungaloy's world-class quality standards in Japan, ensuring consistent performance and dimensional stability across every batch.
Decoding TCMT090204-PS Technical Nomenclature
T
Triangular
C
7° Relief
M
Tolerance
T
Hole/Fix
09
9.6mm L
02
2.38mm Thk
04
0.4mm Rad.
-PS
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 (AH725)
-
Cutting Speed (Vc): 80 - 180 m/min
-
Feed Rate (f): 0.03 - 0.15 mm/rev
-
Depth of Cut (ap): 0.1 - 1.5 mm
*Machinist Advice: AH725 is a high-adhesion PVD grade. When turning small diameters or boring, maintain the recommended feed to utilize the -PS geometry for optimal chip evacuation.*
4. Product Applications
- Precision finishing of alloy and stainless steels.
- Small diameter internal boring operations.
- Swiss-type CNC lathe machining for miniature parts.
- Ideal for applications requiring high surface finish Ra values.
5. Tool Compatibility
Compatible with standard Tungaloy / ISO boring bars and external turning holders using TCMT 0902 size inserts (7/32" Inscribed Circle). Fits S-STFCR/L series holders perfectly.
7. Why Choose CNCHome-Beyond?
Genuine Tungaloy
100% Original Japanese stock
Industrial Support
Professional B2B technical team
Global Logistics
Reliable shipping for factory supply
Direct Sourcing
Stable inventory of premium tools
Professional Success Stories
⭐⭐⭐⭐⭐ "Mirror Finish on 304 Stainless" - Johann B., Germany
"The AH725 grade is incredible for finishing. We used these on 304 stainless shafts and achieved a mirror finish without any edge buildup."
⭐⭐⭐⭐⭐ "Perfect for Small Boring" - David L., USA
"I use these in my 10mm boring bars. The -PS breaker handles the chips perfectly in tight spaces. Quality is definitely original Tungaloy."
⭐⭐⭐⭐ "Great Precision" - T. Sato, Japan
"Very consistent dimensions across the box. AH725 is a very stable grade for our precision Swiss lathe work."
⭐⭐⭐⭐⭐ "Quick Shipping" - Wei K., Singapore
"Exactly what we needed. CNCHome-Beyond delivered original stock very fast. Performance is superior to generic alternatives."
⭐⭐⭐⭐⭐ "Sharpest Edge Available" - Carlos M., Spain
"The PVD coating on these is so much better for fine work than CVD. No chipping on the corners even on light passes."
8. FAQ - Technical Support
Q: Why choose PVD AH725 over CVD grades like T9125?
A: PVD coatings are thinner and allow for a much sharper cutting edge. AH725 is preferred for precision finishing and preventing built-up edges in sticky materials like stainless steel.
Q: What is the primary use of the -PS chipbreaker?
A: The -PS is a specialized "Finishing" breaker. It is designed to provide optimal chip control at very small depths of cut and low feed rates.
Q: Does this fit my existing 7/32" tool holder?
A: Yes, TCMT 0902 represents a 5.56mm (7/32") Inscribed Circle, which is the international standard for this size of triangular insert.
Expert Tip: PVD vs. CVD Coating
Choose **PVD AH725** for high-precision finishing and stainless steel applications where edge sharpness is critical. For high-speed, heavy-duty carbon steel turning, a **CVD grade** like T9125 would be more suitable. For precision machining, **Tungaloy Japan** is the professional choice.
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