Tungaloy DCMT11T302-PS AH725 Turning Insert
High-Precision PVD Specialist | Premium AH725 Grade | Made in Japan
What is the best insert for high-precision stainless steel finishing?
The Tungaloy DCMT11T302-PS AH725 is a premium PVD coated carbide turning insert engineered for ultra-fine finishing operations. By utilizing the advanced AH725 grade, this insert combines a tough carbide substrate with a high-aluminum content PVD coating, offering incredible resistance to thermal cracking and notch wear. The sharp 0.2mm radius is specifically designed for precision machining where tight tolerances and small internal diameters are required. Featuring the -PS chipbreaker (Polish Style), it maintains stable chip evacuation even at extremely light depths of cut, making it the ultimate CNC machining choice for carbon steel, alloy steel, and stainless steel. This Japan-made indexable turning tool helps eliminate secondary finishing processes, significantly boosting your tool life and production efficiency.
Decoding the DCMT11T302-PS Technical Nomenclature
D
55° Rhombic
C
7° Clearance
M
M-Tolerance
T
Hole & Screw
11
11.6mm Edge
T3
3.97mm Thick
02
0.2mm Radius
-PS
Polish Style
Technical Specs: Metric vs. Imperial Comparison
| ISO Parameter |
Metric Unit |
Imperial Designation |
| ISO Model |
DCMT11T302-PS |
DCMT32.50.5-PS |
| Inscribed Circle (IC) |
9.525 mm |
3/8 inch |
| Thickness (S) |
3.97 mm |
5/32 inch |
| Corner Radius (RE) |
0.2 mm |
0.008 inch |
How does the AH725 grade handle stainless steel?
The AH725 Grade is Tungaloy's answer to the challenges of machining sticky and heat-sensitive materials. Unlike cermet, which can be brittle, AH725 PVD coated carbide has the edge toughness to handle light interruptions and the varying hardness of stainless alloys. The -PS chipbreaker is designed with a sharp cutting edge that reduces cutting force and heat generation, which is essential for maintaining accuracy in precision machining. For long-tail keywords such as "high-precision CNC finishing," this insert is the gold standard for achieving high surface luster without sacrificing tool longevity.
Recommended Cutting Parameters (AH725)
-
Cutting Speed (Vc): 80 - 200 m/min (Stainless) | 100 - 250 m/min (Steel)
-
Feed Rate (f): 0.03 - 0.12 mm/rev
-
Depth of Cut (ap): 0.1 - 1.2 mm
*Optimization Tip: Use high-pressure coolant if possible to assist with chip removal when using the 0.2mm radius.*
Verified Customer Feedback
⭐⭐⭐⭐⭐ "Incredible Precision" - James W., USA
"The 0.2mm radius is perfect for my small medical parts. Finish on 316 stainless is flawless. Tungaloy Japan quality never fails."
⭐⭐⭐⭐⭐ "Tough Coating" - Lars H., Germany
"AH725 is my go-to for mixed production. It handles stainless just as well as carbon steel. Tool life is very predictable."
⭐⭐⭐⭐ "Great Chip Control" - Sato K., Japan
"The PS breaker is excellent for light finishing. Even at very low feeds, the chips break well. Very satisfied."
⭐⭐⭐⭐⭐ "Superior Finish" - Alessandro R., Italy
"Achieved a beautiful Ra finish on alloy steel. The PVD coating resists heat much better than my previous inserts."
⭐⭐⭐⭐⭐ "Reliable and Fast" - Sarah B., UK
"Original Tungaloy stock. Fast delivery and the performance in our CNC shop has been top-tier. Highly recommended."
Technical Tooling Q&A
Q: Can I use this for roughing stainless steel?
A: No. The DCMT11T302-PS is a dedicated finishing insert. The 0.2mm radius is too delicate for roughing. For heavier cuts, use a 0.8mm radius with a roughing geometry.
Q: Is AH725 suitable for dry machining?
A: While it can handle dry cuts in steel, we strongly recommend coolant for stainless steel to prevent work hardening and to maximize the life of the PVD coating.
Q: Which tool holders fit this DCMT 11T3?
A: This fits all standard ISO holders like SDJCR/L 1212 or 1616, and internal boring bars like S...-SDUCR11.
Expert Tip: PVD Carbide for Stainless Steel
For precision machining in stainless alloys, PVD Coated Carbide (AH725) is superior to cermet because it offers the high fracture toughness needed to withstand the cutting forces of tougher materials while maintaining a sharp edge.
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