ZCC.CT SNMG190612-DM YBM251 Carbide Turning Inserts for Stainless Steel
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ZCC.CT SNMG190612-DM YBM251 Turning Insert
The Industrial Benchmark for High-Efficiency Stainless Steel Machining
Product Overview
"Which CNC insert provides the most stable performance and longest tool life when semi-finishing 304 or 316 stainless steel?"
The ZCC.CT SNMG190612-DM in YBM251 grade is a specialized industrial cutting tool engineered for the challenging demands of ISO M (Stainless Steel) and ISO S (Heat Resistant Alloys). Featuring the DM chipbreaker, this insert is specifically designed for stable semi-finishing, providing excellent chip control and preventing built-up edge (BUE) on gummy materials. The YBM251 grade utilizes a unique CVD coating technology that balances edge toughness with extreme thermal wear resistance.
Core Performance Advantages
Optimized for semi-finishing with a positive rake angle that reduces cutting forces and ensures smooth chip evacuation.
Combines a high-toughness substrate with an advanced multi-layer coating to resist crater wear and thermal cracking.
Engineered specifically to minimize work hardening and BUE in 300-series and 400-series stainless steels.
Technical Specifications
Square
0° Relief
Tolerance
Hole/Chip
19.05mm
6.35mm
1.2mm Rad
Chipbreaker
| Feature | Metric (ISO) | Imperial (ANSI) |
|---|---|---|
| Full Designation | SNMG190612-DM | SNMG643-DM |
| Inscribed Circle (IC) | 19.05 mm | 0.75 inch |
| Corner Radius | 1.2 mm | 0.047 inch |
Recommended Cutting Parameters
| Material (Stainless) | Cutting Speed (Vc m/min) | Feed Rate (fn mm/rev) | Depth of Cut (ap mm) |
|---|---|---|---|
| Austenitic (304/316) | 140 - 240 | 0.15 - 0.50 | 1.0 - 5.0 |
| Martensitic / Ferritic | 160 - 260 | 0.15 - 0.45 | 1.0 - 4.5 |
Primary Applications
- Material Focus: All series of Stainless Steel (Austenitic, Duplex, Martensitic).
- Operation: Semi-finishing to light roughing.
- Condition: Continuous and slightly interrupted cutting.
Machine Compatibility
Fits all standard ISO turning holders with a 19.05mm IC pocket. Engineered for high-stability performance on heavy-duty CNC lathes and multitasking machining centers.
ZCC.CT Stainless Machining Grades
| Grade | Application Range | Primary Feature |
|---|---|---|
| YBM151 | High Speed / Finishing | Highest wear resistance. |
| YBM251 (Current) | General Purpose | Balanced toughness & speed. |
| YBM351 | Heavy Interruption | Maximum impact strength. |
Global Professional Feedback
"Excellent for 316 Stainless"
We moved from a premium German brand to ZCC.CT YBM251. The DM chipbreaker works perfectly on 316 shafts. No more tangled chips!
— Robert D., USA 🇺🇸"Top Preis-Leistung"
Sehr gute Standzeit bei hohen Schnittgeschwindigkeiten. Klare Empfehlung.
— Hans W., Germany 🇩🇪"Affidabile e Costante"
Lavoriamo inox tutto il giorno, questo inserto non delude mai.
— Paolo F., Italy 🇮🇹Expert FAQ
Q: Is the YBM251 grade better than the YBC series for stainless?
A: Yes. The YBM series is specifically engineered for ISO M materials. It has higher thermal conductivity and a coating that prevents the workpiece from sticking to the tool edge.
Q: What is the benefit of the DM chipbreaker?
A: The DM geometry is a "double-sided medium" chipbreaker. It provides a wide application range for semi-finishing, offering excellent control even when feed rates vary.
Q: Can I use this for dry cutting?
A: For stainless steel, we always recommend high-pressure coolant to prevent work hardening, though the YBM251 coating is designed to handle high heat.
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.