ZCC.CT TCMT110204-52 YBC251 Carbide Turning Inserts for Steel Finishing
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ZCC.CT TCMT110204-52 YBC251 Turning Insert
Industrial-Grade CVD Coated Carbide for Precision Steel Machining
Product Overview
"Which carbide insert grade is best for finishing steel with high wear resistance and excellent surface quality?"
The ZCC.CT TCMT110204-52 YBC251 is a high-performance triangular turning insert engineered for ISO P (Steel) applications. Combining a thick Al2O3 CVD coating with a high-strength substrate, the YBC251 grade offers an optimal balance of toughness and wear resistance. The -52 chipbreaker is specifically designed for finishing, featuring a sharp cutting edge and specialized geometry to ensure smooth chip evacuation and a mirror-like finish on carbon and alloy steels.
Key Technical Advantages
Technical Specifications
ISO Model Decoding
Triangular
7° Relief
Tolerance
Hole/Slot
11mm Edge
2.38mm Thk
0.4mm Rad
| Feature | Metric (ISO) | Imperial (ANSI) |
|---|---|---|
| Model Number | TCMT110204 | TCMT21.51 |
| Inscribed Circle | 6.35 mm | 0.250 inch |
Cutting Parameters Recommendations
| Steel Grade | Speed (Vc m/min) | Feed (f mm/rev) |
|---|---|---|
| Low Carbon Steel | 220 - 380 | 0.05 - 0.20 |
| Alloy Steel | 150 - 300 | 0.08 - 0.15 |
Compatible Tool Holders (Boring Bars):
Applications
- Internal Boring: Ideal for precision boring in steel parts.
- External Turning: High-efficiency finishing for shafts and valves.
- Finishing Stage: Best for depth of cuts between 0.2mm to 1.5mm.
Equipment Compatibility
Optimized for CNC lathes and high-stability boring operations. Fits all standard ISO STGCR/L tool holders with 1102 (21.5) pocket dimensions.
ZCC.CT Steel Grade Comparison
| Grade | Coating | Application |
|---|---|---|
| YBC251 (Current) | CVD | Versatile / Finishing |
| YBC151 | CVD | High-Speed Finishing |
| YBC351 | CVD | Roughing / Interruption |
Global Machinist Reviews
"Excellent Surface Finish"
Using YBC251 on 4140 steel. The -52 chipbreaker really handles stringy chips well. Surface is mirror-like.
— Mark R., USA 🇺🇸"Top-Qualität"
Sehr gute Standzeit bei der Bearbeitung von Baustahl. ZCC.CT ist immer zuverlässig.
— Hans W., Germany 🇩🇪"Ottimo Prezzo"
Rapporto qualità-prezzo imbattibile. Spedizione veloce.
— Luca M., Italy 🇮🇹Product FAQ
Q: Is YBC251 suitable for stainless steel?
A: While it can handle some ferritic stainless, we recommend the YBM series for austenitic stainless (304/316) for optimal tool life.
Q: What is the benefit of the -52 chipbreaker?
A: It is designed with a sharp edge and a wide chip pocket, making it ideal for low-feed finishing where chip control is usually difficult.
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.