ZCC.CT SNMG190612 YBC251 Carbide Turning Inserts for Steel Machining
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ZCC.CT SNMG190616 YBC251 Turning Insert
Premium Industrial CVD Coated Carbide for High-Efficiency Steel Roughing
Product Overview
"Which CNC insert is most durable for heavy roughing of alloy steel with stable chip control and high feed rates?"
The ZCC.CT SNMG190616 YBC251 is a robust industrial solution engineered for the high-demand world of steel turning (ISO P). Utilizing the YBC251 grade—a multi-layer CVD coating (TiCN + Thick Al2O3)—this insert provides an exceptional balance between wear resistance and edge toughness. With a 1.6mm (R1.6) corner radius, it is specifically designed for heavy-duty roughing operations where edge strength is paramount to prevent chipping during high-depth-of-cut machining.
Key Performance Advantages
Technical Specifications
Square
0° Relief
Tolerance
Hole/Chip
19.05mm
6.35mm
1.6 Radius
| Standard | Metric Designation | Imperial Designation |
|---|---|---|
| ISO / ANSI | SNMG190616 | SNMG644 |
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc m/min) | Feed Rate (fn mm/rev) |
|---|---|---|
| Carbon Steel / Alloy Steel | 120 - 280 | 0.30 - 0.70 |
| Steel Castings | 100 - 220 | 0.25 - 0.65 |
Compatible Tool Holders (SNMG 1906 Series):
Industrial Applications
- Heavy Roughing: Ideal for large components requiring high depth of cut.
- Interrupted Machining: High-toughness substrate handles impacts on welded or irregular surfaces.
- Steel Alloys: Exceptional in 4140, 1045, and 8620 steel types.
System Compatibility
Precision-ground to fit all standard ISO pocket tool holders. Designed for high-stability lathes and CNC centers with high rigidity to support the 1.6mm corner radius forces.
ZCC.CT Turning Grade Matrix
| Grade | Substrate Type | Application Focus |
|---|---|---|
| YBC152 | CVD | Finishing - High Speed |
| YBC251 | CVD | Universal - Medium/Roughing |
| YBC351 | CVD | Heavy Interrupted Cuts |
Verified Customer Feedback
"Massive Productivity Boost"
Replaced our standard 0.8mm inserts with these 1.6mm SNMGs. We increased our feed rate by 50% without any edge failure in cast steel.
— Gary M., USA 🇺🇸"Perfekt für schwere Bearbeitung"
Die YBC251 Beschichtung hält sehr lange bei hohen Temperaturen. Sehr stabil bei großen Schnitttiefen.
— Dieter K., Germany 🇩🇪"Ottima qualità"
Inserti professionali per asportazione pesante. Il raggio 1.6 è fantastico per sgrossatura.
— Alessandro V., Italy 🇮🇹Expert Industrial FAQ
Q: Is YBC251 better than YBC351 for heavy roughing?
A: YBC251 offers higher wear resistance at higher speeds. For severe interrupted cuts or low-speed impact roughing, YBC351 is tougher, but YBC251 is the better universal choice for high productivity.
Q: Why choose a 1.6mm radius over a 0.8mm?
A: The 1.6mm radius significantly increases edge strength and allows for a higher feed rate per revolution while maintaining better heat dissipation in the corner.
Q: Can I use this for stainless steel?
A: While optimized for ISO P (Steel), YBC251 can machine martensitic stainless steel. For austenitic stainless (304/316), the ZCC.CT YBM series is highly recommended.
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.