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.
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.