ZCC.CT DNMG150404-15 YBC251 Carbide Turning Inserts for Steel
Price shown is a starting point. Contact us for a precise quote based on your requirements.
DNMG150604-15 YBC251 Turning Inserts for Steel
Product Overview
The DNMG150604-15 YBC251 is a highly versatile 55° rhombic negative insert engineered for Steel (P-Class) machining. Utilizing the YBC251 Grade—a balanced combination of high toughness and wear resistance through advanced CVD coating—this insert is the "workhorse" for P20–P35 materials. The -15 chipbreaker is specialized for medium-duty applications, providing excellent chip control at higher feed rates and ensuring smooth chip evacuation in long-run production.
Key Performance Advantages
- ✔ YBC251 Black Diamond Coating: A combination of thick Al2O3 and TiN layers provides exceptional thermal barriers and reduces friction.
- ✔ -15 Geometry: Optimized rake and clearance angles designed to handle depth of cuts between 1.0mm and 4.0mm with ease.
- ✔ Wide Versatility: Excels in carbon steel, alloy steel, and mild steel, handling both continuous and interrupted cuts.
- ✔ 6.35mm Thickness (06): Enhanced insert thickness provides superior heat dissipation and mechanical strength over standard 4.76mm (04) variants.
ISO Nomenclature & Dimensional Comparison
55° Rhombic
0° Relief
Tolerance M
Pin Hole
15.5mm Edge
6.35mm Thick
0.4mm Radius
| Standard | Designation | Thickness (S) |
|---|---|---|
| Metric (ISO) | DNMG150604-15 | 6.35 mm |
| Inch (ANSI) | DNMG 441-15 | 1/4" (0.250") |
Recommended Cutting Data
| Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|
| 150 - 380 m/min | 0.15 - 0.50 mm/rev |
Primary Applications
- Carbon Steel (S45C, 1045)
- Alloy Steel (4140, 4340, Cr-Mo)
- Medium-duty semi-finishing
- Industrial shafts, hubs, and large flanges
Compatibility
- Universal ISO holders (DNMG 1506 series)
- CNC Lathes and turning centers
- Rigid machine setups preferred
ZCC.CT Grade Strategy Matrix
| Grade | Cutting Speed | Toughness |
|---|---|---|
| YBC151 | High (Continuous) | Moderate |
| YBC251 (Current) | Medium (Balanced) | Excellent |
| YBC351 | Low (Roughing) | Maximum |
Why Engineers Trust ZCC.CT
ZCC.CT is a global leader in tungsten carbide production. Our YBC "Black Diamond" series represents the peak of CVD coating performance, reducing tool change frequency by up to 30% compared to standard ISO inserts.
⭐⭐⭐⭐⭐
"Excellent versatility"
The 15 breaker works great on 4140. Chips are broken perfectly.
— Mike S., USA 🇺🇸⭐⭐⭐⭐⭐
"Zuverlässige Qualität"
Consistent life across thousands of parts. Best price for YBC251.
— Hans W., Germany 🇩🇪⭐⭐⭐⭐
"Strong thickness"
The 06 thickness makes a difference in heat stability.
— Sato T., Japan 🇯🇵⭐⭐⭐⭐⭐
"Top performance"
Fast delivery and original ZCC quality. Very happy.
— Fabio L., Italy 🇮🇹Frequently Asked Questions
Q: What is the difference between DNMG1504 and DNMG1506?
A: The "06" refers to the thickness (6.35mm), while "04" is 4.76mm. The 1506 variant is much stronger and resists heat better in heavy cuts.
Q: Can I use this for Stainless Steel?
A: YBC251 is a P-Class (Steel) grade. While it can cut some ferritic stainless, the YBM series is recommended for Austenitic (304/316) grades.
Q: Is this insert double-sided?
A: Yes, DNMG is a negative geometry insert with 4 usable cutting edges.
Material Comparison Tip: When machining Standard Carbon Steel at moderate speeds, YBC251 is the safest and most economical choice. If your priority is absolute speed on rigid machines, consider YBC151.
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.