ZCC.CT DCMT11T308-HM YBM251 Carbide Turning Inserts for Stainless Steel
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DCMT11T308-HM YBM251 Turning Inserts
Product Overview
The DCMT11T308-HM YBM251 is a high-performance 55° rhombic positive insert specifically engineered for Stainless Steel (M-Class). By utilizing the YBM251 Grade—featuring a specialized CVD coating with superior thermal stability—this insert excels in medium-duty turning (HM). The 0.8mm nose radius provides enhanced edge strength and improved surface finish for parts requiring high durability under continuous cutting conditions.
Key Advantages
- ✔ YBM251 Matrix Technology: A tough substrate with thick Al2O3 CVD coating for M15–M35 applications, offering extreme resistance to plastic deformation.
- ✔ -HM Chipbreaker: Optimized for medium-duty cutting, providing excellent chip breaking even in ductile austenitic stainless steels.
- ✔ Reinforced 0.8mm Radius: Larger nose radius (0.8mm) ensures a stronger cutting edge compared to the 0.4mm version, ideal for higher feed rates.
- ✔ Anti-Notch Wear: Advanced coating technology specifically combats notch wear at the depth-of-cut line.
ISO Code Decoding
55° Rhombic
7° Relief
Tolerance M
With Hole
11.6mm Edge
3.97mm Thick
0.8mm Radius
Technical Specifications
| Standard | Metric (ISO) | Inch (ANSI) |
|---|---|---|
| Designation | DCMT11T308-HM | DCMT 32.52-HM |
| Inscribed Circle | 9.525 mm | 3/8" |
| Thickness | 3.97 mm | 5/32" |
| Nose Radius | 0.8 mm | 0.031" |
Recommended Cutting Data
| Cutting Speed (Vc) | 120 - 240 m/min |
| Feed Rate (fn) | 0.12 - 0.35 mm/rev |
| Depth of Cut (ap) | 0.8 - 3.5 mm |
Matching Tool Holders
Compatible with all standard DCMT 11T3 series holders:
SDJCR/L 1212H11 | SDJCR/L 2020K11 | SDUCR/L 11
Shop Matching Holders →Target Materials
- 304 / 316 Austenitic Stainless Steel
- Duplex Stainless Steel (2205)
- PH Series Stainless (17-4PH)
- High-Temp Alloy (limited applications)
Material Comparison
- YBM251 (Current): First choice for stainless steel semi-finishing.
- YBM151: Better for higher speed finishing.
- YBC251: Universal grade for Steel (P) and Cast Iron (K).
Why Choose ZCC.CT Tools?
ZCC.CT is a global powerhouse in carbide technology. The YBM series is internationally recognized for its stability in difficult-to-machine materials, ensuring your CNC workshop achieves predictable tool life and high precision without the premium price tag of European brands.
Verified Customer Reviews
⭐⭐⭐⭐⭐
"Excellent Performance in 316L"
The 0.8 radius makes this insert much tougher for interrupted cuts in stainless shafts. Best value for money.
— Brian T., USA⭐⭐⭐⭐⭐
"Top für Edelstahl"
Sehr gute Spanabfuhr. The HM chipbreaker works perfectly with our 304 production runs.
— Markus G., Germany⭐⭐⭐⭐
"Affidabile"
Stable machining and good surface finish. ZCC.CT is always a reliable choice for stainless.
— Luca V., Italy⭐⭐⭐⭐⭐
"鋳物並みの安定性"
Consistent results. The grade YBM251 is very impressive for heat resistance.
— Hiroshi K., JapanFrequently Asked Questions
A: While YBM251 has high thermal stability, we highly recommend using high-pressure coolant for stainless steel to prevent work hardening and improve chip evacuation.
A: -HM (Medium) is for general semi-finishing, while -HF (Finishing) is designed for much lighter depths of cut and lower feed rates.
A: Yes, YBM251 is specifically optimized for the high cutting forces and abrasion found in Duplex grades.
Material Comparison Tip: For high-speed finishing of Austenitic Stainless Steel, YBM251 is the primary choice. If you face heavy intermittent cuts or severe vibration, consider using the YBG205 (PVD) grade for increased edge toughness.
Technical FAQ & Buying Guide
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.
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.
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.
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.
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.
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.