ZCC.CT APKT11T308-PM YBD252 Carbide Insert – 11mm Milling R0.8 Cast Iron Heavy Cut
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APKT11T308-PM YBD252 ZCC.CT Milling Insert
High-Performance Black Diamond Grade for ISO K Cast Iron Milling
Product Overview
"Looking for a reliable insert that masters high-speed milling in abrasive cast iron without early edge wear?"
The APKT11T308-PM YBD252 is a cornerstone for ISO K (Cast Iron) applications. Featuring the PM (General Purpose) geometry, it balances sharpness with structural integrity. Its defining power comes from the YBD252 "Black Diamond" Grade—a specialized CVD coating with a smooth finish that resists the abrasive nature of cast iron. Whether you are machining Gray Cast Iron (GG) or Ductile Cast Iron (GGG), this insert provides the thermal stability and flank wear resistance required for long production runs.
Model Code Interpretation
90° Parallelogram
11° Clearance Angle
Hole & Chipbreaker
Size (11mm)
Thickness (3.97mm)
Radius (0.8mm)
General Purpose
Product Core Advantages
- Black Diamond YBD252 Grade: Extreme hardness for high-speed cutting in ISO K materials.
- Optimized Flank Wear Resistance: Prevents the typical rapid erosion seen in abrasive cast iron.
- Balanced PM Geometry: Provides low cutting forces and excellent surface finish across various cast iron types.
- Stable Thick CVD Coating: Engineered to withstand the heat and mechanical stress of intermittent milling.
Application Scenarios
- High-speed milling of automotive engine blocks and cylinder heads.
- Machining of heavy industrial machine bases and housings.
- Shoulder milling in ductile (nodular) iron components.
- Continuous and moderately interrupted cutting in large batch production.
Technical Specifications & Cutting Data
| Metric Model | Inch Equivalent | Cutting Speed (Vc) | Feed per Tooth (fz) |
|---|---|---|---|
| APKT11T308-PM | APKT 0.433" x 0.156" R0.031" | 200 - 450 m/min | 0.15 - 0.35 mm/z |
*Optimized for Gray Iron (GG) and Ductile Iron (GGG).
Compatibility: Matching Tool Holders
Standard APKT 11-size. Designed for ZCC.CT and all standard 90° shoulder milling bodies:
ZCC Grade Selection Logic
- YBD152: Highest speed grade for continuous gray iron milling.
- YBD252 (This Product): Universal choice for all cast irons; excellent toughness.
- YBC302: Tough CVD grade for steel (ISO P) roughing.
Why Trust BEYOND / OYYU?
- ✅ 100% Genuine: Factory-fresh ZCC.CT products with security QR code tracking.
- ✅ Cast Iron Experts: We provide solutions specifically vetted for industrial cast iron applications.
- ✅ Global Industrial Supplier: Over 10 years experience serving the CNC machining industry.
Verified Customer Feedback
"Outstanding life in GG25. The YBD252 grade handles the heat much better than our previous PVD inserts."
Peter H. - Germany"Ottima per ghisa sferoidale. Rapporto qualità-prezzo imbattibile."
Giorgio M. - Italy"Black Diamond inserts are the real deal for cast iron. Highly predictable tool life."
D. Scott - UKTechnical FAQ
While it can physically cut steel, it is not recommended. YBD grades are chemically optimized for Cast Iron. For steel, use YBC or YBG grades for better performance.
Yes. In most cast iron applications, dry milling is preferred to prevent thermal shock and cracking of the insert coating, as cast iron dissipates heat effectively through its chips.
Cast Iron Milling Tip:
When machining gray cast iron with YBD252, you can push the cutting speed significantly higher than in steel. However, when moving to ductile iron (GGG), reduce the speed slightly and monitor the flank for edge chipping, as ductile iron is more prone to mechanical impact.
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.