ZCC.CT DNMG150612-15 YBC251 Carbide Turning Inserts for Steel
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DNMG150612-15 YBC251 Heavy-Duty Steel Turning Inserts
Product Overview
The DNMG150612-15 YBC251 is a high-toughness carbide insert engineered for the Steel (P-Class) application range. The YBC251 grade—featuring a thick Al2O3 CVD coating—is the "Workhorse" of the ZCC.CT line, balancing wear resistance and impact toughness. Combined with the -15 geometry (designed for roughing and heavy-duty machining), this insert excels in high-feed environments and handles interrupted cuts with ease.
Core Technical Advantages
- ✅ YBC251 Versatile Grade: Ideal for P20–P35 steel applications, providing stable performance in semi-finishing to roughing.
- ✅ -15 Chipbreaker: Specifically designed with a wide chip pocket for high-feed roughing, effectively controlling chips at large depths of cut.
- ✅ 1.2mm Nose Radius: Provides maximum edge strength (R1.2) to withstand heavy mechanical loads and high-temperature stress.
- ✅ CVD Multi-Layer Coating: Offers superior thermal protection for the carbide substrate during long-cycle continuous cutting.
Technical Specifications
55° Shape
0° Relief
Tolerance
Pin/Hole
15.5mm L
6.35mm S
1.2mm R
| Unit System | Model Reference | Nose Radius |
|---|---|---|
| Metric (ISO) | DNMG150612-15 | 1.2 mm |
| Inch (ANSI) | DNMG 443-15 | 0.0472" |
Recommended Cutting Parameters (Steel)
| Workpiece (P) | Speed (Vc) | Feed (fn) |
|---|---|---|
| Carbon/Alloy Steel | 180 - 350 m/min | 0.25 - 0.65 mm/rev |
Primary Applications
- Medium to Large Batch Steel Production
- Heavy Roughing of Carbon Steel (S45C/1045)
- Alloy Steel Machining (4140/SCM440)
- Interrupted Cutting and Casting Skin Removal
Machine Compatibility
- High-Rigidity CNC Lathes
- Heavy-Duty Manual Lathes
- Standard ISO DNMG Tool Holders
ZCC.CT Grade Strategy for Steel (P)
| Grade | Focus | Cutting Condition |
|---|---|---|
| YBC151 | Finishing | Stable / High Speed |
| YBC251 (Current) | General Purpose | Versatile / Most Reliable |
| YBC351 | Roughing | Heavy Interrupted / Low Speed |
Customer Success Stories
⭐⭐⭐⭐⭐
"Excellent edge life for roughing 4140. The 1.2mm radius holds up perfectly under heavy load."
— Thomas J., USA 🇺🇸⭐⭐⭐⭐⭐
"Der Spanbruch ist bei hohem Vorschub fantastisch. YBC251 ist sehr zuverlässig."
— Hans W., Germany 🇩🇪⭐⭐⭐⭐
"Solid performance on interrupted cuts. Best value for money compared to Japanese brands."
— Marco V., Italy 🇮🇹⭐⭐⭐⭐⭐
"Great tool life on our CNC machines. We use these for almost all our carbon steel jobs."
— Kenji A., Japan 🇯🇵Frequently Asked Questions
Q: Is YBC251 suitable for dry machining?
A: While CVD coatings handle heat well, we recommend using coolant for steel roughing to improve chip evacuation and surface quality.
Q: What is the main advantage of the -15 chipbreaker?
A: It is designed for rough machining (P2-P3). It provides a strong cutting edge and excellent chip control at higher feeds and depths of cut.
Q: Why choose the 1.2mm radius (12) over 0.8mm (08)?
A: The 1.2mm radius significantly increases edge strength for roughing, though it requires a more rigid machine to avoid vibration.
Industrial Insight: YBC251 is the ultimate general-purpose grade. If you face heavy vibrations, ensure your tool overhang is minimized. For precision finishing after roughing with this insert, consider moving to the YBC151 grade.
Need Help With ZCC.CT Inserts?
Looking for a ZCC.CT equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This ZCC.CT insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.